Date   

Activity List for the UK Microwave Group 5.7GHz and 10GHz Contests - Sunday 26th September

John Quarmby
 

The final session of this years UK Microwave Group 5.7GHz and 10GHz contests takes place this Sunday, 26th September. Entrants can operate for up to 8 hours between 0600 - 1800 GMT (0700 - 1900 BST).

Full rules are here: https://www.microwavers.org/files/2021-mwrules.pdf

As is customary I will post an activity list on Saturday based on your inputs, please use the usual format:

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
             10GHz  10W 60cm dish
Talkback: ON4KST, 144.390MHz, Zello SHF Chat
Times: Various throughout

73

John G3XDY
UKuG Contest Manager


--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


Scatterpoint Activity column

g4bao
 

Hi All
It's time for me to write the activity section of Scatterpoint again, so if you have anything interesting (or even dull!) to report, please send it to me john@....

Details of tests, QSOs "What I've been making" all accepted. by Tuesday PM if poss.

Larger contributions and articles to Roger G8CUB editor@... please 

73

John
G4BAO


Re: How to decode JT4G #10ghz

Maarten PA0MHE
 

Finally my first ever JT4G decode:


Only 170Km but often relative weak here at my location ?

Still I consider the PI4 SW of from Bo OZ2M, much easier for beacon spotting, unfortunate no JT4G decode.

Thanks all, Maarten PA0MHE


Re: How to decode JT4G #10ghz

Maarten PA0MHE
 

Thanks

On Sat, Sep 18, 2021 at 10:44 AM Jeremy Harmer via groups.io <m6igp=icloud.com@groups.io> wrote:
You need to check  ‘Enable VHF and submode features’ under Settings (File -> Settings)

Jeremy
M0RVB


> On 18 Sep 2021, at 09:41, Maarten PA0MHE <maarten.heuvelman@...> wrote:
>
> I can receive GB3PKT again, but again fighting with WSJT-X to decode JT4 submode G; I don't find the submenu ???
> <dummyfile.0.part>
>
>
> Any idea ?
>







Re: How to decode JT4G #10ghz

Andy G4JNT
 

It's all described in the manual
File - Settings - then under 'Behavior', tick the box "Enable VHF and submode features"



On Sat, 18 Sept 2021 at 09:41, Maarten PA0MHE <maarten.heuvelman@...> wrote:
I can receive GB3PKT again, but again fighting with WSJT-X to decode JT4 submode G; I don't find the submenu ???



Any idea ?


Re: How to decode JT4G #10ghz

Jeremy Harmer
 

You need to check ‘Enable VHF and submode features’ under Settings (File -> Settings)

Jeremy
M0RVB

On 18 Sep 2021, at 09:41, Maarten PA0MHE <maarten.heuvelman@gmail.com> wrote:

I can receive GB3PKT again, but again fighting with WSJT-X to decode JT4 submode G; I don't find the submenu ???
<dummyfile.0.part>


Any idea ?


Re: How to decode JT4G #10ghz

Maarten PA0MHE
 

I can receive GB3PKT again, but again fighting with WSJT-X to decode JT4 submode G; I don't find the submenu ???



Any idea ?


Re: ATC Capacitors

g4bao
 

Had a further dig round the AVX site and all the ATC series caps are there for sample request. Not tried it yet but good to know

https://www.avx.com/products/rfmicrowave/capacitors/

73
John


Re: ATC Capacitors

Andy G4JNT
 

Might try that for stocking the junk box 

On Fri, 17 Sep 2021 at 14:58, g4bao <john@...> wrote:
Just had a look on the AVX website and they still have the Sample option on there!

--
Andy (out keeping fit)


Re: ATC Capacitors

g4bao
 

Just had a look on the AVX website and they still have the Sample option on there!


Keyer Boards - Curious

Andy G4JNT
 
Edited

 

 


There was a considerable flurry of interest when these first appeared around the beginning of the year and over half the PCBs + PICs went within a few days, then it went quiet and I thought the market had been saturated.
But there's been a sudden input of a few requests within the last couple of days - one from SV land
What prompted the sudden interest again?
 
Still have 24 PCBs left out of the originalorder of 100
 
Andy
 


Re: ATC Capacitors

Andy G4JNT
 

EXCELLENT Service from Enigma Components
Ordered a few ATC caps yesterday.
They've just arrived
Simple painless ordering too - no obligation to create a user name / password, which I hate when it's insisted-upon; you can order as 'guest'



On Mon, 13 Sept 2021 at 15:17, Andy Talbot <andy.g4jnt@...> wrote:
Thanks for all the replies, and the offers.  Don't need freebies, the finance is there to pay for them so hang on to yours until a more worthy request comes along :-)
Enigma seem to be the company to go to - I need a few values in the 33, 36 and 47pF region, preferring to use parallel combinations,  along with a handful at 4.7pF for fine trimming.

Worth seeing what they have on free offer, but at £2 ish per cap it's not too outrageous.   I thought they'd be more than that.
 


On Mon, 13 Sept 2021 at 14:27, Paul Randall G3NJV <paulfrandall@...> wrote:
Do you know what values you need? I have a few here. 
Paul






-------- Original message --------
From: Andy G4JNT <andy.g4jnt@...>
Date: 13/09/2021 08:13 (GMT+00:00)
To: "UK Microwaves groups.io" <ukmicrowaves@groups.io>
Subject: [UKMicrowaves] ATC Capacitors

I'm after some ATC capacitors for use in high(ish) power filters. 
Is there a UK based source - or at least one that doesn't give all sorts of complicated and expensive import issues?

And doesn't supply  Chinese clones or fakes
 


Re: Something different ...

Steve - WB0DBS
 

I watched that same one I think, but decided I already had one that was destined to become parts. 
I wonder if it was on the US ITAR list at the time?
If anyone is interested in the manual or any of the preamps or filters I think we could work something out. 

Steve
WB0DBS



On Sep 16, 2021, at 3:17 PM, Gedas <w8bya@...> wrote:



duhhh.....gosh now there was a Freudian slip ! NTR-5100 LOL....yes the NTR-51.

Do you know that 4-5 years ago I saw one of these listed on e-bay from a liquidator who did not know what it was and was asking $150 plus $80 shipping ! I was real close to getting it but then I have a basement full of WJ receivers. I had the sad task of getting rid of dozens of old RS-125 systems and many standalone rigs from what used to be ARC (Atlantic Research Corp). An entire U-haul filled with goodies. It would make you vomit if I told you what the highest bid for the whole lot went for :-(

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 2:29 PM, Steve - WB0DBS wrote:
This thread prodded me to go look for the remnants of the Tempest test receiver I had. It was an Electro-Metrics NTR-51, 100Hz - 1 GHz. I still have the manual for it:


and I have the preamps and filters in a box of “someday” projects. The spec sheet had a handwritten note that said $30.5k USD and 30 days ARO. 

73,

Steve
WB0DBS



On Sep 16, 2021, at 12:49 PM, Gedas <w8bya@...> wrote:



It may have been an electro-metrics nontunable receiver. They measured about 30" wide by 18" tall and 20" deep and were light sky blue in color. I think a model NTR 5100 or similar. We used them a lot.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 4:35 AM, Jim Mcilroy via groups.io wrote:

Maybe

I looked that manufacturer up, and I'm not sure we had one of those.

Seem to remember the rig was a metallic blue colour and it was an untuned wideband RX

Jim  G4EQX


On 16/09/2021 06:10, Tim Hague M0AFJ via groups.io wrote:
Dynamic Sciences?

Best Regards
Tim Hague


Re: Something different ...

Jim Mcilroy
 

Yes - fairly sure that was the receiver.

Thanks

Jim  G4EQX

On 16/09/2021 19:29, Steve - WB0DBS wrote:
This thread prodded me to go look for the remnants of the Tempest test receiver I had. It was an Electro-Metrics NTR-51, 100Hz - 1 GHz. I still have the manual for it:


and I have the preamps and filters in a box of “someday” projects. The spec sheet had a handwritten note that said $30.5k USD and 30 days ARO. 

73,

Steve
WB0DBS



On Sep 16, 2021, at 12:49 PM, Gedas <w8bya@...> wrote:



It may have been an electro-metrics nontunable receiver. They measured about 30" wide by 18" tall and 20" deep and were light sky blue in color. I think a model NTR 5100 or similar. We used them a lot.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 4:35 AM, Jim Mcilroy via groups.io wrote:

Maybe

I looked that manufacturer up, and I'm not sure we had one of those.

Seem to remember the rig was a metallic blue colour and it was an untuned wideband RX

Jim  G4EQX


On 16/09/2021 06:10, Tim Hague M0AFJ via groups.io wrote:
Dynamic Sciences?

Best Regards
Tim Hague


On 15 Sep 2021, at 18:52, Jim Mcilroy via groups.io <gts53@...> wrote:



Spent many an hour wrestling with a Watkins-Johnson EMC receiver which took up two racks in the last century.

The test facility I worked at did have Tempest gear but I'm struggling to remember the manufacturer.

Different times...

Jim G4EQX


On 15/09/2021 16:51, Steve - WB0DBS wrote:
Somewhere in a box in the cellar I have a bunch of preamps from a Tempest test receiver. I should dig them out and see what sort of NF and gain they had. I seem to remember they needed split supplies. Loads of short BNC coax jumpers to select the combinations of preamps and filters. I thought it was odd to use BNC in that application. 

Steve
WB0DBS



On Sep 15, 2021, at 10:32 AM, Gedas <w8bya@...> wrote:



GM John. Well the work at Patuxent was during a slow period as I was primarily a tempest geek and regular RF engineering was all that was required. When we moved to Indiana and I worked for ITT Aerospace is when things got real interesting and I became an NSA certified tempest engineer. I had the honor to work with many of your countrymen on various programs like Bowman etc and got to know many at GCHQ. To be honest I am glad it is all behind me now. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/15/2021 5:30 AM, John Fell wrote:
Hi Gedas,
FB account of some of your world of work exploits .
Patuxent , now we are back in Clancy Territory and the Hunt for Red October ?
Keep on Uwaving  .

73
John
G0API

On Tue, 14 Sept 2021 at 20:01, Gedas <w8bya@...> wrote:

What a wonderful group you guys are ! To be able to chat about neat stuff like this. All I need now is a tall half & half in my hand. And of course because there are tons of uW related equipment onboard all this is on-topic <g>.

Ok, promise.....so only one more tale since you brought up the "jump jet". In my past life I had designed and was responsible for the testing of a certain "box" which took place at the Patuxent NAS in Maryland. OMG now you talk about an awesome place.

Well anyway I was given access to a Harrier along with a pilot to test out my gadget. He climbed up the right side of the aircraft and waited for me to climb up the ladder on the left side. Now this was several decades ago when I was a petite 6'2" and only 250 pounds. The pilot instructed me how to enter the craft and I had lifted up my leg ready to proceed when I pulled it back and took another good look at the cockpit insides (i.e., how freaking tiny the compartment was). I then looked at my fat assets, then looked at the cockpit again and then while looking at the pilot I said to him (who was just this tiny little dude) "I am sorry but I do not want to break anything inside your cockpit". He laughed and volunteered to run some tests for me as I stood off to the side. It was a wonderful experience getting to run tests on so many different aircraft. You CANNOT imagine what it was like with this Harrier chained down over a huge ground plane with it's engines at 100% while I ran my tests. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 2:30 PM, John Fell wrote:
Such Fun -  they would be shutdown before they started these days ...

On a related note , the chap who did the first successful Vertical take off in/on the Flying Bedstead ( Farnborough ?) that lead to the Harrier , worked for Flight Refuelling after the Military .His Rover 90 had the number plate VIF1 .

Turns out we are staying a mile from Lympstone by the river Exe- saw the Commandos doing square bashing this afternoon - very well turned out chaps.

73
John
G0API


On Tue, 14 Sept 2021 at 19:14, Andy G4JNT <andy.g4jnt@...> wrote:
Round about 1978, the RAF Tested a access to a inner city area, by landing a Harrier at BBC Pebble Mill Studios, Birmingham.   If memory serves correctly, the public access was from the adjacent street perhaps 40m from the landing site with just an open wire fence separating.  But one local resident had a garden that backed onto teh fence more or less at teh landing site, and he allowed a fair few people in to perhaps 15m from the aircraft landing.

One local (an objector)  had a sound level meter and he recorded 120dBa where some of us were standing - that, even then, was acknowledged to be well into danger levels.  I know I had trouble hearing my driving instructor a couple of hours later that afternoon.   The report on the News that night had the picture shimmering from vibration at the thing took off. 



On Tue, 14 Sept 2021 at 18:57, John Fell <john.g0api@...> wrote:
Hi Gedas,
That is what my youngest Grandson would call awesome !
Good to know launching the C/Os boots also occurs in the West .
My nearest loud experience was at a Radio Special Event station held at the Bournemouth UK Airshow , when it was held at the Bournemouth International (Hurn) Airport .Our club G4RFR got invited as a good friend of mine Harry G3AAO was at the time the Airport Director .
We were in a well tied down Marquee just off the main apron when the last Vulcan V Bomber was rotated in front  of us .
The station was on TX at the time and the rig output meter was pinned for what seemed like 2 mins as this Goliath hauled ass with its RR (Olympics ?) seemingly near vertical.
At the same show a couple of Harrier jump Jets  - (same as your Marine Corp use) did a couple of downdraft blips and sent several plastic tables and chairs rapidly along the taxiway .
Argh , talking about some things that are factual for a change - whatever next .
Best 73 OM

John
G0API

On Tue, 14 Sept 2021 at 18:11, Gedas <w8bya@...> wrote:

Hi John.......sorry to beat the "dead horse" but just have to share with you my adventure aboard the USS Truman a decade ago as the crew and family members were treated to a "tiger cruise" once the ship arrived home from a tour in the Gulf. Best damn food I ever had too! We departed Norfolk VA and headed out to sea about 80 miles off the coast where we were all treated to a show of force with live ordinance, supersonic flyby's by F-14 & F-18 and the official decommissioning of the amazing F-14 Tomcat (with the sticky digital fuel displays). That has got to be one of my all time favorite jets.

Anyway spending the entire day literally 25' away from the wingtips of the jets as they took off and landed was something you can never ever fully explain nor forget. A final tribute was given by the Navy ceremony "launching-the-boot" of the F-14 squadron leaders boots off the steam powered catapult off the bow of the ship LOL.....what a sight.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 5:47 AM, John Fell wrote:
Hi Gedas,
Ah ,Top Gun - great Fun. My Grandchildren like the music ....

Funnily enough I used to work for Flight Refuelling Electronics , who were the first company to be licensed to manufacture Reedswitches by Amphenol , over here in UK. ( originally invented for Telephone switching circuits by ATT in the 1940's ) .

Our then main use for Reedswitches was as part of Aircraft fuel level monitoring devices , using permanent magnets within floats to trigger them as the level went up on fill or down in use .Being hermetically glass sealed on manufacture the switch contacts remained at very low resistance during use and were anyway often part of resistive ladder networks .

The relevance to metering was the cockpit analogue meters did often stick and needed the occasional thump with a finger .They could have been fitted to our V Bomber fleet ....
FR is long gone and is now owned by Multinational Eaton Valves in the USA - at least manufacturing is still going on here in UK and Eaton are not a Vampire Hedge fund ...
Best 73
John
G0API


On Mon, 13 Sept 2021 at 21:07, Gedas <w8bya@...> wrote:

One of my favorite parts is in the movie Top Gun when Maverick is running WAY low on fuel as he looks over to his digital fuel meter. It showed only 1-2 bars lit up so he raps on it with his finger tips hoping it would bounce back up like an old stuck analog meter <g>.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/13/2021 3:55 PM, Colin Ranson wrote:

Are they not using a redundant nuclear hunter/killer to film on ? Like the Swiftsure Class ? Can’t imagine even BBC props dept to be making some of that stuff.

 

Been watching it, even if giggling about the round analogue meter in the bit of kit.

 

Colin de G8LBS.

 

Sent from Mail for Windows

 

From: John Fell
Sent: 13 September 2021 20:07
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] Something different ...

 

Has anyone else noticed the recent BBC drama set onboard a SuB?

I saw at least one black bezel on a circular analogue meter that I would reckon was at least 50 years old .That and a bog standard 4 stack filing cabinet ...and a towed array that reduced the comms to shore link to fail completely .

I also wonder if not noticing an Oil tanker on the latest array until it was metres away was a good advert ...

Yes I know it's all fiction and no subs were involved , but a little realism to add to the rising body count would maybe help .....?

 

30 years ago Ed Clancy would have had them using Blue Green Laser Sat comms LOL.

Stop Larfing Andy .

73

John

 

G0API 

 


Re: Something different ...

Gedas
 

duhhh.....gosh now there was a Freudian slip ! NTR-5100 LOL....yes the NTR-51.

Do you know that 4-5 years ago I saw one of these listed on e-bay from a liquidator who did not know what it was and was asking $150 plus $80 shipping ! I was real close to getting it but then I have a basement full of WJ receivers. I had the sad task of getting rid of dozens of old RS-125 systems and many standalone rigs from what used to be ARC (Atlantic Research Corp). An entire U-haul filled with goodies. It would make you vomit if I told you what the highest bid for the whole lot went for :-(

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 2:29 PM, Steve - WB0DBS wrote:

This thread prodded me to go look for the remnants of the Tempest test receiver I had. It was an Electro-Metrics NTR-51, 100Hz - 1 GHz. I still have the manual for it:


and I have the preamps and filters in a box of “someday” projects. The spec sheet had a handwritten note that said $30.5k USD and 30 days ARO. 

73,

Steve
WB0DBS



On Sep 16, 2021, at 12:49 PM, Gedas <w8bya@...> wrote:



It may have been an electro-metrics nontunable receiver. They measured about 30" wide by 18" tall and 20" deep and were light sky blue in color. I think a model NTR 5100 or similar. We used them a lot.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 4:35 AM, Jim Mcilroy via groups.io wrote:

Maybe

I looked that manufacturer up, and I'm not sure we had one of those.

Seem to remember the rig was a metallic blue colour and it was an untuned wideband RX

Jim  G4EQX


On 16/09/2021 06:10, Tim Hague M0AFJ via groups.io wrote:
Dynamic Sciences?

Best Regards
Tim Hague


Re: Something different ...

Steve - WB0DBS
 

This thread prodded me to go look for the remnants of the Tempest test receiver I had. It was an Electro-Metrics NTR-51, 100Hz - 1 GHz. I still have the manual for it:


and I have the preamps and filters in a box of “someday” projects. The spec sheet had a handwritten note that said $30.5k USD and 30 days ARO. 

73,

Steve
WB0DBS



On Sep 16, 2021, at 12:49 PM, Gedas <w8bya@...> wrote:



It may have been an electro-metrics nontunable receiver. They measured about 30" wide by 18" tall and 20" deep and were light sky blue in color. I think a model NTR 5100 or similar. We used them a lot.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 4:35 AM, Jim Mcilroy via groups.io wrote:

Maybe

I looked that manufacturer up, and I'm not sure we had one of those.

Seem to remember the rig was a metallic blue colour and it was an untuned wideband RX

Jim  G4EQX


On 16/09/2021 06:10, Tim Hague M0AFJ via groups.io wrote:
Dynamic Sciences?

Best Regards
Tim Hague


On 15 Sep 2021, at 18:52, Jim Mcilroy via groups.io <gts53@...> wrote:



Spent many an hour wrestling with a Watkins-Johnson EMC receiver which took up two racks in the last century.

The test facility I worked at did have Tempest gear but I'm struggling to remember the manufacturer.

Different times...

Jim G4EQX


On 15/09/2021 16:51, Steve - WB0DBS wrote:
Somewhere in a box in the cellar I have a bunch of preamps from a Tempest test receiver. I should dig them out and see what sort of NF and gain they had. I seem to remember they needed split supplies. Loads of short BNC coax jumpers to select the combinations of preamps and filters. I thought it was odd to use BNC in that application. 

Steve
WB0DBS



On Sep 15, 2021, at 10:32 AM, Gedas <w8bya@...> wrote:



GM John. Well the work at Patuxent was during a slow period as I was primarily a tempest geek and regular RF engineering was all that was required. When we moved to Indiana and I worked for ITT Aerospace is when things got real interesting and I became an NSA certified tempest engineer. I had the honor to work with many of your countrymen on various programs like Bowman etc and got to know many at GCHQ. To be honest I am glad it is all behind me now. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/15/2021 5:30 AM, John Fell wrote:
Hi Gedas,
FB account of some of your world of work exploits .
Patuxent , now we are back in Clancy Territory and the Hunt for Red October ?
Keep on Uwaving  .

73
John
G0API

On Tue, 14 Sept 2021 at 20:01, Gedas <w8bya@...> wrote:

What a wonderful group you guys are ! To be able to chat about neat stuff like this. All I need now is a tall half & half in my hand. And of course because there are tons of uW related equipment onboard all this is on-topic <g>.

Ok, promise.....so only one more tale since you brought up the "jump jet". In my past life I had designed and was responsible for the testing of a certain "box" which took place at the Patuxent NAS in Maryland. OMG now you talk about an awesome place.

Well anyway I was given access to a Harrier along with a pilot to test out my gadget. He climbed up the right side of the aircraft and waited for me to climb up the ladder on the left side. Now this was several decades ago when I was a petite 6'2" and only 250 pounds. The pilot instructed me how to enter the craft and I had lifted up my leg ready to proceed when I pulled it back and took another good look at the cockpit insides (i.e., how freaking tiny the compartment was). I then looked at my fat assets, then looked at the cockpit again and then while looking at the pilot I said to him (who was just this tiny little dude) "I am sorry but I do not want to break anything inside your cockpit". He laughed and volunteered to run some tests for me as I stood off to the side. It was a wonderful experience getting to run tests on so many different aircraft. You CANNOT imagine what it was like with this Harrier chained down over a huge ground plane with it's engines at 100% while I ran my tests. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 2:30 PM, John Fell wrote:
Such Fun -  they would be shutdown before they started these days ...

On a related note , the chap who did the first successful Vertical take off in/on the Flying Bedstead ( Farnborough ?) that lead to the Harrier , worked for Flight Refuelling after the Military .His Rover 90 had the number plate VIF1 .

Turns out we are staying a mile from Lympstone by the river Exe- saw the Commandos doing square bashing this afternoon - very well turned out chaps.

73
John
G0API


On Tue, 14 Sept 2021 at 19:14, Andy G4JNT <andy.g4jnt@...> wrote:
Round about 1978, the RAF Tested a access to a inner city area, by landing a Harrier at BBC Pebble Mill Studios, Birmingham.   If memory serves correctly, the public access was from the adjacent street perhaps 40m from the landing site with just an open wire fence separating.  But one local resident had a garden that backed onto teh fence more or less at teh landing site, and he allowed a fair few people in to perhaps 15m from the aircraft landing.

One local (an objector)  had a sound level meter and he recorded 120dBa where some of us were standing - that, even then, was acknowledged to be well into danger levels.  I know I had trouble hearing my driving instructor a couple of hours later that afternoon.   The report on the News that night had the picture shimmering from vibration at the thing took off. 



On Tue, 14 Sept 2021 at 18:57, John Fell <john.g0api@...> wrote:
Hi Gedas,
That is what my youngest Grandson would call awesome !
Good to know launching the C/Os boots also occurs in the West .
My nearest loud experience was at a Radio Special Event station held at the Bournemouth UK Airshow , when it was held at the Bournemouth International (Hurn) Airport .Our club G4RFR got invited as a good friend of mine Harry G3AAO was at the time the Airport Director .
We were in a well tied down Marquee just off the main apron when the last Vulcan V Bomber was rotated in front  of us .
The station was on TX at the time and the rig output meter was pinned for what seemed like 2 mins as this Goliath hauled ass with its RR (Olympics ?) seemingly near vertical.
At the same show a couple of Harrier jump Jets  - (same as your Marine Corp use) did a couple of downdraft blips and sent several plastic tables and chairs rapidly along the taxiway .
Argh , talking about some things that are factual for a change - whatever next .
Best 73 OM

John
G0API

On Tue, 14 Sept 2021 at 18:11, Gedas <w8bya@...> wrote:

Hi John.......sorry to beat the "dead horse" but just have to share with you my adventure aboard the USS Truman a decade ago as the crew and family members were treated to a "tiger cruise" once the ship arrived home from a tour in the Gulf. Best damn food I ever had too! We departed Norfolk VA and headed out to sea about 80 miles off the coast where we were all treated to a show of force with live ordinance, supersonic flyby's by F-14 & F-18 and the official decommissioning of the amazing F-14 Tomcat (with the sticky digital fuel displays). That has got to be one of my all time favorite jets.

Anyway spending the entire day literally 25' away from the wingtips of the jets as they took off and landed was something you can never ever fully explain nor forget. A final tribute was given by the Navy ceremony "launching-the-boot" of the F-14 squadron leaders boots off the steam powered catapult off the bow of the ship LOL.....what a sight.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 5:47 AM, John Fell wrote:
Hi Gedas,
Ah ,Top Gun - great Fun. My Grandchildren like the music ....

Funnily enough I used to work for Flight Refuelling Electronics , who were the first company to be licensed to manufacture Reedswitches by Amphenol , over here in UK. ( originally invented for Telephone switching circuits by ATT in the 1940's ) .

Our then main use for Reedswitches was as part of Aircraft fuel level monitoring devices , using permanent magnets within floats to trigger them as the level went up on fill or down in use .Being hermetically glass sealed on manufacture the switch contacts remained at very low resistance during use and were anyway often part of resistive ladder networks .

The relevance to metering was the cockpit analogue meters did often stick and needed the occasional thump with a finger .They could have been fitted to our V Bomber fleet ....
FR is long gone and is now owned by Multinational Eaton Valves in the USA - at least manufacturing is still going on here in UK and Eaton are not a Vampire Hedge fund ...
Best 73
John
G0API


On Mon, 13 Sept 2021 at 21:07, Gedas <w8bya@...> wrote:

One of my favorite parts is in the movie Top Gun when Maverick is running WAY low on fuel as he looks over to his digital fuel meter. It showed only 1-2 bars lit up so he raps on it with his finger tips hoping it would bounce back up like an old stuck analog meter <g>.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/13/2021 3:55 PM, Colin Ranson wrote:

Are they not using a redundant nuclear hunter/killer to film on ? Like the Swiftsure Class ? Can’t imagine even BBC props dept to be making some of that stuff.

 

Been watching it, even if giggling about the round analogue meter in the bit of kit.

 

Colin de G8LBS.

 

Sent from Mail for Windows

 

From: John Fell
Sent: 13 September 2021 20:07
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] Something different ...

 

Has anyone else noticed the recent BBC drama set onboard a SuB?

I saw at least one black bezel on a circular analogue meter that I would reckon was at least 50 years old .That and a bog standard 4 stack filing cabinet ...and a towed array that reduced the comms to shore link to fail completely .

I also wonder if not noticing an Oil tanker on the latest array until it was metres away was a good advert ...

Yes I know it's all fiction and no subs were involved , but a little realism to add to the rising body count would maybe help .....?

 

30 years ago Ed Clancy would have had them using Blue Green Laser Sat comms LOL.

Stop Larfing Andy .

73

John

 

G0API 

 


Re: Re Relcom relay for 24GHz

Dave
 

Thanks Paul,
That is very helpful. Hopefully will be active on 24 GHz before not too long.
73
Dave G4GLT.

On 29 Aug 2021, at 17:40, David Newman <davidnewman55@icloud.com> wrote:

Thanks John,
That is very helpful.
73
Dave G4GLT.

Sent from my iPhone

On 29 Aug 2021, at 17:38, Paul G8KFW <admin@bicknells.f2s.com> wrote:

Hi Dave

Just pulled my Relcome from stock

The plastic windows should NOT be removed if you look the metal around the outside of the choke grove, it has been recessed for the widow to sit in

The protective plastic I have come across on wave guide mixers usually has a shade of brown and only semi opaque this I have removed to get proper seating between wave guides

Paul


-----Original Message-----
From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Dave via groups.io
Sent: 29 August 2021 17:07
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] Re Relcom relay for 24GHz

Hello,
Can anyone tell me if I need to remove the clear ‘plastic’ in the three waveguide entrances on this 24GHz relay?
73
Dave G4GLT.








--
Paul Bicknell G8KFW South Coast UK





Re: Something different ...

Gedas
 

It may have been an electro-metrics nontunable receiver. They measured about 30" wide by 18" tall and 20" deep and were light sky blue in color. I think a model NTR 5100 or similar. We used them a lot.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/16/2021 4:35 AM, Jim Mcilroy via groups.io wrote:

Maybe

I looked that manufacturer up, and I'm not sure we had one of those.

Seem to remember the rig was a metallic blue colour and it was an untuned wideband RX

Jim  G4EQX


On 16/09/2021 06:10, Tim Hague M0AFJ via groups.io wrote:
Dynamic Sciences?

Best Regards
Tim Hague


On 15 Sep 2021, at 18:52, Jim Mcilroy via groups.io <gts53@...> wrote:



Spent many an hour wrestling with a Watkins-Johnson EMC receiver which took up two racks in the last century.

The test facility I worked at did have Tempest gear but I'm struggling to remember the manufacturer.

Different times...

Jim G4EQX


On 15/09/2021 16:51, Steve - WB0DBS wrote:
Somewhere in a box in the cellar I have a bunch of preamps from a Tempest test receiver. I should dig them out and see what sort of NF and gain they had. I seem to remember they needed split supplies. Loads of short BNC coax jumpers to select the combinations of preamps and filters. I thought it was odd to use BNC in that application. 

Steve
WB0DBS



On Sep 15, 2021, at 10:32 AM, Gedas <w8bya@...> wrote:



GM John. Well the work at Patuxent was during a slow period as I was primarily a tempest geek and regular RF engineering was all that was required. When we moved to Indiana and I worked for ITT Aerospace is when things got real interesting and I became an NSA certified tempest engineer. I had the honor to work with many of your countrymen on various programs like Bowman etc and got to know many at GCHQ. To be honest I am glad it is all behind me now. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/15/2021 5:30 AM, John Fell wrote:
Hi Gedas,
FB account of some of your world of work exploits .
Patuxent , now we are back in Clancy Territory and the Hunt for Red October ?
Keep on Uwaving  .

73
John
G0API

On Tue, 14 Sept 2021 at 20:01, Gedas <w8bya@...> wrote:

What a wonderful group you guys are ! To be able to chat about neat stuff like this. All I need now is a tall half & half in my hand. And of course because there are tons of uW related equipment onboard all this is on-topic <g>.

Ok, promise.....so only one more tale since you brought up the "jump jet". In my past life I had designed and was responsible for the testing of a certain "box" which took place at the Patuxent NAS in Maryland. OMG now you talk about an awesome place.

Well anyway I was given access to a Harrier along with a pilot to test out my gadget. He climbed up the right side of the aircraft and waited for me to climb up the ladder on the left side. Now this was several decades ago when I was a petite 6'2" and only 250 pounds. The pilot instructed me how to enter the craft and I had lifted up my leg ready to proceed when I pulled it back and took another good look at the cockpit insides (i.e., how freaking tiny the compartment was). I then looked at my fat assets, then looked at the cockpit again and then while looking at the pilot I said to him (who was just this tiny little dude) "I am sorry but I do not want to break anything inside your cockpit". He laughed and volunteered to run some tests for me as I stood off to the side. It was a wonderful experience getting to run tests on so many different aircraft. You CANNOT imagine what it was like with this Harrier chained down over a huge ground plane with it's engines at 100% while I ran my tests. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 2:30 PM, John Fell wrote:
Such Fun -  they would be shutdown before they started these days ...

On a related note , the chap who did the first successful Vertical take off in/on the Flying Bedstead ( Farnborough ?) that lead to the Harrier , worked for Flight Refuelling after the Military .His Rover 90 had the number plate VIF1 .

Turns out we are staying a mile from Lympstone by the river Exe- saw the Commandos doing square bashing this afternoon - very well turned out chaps.

73
John
G0API


On Tue, 14 Sept 2021 at 19:14, Andy G4JNT <andy.g4jnt@...> wrote:
Round about 1978, the RAF Tested a access to a inner city area, by landing a Harrier at BBC Pebble Mill Studios, Birmingham.   If memory serves correctly, the public access was from the adjacent street perhaps 40m from the landing site with just an open wire fence separating.  But one local resident had a garden that backed onto teh fence more or less at teh landing site, and he allowed a fair few people in to perhaps 15m from the aircraft landing.

One local (an objector)  had a sound level meter and he recorded 120dBa where some of us were standing - that, even then, was acknowledged to be well into danger levels.  I know I had trouble hearing my driving instructor a couple of hours later that afternoon.   The report on the News that night had the picture shimmering from vibration at the thing took off. 



On Tue, 14 Sept 2021 at 18:57, John Fell <john.g0api@...> wrote:
Hi Gedas,
That is what my youngest Grandson would call awesome !
Good to know launching the C/Os boots also occurs in the West .
My nearest loud experience was at a Radio Special Event station held at the Bournemouth UK Airshow , when it was held at the Bournemouth International (Hurn) Airport .Our club G4RFR got invited as a good friend of mine Harry G3AAO was at the time the Airport Director .
We were in a well tied down Marquee just off the main apron when the last Vulcan V Bomber was rotated in front  of us .
The station was on TX at the time and the rig output meter was pinned for what seemed like 2 mins as this Goliath hauled ass with its RR (Olympics ?) seemingly near vertical.
At the same show a couple of Harrier jump Jets  - (same as your Marine Corp use) did a couple of downdraft blips and sent several plastic tables and chairs rapidly along the taxiway .
Argh , talking about some things that are factual for a change - whatever next .
Best 73 OM

John
G0API

On Tue, 14 Sept 2021 at 18:11, Gedas <w8bya@...> wrote:

Hi John.......sorry to beat the "dead horse" but just have to share with you my adventure aboard the USS Truman a decade ago as the crew and family members were treated to a "tiger cruise" once the ship arrived home from a tour in the Gulf. Best damn food I ever had too! We departed Norfolk VA and headed out to sea about 80 miles off the coast where we were all treated to a show of force with live ordinance, supersonic flyby's by F-14 & F-18 and the official decommissioning of the amazing F-14 Tomcat (with the sticky digital fuel displays). That has got to be one of my all time favorite jets.

Anyway spending the entire day literally 25' away from the wingtips of the jets as they took off and landed was something you can never ever fully explain nor forget. A final tribute was given by the Navy ceremony "launching-the-boot" of the F-14 squadron leaders boots off the steam powered catapult off the bow of the ship LOL.....what a sight.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 5:47 AM, John Fell wrote:
Hi Gedas,
Ah ,Top Gun - great Fun. My Grandchildren like the music ....

Funnily enough I used to work for Flight Refuelling Electronics , who were the first company to be licensed to manufacture Reedswitches by Amphenol , over here in UK. ( originally invented for Telephone switching circuits by ATT in the 1940's ) .

Our then main use for Reedswitches was as part of Aircraft fuel level monitoring devices , using permanent magnets within floats to trigger them as the level went up on fill or down in use .Being hermetically glass sealed on manufacture the switch contacts remained at very low resistance during use and were anyway often part of resistive ladder networks .

The relevance to metering was the cockpit analogue meters did often stick and needed the occasional thump with a finger .They could have been fitted to our V Bomber fleet ....
FR is long gone and is now owned by Multinational Eaton Valves in the USA - at least manufacturing is still going on here in UK and Eaton are not a Vampire Hedge fund ...
Best 73
John
G0API


On Mon, 13 Sept 2021 at 21:07, Gedas <w8bya@...> wrote:

One of my favorite parts is in the movie Top Gun when Maverick is running WAY low on fuel as he looks over to his digital fuel meter. It showed only 1-2 bars lit up so he raps on it with his finger tips hoping it would bounce back up like an old stuck analog meter <g>.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/13/2021 3:55 PM, Colin Ranson wrote:

Are they not using a redundant nuclear hunter/killer to film on ? Like the Swiftsure Class ? Can’t imagine even BBC props dept to be making some of that stuff.

 

Been watching it, even if giggling about the round analogue meter in the bit of kit.

 

Colin de G8LBS.

 

Sent from Mail for Windows

 

From: John Fell
Sent: 13 September 2021 20:07
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] Something different ...

 

Has anyone else noticed the recent BBC drama set onboard a SuB?

I saw at least one black bezel on a circular analogue meter that I would reckon was at least 50 years old .That and a bog standard 4 stack filing cabinet ...and a towed array that reduced the comms to shore link to fail completely .

I also wonder if not noticing an Oil tanker on the latest array until it was metres away was a good advert ...

Yes I know it's all fiction and no subs were involved , but a little realism to add to the rising body count would maybe help .....?

 

30 years ago Ed Clancy would have had them using Blue Green Laser Sat comms LOL.

Stop Larfing Andy .

73

John

 

G0API 

 


Charity tert equipment disposal

g4bao
 

Andy Wade G4AJW is disposing of surplus test equipment to raise money for Charity. There are items ranging from Network analysers to lots of smaller unlisted items such as connectors that can be viewed of collection of bigger stuff .

Attached is a word file with details and a download link to the list in Excel format.

All communication about this should be via email only to John G3UUT
 

Do not reply on the reflector or any other email address as it will not be dealt with
 
All equipment must be collected from North Cambridge.


Re: Something different ...

Jim Mcilroy
 

Maybe

I looked that manufacturer up, and I'm not sure we had one of those.

Seem to remember the rig was a metallic blue colour and it was an untuned wideband RX

Jim  G4EQX


On 16/09/2021 06:10, Tim Hague M0AFJ via groups.io wrote:
Dynamic Sciences?

Best Regards
Tim Hague


On 15 Sep 2021, at 18:52, Jim Mcilroy via groups.io <gts53@...> wrote:



Spent many an hour wrestling with a Watkins-Johnson EMC receiver which took up two racks in the last century.

The test facility I worked at did have Tempest gear but I'm struggling to remember the manufacturer.

Different times...

Jim G4EQX


On 15/09/2021 16:51, Steve - WB0DBS wrote:
Somewhere in a box in the cellar I have a bunch of preamps from a Tempest test receiver. I should dig them out and see what sort of NF and gain they had. I seem to remember they needed split supplies. Loads of short BNC coax jumpers to select the combinations of preamps and filters. I thought it was odd to use BNC in that application. 

Steve
WB0DBS



On Sep 15, 2021, at 10:32 AM, Gedas <w8bya@...> wrote:



GM John. Well the work at Patuxent was during a slow period as I was primarily a tempest geek and regular RF engineering was all that was required. When we moved to Indiana and I worked for ITT Aerospace is when things got real interesting and I became an NSA certified tempest engineer. I had the honor to work with many of your countrymen on various programs like Bowman etc and got to know many at GCHQ. To be honest I am glad it is all behind me now. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/15/2021 5:30 AM, John Fell wrote:
Hi Gedas,
FB account of some of your world of work exploits .
Patuxent , now we are back in Clancy Territory and the Hunt for Red October ?
Keep on Uwaving  .

73
John
G0API

On Tue, 14 Sept 2021 at 20:01, Gedas <w8bya@...> wrote:

What a wonderful group you guys are ! To be able to chat about neat stuff like this. All I need now is a tall half & half in my hand. And of course because there are tons of uW related equipment onboard all this is on-topic <g>.

Ok, promise.....so only one more tale since you brought up the "jump jet". In my past life I had designed and was responsible for the testing of a certain "box" which took place at the Patuxent NAS in Maryland. OMG now you talk about an awesome place.

Well anyway I was given access to a Harrier along with a pilot to test out my gadget. He climbed up the right side of the aircraft and waited for me to climb up the ladder on the left side. Now this was several decades ago when I was a petite 6'2" and only 250 pounds. The pilot instructed me how to enter the craft and I had lifted up my leg ready to proceed when I pulled it back and took another good look at the cockpit insides (i.e., how freaking tiny the compartment was). I then looked at my fat assets, then looked at the cockpit again and then while looking at the pilot I said to him (who was just this tiny little dude) "I am sorry but I do not want to break anything inside your cockpit". He laughed and volunteered to run some tests for me as I stood off to the side. It was a wonderful experience getting to run tests on so many different aircraft. You CANNOT imagine what it was like with this Harrier chained down over a huge ground plane with it's engines at 100% while I ran my tests. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 2:30 PM, John Fell wrote:
Such Fun -  they would be shutdown before they started these days ...

On a related note , the chap who did the first successful Vertical take off in/on the Flying Bedstead ( Farnborough ?) that lead to the Harrier , worked for Flight Refuelling after the Military .His Rover 90 had the number plate VIF1 .

Turns out we are staying a mile from Lympstone by the river Exe- saw the Commandos doing square bashing this afternoon - very well turned out chaps.

73
John
G0API


On Tue, 14 Sept 2021 at 19:14, Andy G4JNT <andy.g4jnt@...> wrote:
Round about 1978, the RAF Tested a access to a inner city area, by landing a Harrier at BBC Pebble Mill Studios, Birmingham.   If memory serves correctly, the public access was from the adjacent street perhaps 40m from the landing site with just an open wire fence separating.  But one local resident had a garden that backed onto teh fence more or less at teh landing site, and he allowed a fair few people in to perhaps 15m from the aircraft landing.

One local (an objector)  had a sound level meter and he recorded 120dBa where some of us were standing - that, even then, was acknowledged to be well into danger levels.  I know I had trouble hearing my driving instructor a couple of hours later that afternoon.   The report on the News that night had the picture shimmering from vibration at the thing took off. 



On Tue, 14 Sept 2021 at 18:57, John Fell <john.g0api@...> wrote:
Hi Gedas,
That is what my youngest Grandson would call awesome !
Good to know launching the C/Os boots also occurs in the West .
My nearest loud experience was at a Radio Special Event station held at the Bournemouth UK Airshow , when it was held at the Bournemouth International (Hurn) Airport .Our club G4RFR got invited as a good friend of mine Harry G3AAO was at the time the Airport Director .
We were in a well tied down Marquee just off the main apron when the last Vulcan V Bomber was rotated in front  of us .
The station was on TX at the time and the rig output meter was pinned for what seemed like 2 mins as this Goliath hauled ass with its RR (Olympics ?) seemingly near vertical.
At the same show a couple of Harrier jump Jets  - (same as your Marine Corp use) did a couple of downdraft blips and sent several plastic tables and chairs rapidly along the taxiway .
Argh , talking about some things that are factual for a change - whatever next .
Best 73 OM

John
G0API

On Tue, 14 Sept 2021 at 18:11, Gedas <w8bya@...> wrote:

Hi John.......sorry to beat the "dead horse" but just have to share with you my adventure aboard the USS Truman a decade ago as the crew and family members were treated to a "tiger cruise" once the ship arrived home from a tour in the Gulf. Best damn food I ever had too! We departed Norfolk VA and headed out to sea about 80 miles off the coast where we were all treated to a show of force with live ordinance, supersonic flyby's by F-14 & F-18 and the official decommissioning of the amazing F-14 Tomcat (with the sticky digital fuel displays). That has got to be one of my all time favorite jets.

Anyway spending the entire day literally 25' away from the wingtips of the jets as they took off and landed was something you can never ever fully explain nor forget. A final tribute was given by the Navy ceremony "launching-the-boot" of the F-14 squadron leaders boots off the steam powered catapult off the bow of the ship LOL.....what a sight.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/14/2021 5:47 AM, John Fell wrote:
Hi Gedas,
Ah ,Top Gun - great Fun. My Grandchildren like the music ....

Funnily enough I used to work for Flight Refuelling Electronics , who were the first company to be licensed to manufacture Reedswitches by Amphenol , over here in UK. ( originally invented for Telephone switching circuits by ATT in the 1940's ) .

Our then main use for Reedswitches was as part of Aircraft fuel level monitoring devices , using permanent magnets within floats to trigger them as the level went up on fill or down in use .Being hermetically glass sealed on manufacture the switch contacts remained at very low resistance during use and were anyway often part of resistive ladder networks .

The relevance to metering was the cockpit analogue meters did often stick and needed the occasional thump with a finger .They could have been fitted to our V Bomber fleet ....
FR is long gone and is now owned by Multinational Eaton Valves in the USA - at least manufacturing is still going on here in UK and Eaton are not a Vampire Hedge fund ...
Best 73
John
G0API


On Mon, 13 Sept 2021 at 21:07, Gedas <w8bya@...> wrote:

One of my favorite parts is in the movie Top Gun when Maverick is running WAY low on fuel as he looks over to his digital fuel meter. It showed only 1-2 bars lit up so he raps on it with his finger tips hoping it would bounce back up like an old stuck analog meter <g>.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/13/2021 3:55 PM, Colin Ranson wrote:

Are they not using a redundant nuclear hunter/killer to film on ? Like the Swiftsure Class ? Can’t imagine even BBC props dept to be making some of that stuff.

 

Been watching it, even if giggling about the round analogue meter in the bit of kit.

 

Colin de G8LBS.

 

Sent from Mail for Windows

 

From: John Fell
Sent: 13 September 2021 20:07
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] Something different ...

 

Has anyone else noticed the recent BBC drama set onboard a SuB?

I saw at least one black bezel on a circular analogue meter that I would reckon was at least 50 years old .That and a bog standard 4 stack filing cabinet ...and a towed array that reduced the comms to shore link to fail completely .

I also wonder if not noticing an Oil tanker on the latest array until it was metres away was a good advert ...

Yes I know it's all fiction and no subs were involved , but a little realism to add to the rising body count would maybe help .....?

 

30 years ago Ed Clancy would have had them using Blue Green Laser Sat comms LOL.

Stop Larfing Andy .

73

John

 

G0API 

 

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