Date   

Re: PLUTO

Robin Szemeti - G1YFG
 

Well as you can probably guess, my enquiry was more along the lines of "well, ive ordered one, so how bad are they"  As predicted elsewhere, the USB socket tried to fall off within 30 minutes, mostly because it is completely the wrong socket for the holes on the board. I;ve removed it and a new socket with the correct through-hole pins is on its way from Farnell.

I've got an decent HP analyser, but no sweep output, so I needed "something" to play with.

It seems to work "kinda OK" .. I was able to check a couple of filters, and a directional coupler that I had no idea of the ratio on.   I was also able to determine that my 1296mhz aerial recently built was tuned to about 1225 MHz ... and then the USB fell off. 

While waiting for the new socket, I'll do the mods to the 120kHz filter suggested on this page and see how that works out.


On Sun, 19 Apr 2020 at 17:48, Paul Randall G3NJV <paulfrandall@...> wrote:

The measuring side of these devices is basically a direct conversion receiver, mixer output goes through a 120kHz “IF filter” to a AD8307 wideband log detector. When used to sweep filters the AD4351 in the tracking generator is given a fixed offset of 120kHz from the AD4351 driving the receiver. This technique avoids problems with harmonics of the tracking generator affecting observed frequency response curves of, for example, a filter.

 

When used as a spectrum analyser the characteristic response plot it gives with a big notch in the middle is the IF filter being swept, going down to zero beat (the notch) then up again the other side. The receiver is also very non linear and it is very easy to saturate the mixer with the tracking generator giving a non-linear amplitude response. For any actual amplitude measurements either in spectrum or sweeper mode you must calibrate the display with a step attenuator. The spectrum analyser is basically useless for observing any characteristics of the input signal but does tell you a signal is present, its frequency and if whatever you are doing makes it go up or down.

 

The software used to drive it is often LinNWT or WinNWT and this was written to support completely different NWA devices made in Germany and then pirated by the Chinese. It has lots of features that are not applicable to this hardware.  Two other programs are available that support the device, SNAsharp and VMA which attempt to better utilise the hardware. There are also modifications available that can improve dynamic range.

 

As I said previously, the best example of the genre found so far is known as the D6 and lots of info exists on the web search “D6 spectrum” Having such a device is helluva lot better than working completely blind if you are a beginner making up an Easy100 upconverter for example.

 

Paul

 

Sent from Mail for Windows 10

 

From: Robin Szemeti
Sent: 19 April 2020 16:45
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] PLUTO

 

Looks like as a spectrum analyser it is pretty useless, but as a sweep/tracking generator it looks pretty good for the money.  I already have a decent HP analyser, but for peaking filters, it looks like it would work, providing you don't rely on it for actual level measurements, it should be fine.

 

On Sun, 19 Apr 2020 at 16:02, Mark <mark.g0mgx@...> wrote:

I did a review of these spectrum analyser boards on my YouTube channel a while ago; if its of interest to anyone.

 

https://youtu.be/Kp_T2c5hl6Y

 

Mark

G0MGX

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Robin Szemeti
Sent: 19 April 2020 13:37
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] PLUTO

 

 

On Sun, 19 Apr 2020 at 13:27, Simon Brown <simon@...> wrote:

Ben,

 

Pluto is excellent value for money, even though a modification is required. Pluto wasn’t designed for ham use but for a few € we have a very usable device. AD will be improving the throughput soon, also I’ve pleaded with them to spend a few $ and provide true USB3 throughput which the rest of the design can handle.

 

I can’t handle this tiny soldering myself, there are many in our community who can though.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of militaryoperator via groups.io
Sent: 18 April 2020 10:25
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] PLUTO

 

FWIW I use a modified Pluto with the Leo Bodnar GPSDO, as a result it’s rock solid. If not modified then expect it to drift like the clappers.

 

 

Don't forget the 40 MHz TCXO, unless you have a GPS source.

 

 

This seems to be the norm. Buy something, Pluto, Lime, Hack, IC9700 and then have to mess about, faffing with smd components (which some find an easy task) to add better oscillators etc to get the blasted thing stable enough to use. 

 

As decent ppm osc's are available at cheap prices (though a pain to fit) I can't see why the manufacturers don't fit them. 

 

I was thinking of buying a Pluto but as it requires modding then maybe not for me.

 

Hey ho.  Ben. 

 

 



--

Best regards,

Robin Szemeti

Redpoint Consulting Limited

E: robin@...
T: +44 (0) 1299 405028
M: +44 (0) 7971 883371

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--

Best regards,

Robin Szemeti

Redpoint Consulting Limited

E: robin@...
T: +44 (0) 1299 405028
M: +44 (0) 7971 883371

CONFIDENTIALITY NOTICE
The information contained in this e-mail is intended only for the
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and must not distribute or copy it.
Please accept the sender's apologies, notify the sender immediately
by return e-mail and delete this communication.

Thank you.

 



--
Best regards,

Robin Szemeti

Redpoint Consulting Limited

E: robin@...
T: +44 (0) 1299 405028
M: +44 (0) 7971 883371

CONFIDENTIALITY NOTICE
The information contained in this e-mail is intended only for the
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Thank you.


Re: RadCom / Scatter point article

KENT BRITAIN
 

Hi Chris

I have four 141T's, two with TG's and one with the preselector.
Been using them for 20 years.

(The other two are backup's!}

Happy to help you where I can.

Kent

On Monday, April 20, 2020, 4:22:24 PM CDT, chris ruddy via groups.io <mm0kos@...> wrote:


Hi Tom

 

It would be great to see some tuts on some of the older gear like the HP141 and the tracking gens, I have one and just started using it and reading the manual just aint that straight forward.

Setting it up for different things and different TGs. Probably most of the guys here have a high degree of knowledge of these units but some of us are lagging a bit behind as we where not born into the communications industry.

Its great see in videos on You Tube and picture tutorials but sometimes you don’t see clearly what cable goes where from LOs and to which ports. Just the really silly things that are bypassed with the more blessed that have been using these units for some time.

 

Thanks Chris MM0KOS

 

 

Sent from Mail for Windows 10

 

From: Tom GM8MJV
Sent: 20 April 2020 21:15
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] RadCom / Scatter point article

 

Hello All

 

A comment on earlier mail by Paul G8AFC

 

So the purchase of the Chinese board was simply to give me some modicum  of microwave test gear that wasn’t going to cost the earth and didn’t weigh even more for when I am away from my shack here!

 

 

Sometime I see comments  ‘Just scan the filter’ , it will do for basic checks, etc

 

There are a pile of little ‘modules’, gadget’s less than £100 on ebay and the likes.    What would be handy/good is how do you use some of these boards to ‘scan a filter’ - use it to test xyz.

 

Just some sort of ‘use by example’ type guide to help those who have never used the higher end (read proper) Spectrum analyser or an HP xyz to do what they do.

 

With the lock down there will be free time to scribble some notes that may help others. 

 

Tom

 

 

--
73’s

Tom
GM8MJV (IO85)



 

 


Re: Spectrum-Analyzer-USB-LTDZ-35-4400M

Paul Randall G3NJV
 

Hi Paul

 

Winnwt5 is available at the foot of this page

http://www.asobol.ru/software/winnwt5

 

VMA software is here

https://vma-satellite.blogspot.com/2016/12/vma-simple-spectrum-analyser-download.html

 

SNA sharp software is here

http://alloza.eu/david/WordPress3/?p=1014

 

If you buy the D6 version here is the modification

http://alloza.eu/david/WordPress3/?p=542

 

I have the software package which contains the elusive Winnwt 4-11-09 often specified for these boards but attempts to email it cause an undeliverable response.

 

Best regards Paul G3NJV

 

 

Sent from Mail for Windows 10

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Paul Entwistle via groups.io <g8afc@...>
Sent: Sunday, April 19, 2020 7:26:26 PM
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] Spectrum-Analyzer-USB-LTDZ-35-4400M

 

Hello Robin

                                                            Sincere thanks for replying to my request and the software link – will try it later on this evening.

 

 I don’t think that your comments as to its usefulness have disappointed me, but for my purposes I think it will be “useful” as long as all the caveats are kept in mind.

 

My winter QTH is Mauritius island (sadly, that may change this year L) where I operate 3B8HE.  Last year a friend there asked me to build a QO-100 up –converter for him, which I duly did. Unfortunately my friend decided that he would have to separate the driver part and place the PA (3W still the PA) at the dish position.

He failed to get it to work (despite the fact I had worked him on it from the UK) and was convinced the LO was not functioning but we had no suitable test gear and I brought the unit back to the UK where it proved to be functioning 100%-  I eventually gave it to a local amateur here in Manchester!!

 

So the purchase of the Chinese board was simply to give me some modicum  of microwave test gear that wasn’t going to cost the earth and didn’t weigh even more for when I am away from my shack here!

 

In fact if it keeps me amused for a few evenings it will be more than worth the money J

 

So thanks again for the help and info

 

Vy 73 de Paul G8AFC

 

 

From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Robin Szemeti
Sent: 19 April 2020 16:35
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] Spectrum-Analyzer-USB-LTDZ-35-4400M

 

 

On Sun, 19 Apr 2020 at 15:44, Paul Entwistle via groups.io <g8afc=ntlworld.com@groups.io> wrote:

Simon, Ben

                        I also bought one of the above on the basis of “for that price it must be worth a try”- however I have not been able to find a site that doesn’t look suspicious! from which to download the software – could anyone help so I can at least satisfy my curiosity before buying a Pluto?

 

With Thanks

 

Paul G8AFC

 

From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Robin Szemeti
Sent: 19 April 2020 13:37
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] PLUTO

 

 

On Sun, 19 Apr 2020 at 13:27, Simon Brown <simon@...> wrote:

Ben,

 

Pluto is excellent value for money, even though a modification is required. Pluto wasn’t designed for ham use but for a few € we have a very usable device. AD will be improving the throughput soon, also I’ve pleaded with them to spend a few $ and provide true USB3 throughput which the rest of the design can handle.

 

I can’t handle this tiny soldering myself, there are many in our community who can though.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of militaryoperator via groups.io
Sent: 18 April 2020 10:25
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] PLUTO

 

FWIW I use a modified Pluto with the Leo Bodnar GPSDO, as a result it’s rock solid. If not modified then expect it to drift like the clappers.

 

 

Don't forget the 40 MHz TCXO, unless you have a GPS source.

 

 

This seems to be the norm. Buy something, Pluto, Lime, Hack, IC9700 and then have to mess about, faffing with smd components (which some find an easy task) to add better oscillators etc to get the blasted thing stable enough to use. 

 

As decent ppm osc's are available at cheap prices (though a pain to fit) I can't see why the manufacturers don't fit them. 

 

I was thinking of buying a Pluto but as it requires modding then maybe not for me.

 

Hey ho.  Ben. 

 

 



--

Best regards,







Robin Szemeti







Redpoint Consulting Limited 







E: robin@... 



T: +44 (0) 1299 405028 



M: +44 (0) 7971 883371 







CONFIDENTIALITY NOTICE 



The information contained in this e-mail is intended only for the



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intended recipient, you have received this communication in error 



and must not distribute or copy it. 



Please accept the sender's apologies, notify the sender immediately 



by return e-mail and delete this communication. 







Thank you. 



--

Best regards,



Robin Szemeti



Redpoint Consulting Limited 



E: robin@... 

T: +44 (0) 1299 405028 

M: +44 (0) 7971 883371 



CONFIDENTIALITY NOTICE 

The information contained in this e-mail is intended only for the

confidential use of the above named recipient. If you are not the

intended recipient or person responsible for delivering it to the

intended recipient, you have received this communication in error 

and must not distribute or copy it. 

Please accept the sender's apologies, notify the sender immediately 

by return e-mail and delete this communication. 



Thank you. 

 


Re: RadCom / Scatter point article

Chris Ruddy MM0KOS
 

Hi Tom

 

It would be great to see some tuts on some of the older gear like the HP141 and the tracking gens, I have one and just started using it and reading the manual just aint that straight forward.

Setting it up for different things and different TGs. Probably most of the guys here have a high degree of knowledge of these units but some of us are lagging a bit behind as we where not born into the communications industry.

Its great see in videos on You Tube and picture tutorials but sometimes you don’t see clearly what cable goes where from LOs and to which ports. Just the really silly things that are bypassed with the more blessed that have been using these units for some time.

 

Thanks Chris MM0KOS

 

 

Sent from Mail for Windows 10

 

From: Tom GM8MJV
Sent: 20 April 2020 21:15
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] RadCom / Scatter point article

 

Hello All

 

A comment on earlier mail by Paul G8AFC

 

So the purchase of the Chinese board was simply to give me some modicum  of microwave test gear that wasn’t going to cost the earth and didn’t weigh even more for when I am away from my shack here!

 

 

Sometime I see comments  ‘Just scan the filter’ , it will do for basic checks, etc

 

There are a pile of little ‘modules’, gadget’s less than £100 on ebay and the likes.    What would be handy/good is how do you use some of these boards to ‘scan a filter’ - use it to test xyz.

 

Just some sort of ‘use by example’ type guide to help those who have never used the higher end (read proper) Spectrum analyser or an HP xyz to do what they do.

 

With the lock down there will be free time to scribble some notes that may help others. 

 

Tom

 

 

--
73’s

Tom
GM8MJV (IO85)



 

 


Re: RadCom / Scatter point article

Paul G8KFW
 

Hi Tom

 

Can you enlarge on the Chinese board that was simply to give me some modicum  of microwave test gear

 

although I am familiar with a fear amount of Test gear  can you please explain what you mean by a  HP xyz or is it just any bit of HP test kit

because there is a HP xyz display

 

Regards Paul

 


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Tom GM8MJV
Sent: 20 April 2020 21:15
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] RadCom / Scatter point article

 

Hello All

 

A comment on earlier mail by Paul G8AFC

 

So the purchase of the Chinese board was simply to give me some modicum  of microwave test gear that wasn’t going to cost the earth and didn’t weigh even more for when I am away from my shack here!

 

Sometime I see comments  ‘Just scan the filter’ , it will do for basic checks, etc

 

There are a pile of little ‘modules’, gadget’s less than £100 on ebay and the likes.    What would be handy/good is how do you use some of these boards to ‘scan a filter’ - use it to test xyz.

 

Just some sort of ‘use by example’ type guide to help those who have never used the higher end (read proper) Spectrum analyser or an HP xyz to do what they do.

 

With the lock down there will be free time to scribble some notes that may help others. 

 

73’s

Tom
GM8MJV (IO85)

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
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--
Paul Bicknell G8KFW   South Coast UK


RadCom / Scatter point article

Tom GM8MJV
 

Hello All

A comment on earlier mail by Paul G8AFC

So the purchase of the Chinese board was simply to give me some modicum  of microwave test gear that wasn’t going to cost the earth and didn’t weigh even more for when I am away from my shack here!
 

Sometime I see comments  ‘Just scan the filter’ , it will do for basic checks, etc

There are a pile of little ‘modules’, gadget’s less than £100 on ebay and the likes.    What would be handy/good is how do you use some of these boards to ‘scan a filter’ - use it to test xyz.

Just some sort of ‘use by example’ type guide to help those who have never used the higher end (read proper) Spectrum analyser or an HP xyz to do what they do.

With the lock down there will be free time to scribble some notes that may help others. 

Tom


--
73’s

Tom
GM8MJV (IO85)






Re: Tuesday night?? 9Cm

Chris G0WUS
 

Will be for the tuesday after gonna be good test then.on ukac shf night.

Chris G0WUS



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: "militaryoperator via groups.io" <Military1944@...>
Date: 20/04/2020 7:24 pm (GMT+00:00)
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] Tuesday night?? 9Cm

 just wondered if it would be worth my time putting it on the mast. 

Ben IO82UJ
-----------------


Guess not !


Re: Tuesday night?? 9Cm

militaryoperator
 

 just wondered if it would be worth my time putting it on the mast. 

Ben IO82UJ
-----------------


Guess not !


Re: Tuesday night?? 9Cm

G3UVR Denis IO83KH
 

Hi Ben.

Great idea for a 9cm test evening but sorry there will be no time during the UKAC 23cm. Another evening would be better (not a UKAC contest evening) I expect to contact about 60 stations on 23cm which requires  a lot of effort calling, tuning and monitoring KST leaving no time for other bands.

To make sure we are on the right frequency at the right time ON4KST is the starting place I am there most evenings waiting to try mircowave tests on what ever band.

73 de Denis G3UVR


Re: RF Test Equip- Who's still Going?

Clive Elliott GW4MBS
 

Me too! Looking for the head for my HP435B, itching to do some meaningful measurements to get myself properly back on 3cm after a 35-year gap.
--
Clive GW4MBS (ex-G8ADP)
Pottering on 6m - 3cm in a valley in IO71XW where any QSO is a triumph of optimism over geography!


Re: RF Test Equip- Who's still Going?

Robin Szemeti - G1YFG
 

Speaking of which ... if anyone has a HP435/7 whatever and a reasonably priced sensor ...


On Mon, 20 Apr 2020 at 14:07, Paul Selwood G3YDY via groups.io <g3ydy=blueyonder.co.uk@groups.io> wrote:

Conrad,

John used to come and purchase nearly all our surplus equipment in Chelmsford about 25 years ago. Fairly rock bottom prices imagine his surprise when he lost 2 lots of 600 items in a row to someone he didn’t know!

Paul

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Conrad, PA5Y
Sent: 20 April 2020 13:05
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

That was later on. When he was at Birkenshaw you had to brave the dogs which were partial to RF infused individuals or so it seemed to me. John kept stuff forever and never learned when the value reduced. Consequently he had a lot of stuff that he would never sell. In his heyday it was mind boggling. I saw of 50 Bird model 43s in a basket once. 

 

Pat was great!

 

73

 

Conrad PA5Y

 


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Dave G8KHU via groups.io <david@...>
Sent: 20 April 2020 13:40
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

Hi Paul

It would be useful to know if there are dealers who still deal in the older kit. There are many who deal in modern second user kit - but at modern kit prices.
The any one I know for definite that deals in older kit and is still a going concern is Stewart of Reading.
I used to deal with Johns Radio some 20 to 30 years ago, at the height of his empire he had 3 old cotton mills stuffed to the gills with test equipment. If it had ever been made John would have it, and awesomely Pat could tell you which mill - floor - room - shelf you would find it on, all from memory. Wandering round the mills was like being Aladdin's cave.
Cheers
Dave
G8KHU


This email has been scanned by BullGuard antivirus protection.
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--
Best regards,

Robin Szemeti

Redpoint Consulting Limited

E: robin@...
T: +44 (0) 1299 405028
M: +44 (0) 7971 883371

CONFIDENTIALITY NOTICE
The information contained in this e-mail is intended only for the
confidential use of the above named recipient. If you are not the
intended recipient or person responsible for delivering it to the
intended recipient, you have received this communication in error
and must not distribute or copy it.
Please accept the sender's apologies, notify the sender immediately
by return e-mail and delete this communication.

Thank you.


Re: RF Test Equip- Who's still Going?

Paul Selwood G3YDY
 

Conrad,

John used to come and purchase nearly all our surplus equipment in Chelmsford about 25 years ago. Fairly rock bottom prices imagine his surprise when he lost 2 lots of 600 items in a row to someone he didn’t know!

Paul

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Conrad, PA5Y
Sent: 20 April 2020 13:05
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

That was later on. When he was at Birkenshaw you had to brave the dogs which were partial to RF infused individuals or so it seemed to me. John kept stuff forever and never learned when the value reduced. Consequently he had a lot of stuff that he would never sell. In his heyday it was mind boggling. I saw of 50 Bird model 43s in a basket once. 

 

Pat was great!

 

73

 

Conrad PA5Y

 


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Dave G8KHU via groups.io <david@...>
Sent: 20 April 2020 13:40
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

Hi Paul

It would be useful to know if there are dealers who still deal in the older kit. There are many who deal in modern second user kit - but at modern kit prices.
The any one I know for definite that deals in older kit and is still a going concern is Stewart of Reading.
I used to deal with Johns Radio some 20 to 30 years ago, at the height of his empire he had 3 old cotton mills stuffed to the gills with test equipment. If it had ever been made John would have it, and awesomely Pat could tell you which mill - floor - room - shelf you would find it on, all from memory. Wandering round the mills was like being Aladdin's cave.
Cheers
Dave
G8KHU


This email has been scanned by BullGuard antivirus protection.
For more info visit www.bullguard.com


Re: RF Test Equip- Who's still Going?

Paul G8KFW
 

Hi Dave

 

As I sed there are 6 traders of used old test equipment that I talk to regularly

But Depending on what you want in old test equipment there could be others

 

Regards Paul Call me

 


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Conrad, PA5Y
Sent: 20 April 2020 13:05
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

That was later on. When he was at Birkenshaw you had to brave the dogs which were partial to RF infused individuals or so it seemed to me. John kept stuff forever and never learned when the value reduced. Consequently he had a lot of stuff that he would never sell. In his heyday it was mind boggling. I saw of 50 Bird model 43s in a basket once. 

 

Pat was great!

 

73

 

Conrad PA5Y

 


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Dave G8KHU via groups.io <david@...>
Sent: 20 April 2020 13:40
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

Hi Paul

It would be useful to know if there are dealers who still deal in the older kit. There are many who deal in modern second user kit - but at modern kit prices.
The any one I know for definite that deals in older kit and is still a going concern is Stewart of Reading.
I used to deal with Johns Radio some 20 to 30 years ago, at the height of his empire he had 3 old cotton mills stuffed to the gills with test equipment. If it had ever been made John would have it, and awesomely Pat could tell you which mill - floor - room - shelf you would find it on, all from memory. Wandering round the mills was like being Aladdin's cave.
Cheers
Dave
G8KHU

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.


--
Paul Bicknell G8KFW   South Coast UK


Re: Tuesday night?? 9Cm

Paul G8AQA
 

Hi Ben,

I wonder if it is worth another try?  I will have an extra 2m antenna height and a good front end filter.

Better either before the contest or late on when things have calmed down.

73
Paul G8AQA

On 20/04/2020 09:16, militaryoperator via groups.io wrote:
Hoping to have a play Tues night on 23, anyone playing who has 9Cms as well? just wondered if it would be worth my time putting it on the mast. 

Ben IO82UJ


Re: RF Test Equip- Who's still Going?

Conrad, PA5Y
 

That was later on. When he was at Birkenshaw you had to brave the dogs which were partial to RF infused individuals or so it seemed to me. John kept stuff forever and never learned when the value reduced. Consequently he had a lot of stuff that he would never sell. In his heyday it was mind boggling. I saw of 50 Bird model 43s in a basket once. 

Pat was great!

73

Conrad PA5Y


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Dave G8KHU via groups.io <david@...>
Sent: 20 April 2020 13:40
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?
 
Hi Paul

It would be useful to know if there are dealers who still deal in the older kit. There are many who deal in modern second user kit - but at modern kit prices.
The any one I know for definite that deals in older kit and is still a going concern is Stewart of Reading.
I used to deal with Johns Radio some 20 to 30 years ago, at the height of his empire he had 3 old cotton mills stuffed to the gills with test equipment. If it had ever been made John would have it, and awesomely Pat could tell you which mill - floor - room - shelf you would find it on, all from memory. Wandering round the mills was like being Aladdin's cave.
Cheers
Dave
G8KHU


Re: RF Test Equip- Who's still Going?

Dave G8KHU
 

Hi Paul

It would be useful to know if there are dealers who still deal in the older kit. There are many who deal in modern second user kit - but at modern kit prices.
The any one I know for definite that deals in older kit and is still a going concern is Stewart of Reading.
I used to deal with Johns Radio some 20 to 30 years ago, at the height of his empire he had 3 old cotton mills stuffed to the gills with test equipment. If it had ever been made John would have it, and awesomely Pat could tell you which mill - floor - room - shelf you would find it on, all from memory. Wandering round the mills was like being Aladdin's cave.
Cheers
Dave
G8KHU


Re: RF Test Equip- Who's still Going?

Paul G8KFW
 

Hi Jim

 

Dependent on your space and requirements

 

As you can have a lot of fun with 10 Ghz from simple Gunn oscillators to complete phase locked systems

Going back in time was the HP 140 system  that went to 18 Ghz  and 24 GHz using an external mixer

and  as this uses 3 modules for the basic system and dues not incorporate a microprocessor  it should be easily repaired when required

 

You can get new items that clime to do the job but using high quality equipment is another approach

 

Suggest you make a list of your requirements  with a budget at the bottom other wise things’ can get expensive

 

Eg a frequency counter for  1 Ghz at £75 /  10 Ghz for £250  /  24 Ghz for £600

 

 

regarding to your statement

Having a Google around the other day I noticed a lot of the old guys are gone... and I'm not sure which ads are even still valid.

 

There are still at lest 6  second user test equipment suppliers in the UK  that I Talk to on a regular bases

 

Glad to help of line once you have made your list  

 

Regards Paul    tel 07719 208048

 

PS you didn’t give your location

 


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of geoffrey pike via groups.io
Sent: 20 April 2020 09:12
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] RF Test Equip- Who's still Going?

 

Hi JIm,

By all means look on Ebay, however be careful who you deal with.

Also for 10 GHz you need to ask yourself do i need an all singing dancing thing that has Hz resolution or do you need just

to have a "look". The reason for this is cost.

Stewart of Reading are a thought.

Probably the cheapest HP approach is the HP8559, but it doesnt have a YIG preselector, however depending on your buget

you may what something more modern.

cheers

Geoff

GI0GDP

 

On Monday, 20 April 2020, 02:30:01 BST, jimbod1973 . <jimbod1973@...> wrote:

 

 

Hi Folks,
Since I now have some time to actually do stuff and sort things out for the first time in some (many) years I've decided to dust off some old 3cm gear. This is basically a G3WDG TRVX with a 10W TWT and 60cm Andrews dish. I've realised one of the first things I could do with that I've not got is an SA that covers 10GHz. Having a google around the other day I noticed a lot of the old guys are gone... and I'm not sure which ads are even still valid.

What's the best approach these days - have a look on ebay?

Thanks
Jim
G0MPP

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--
Paul Bicknell G8KFW   South Coast UK


Tuesday night?? 9Cm

militaryoperator
 

Hoping to have a play Tues night on 23, anyone playing who has 9Cms as well? just wondered if it would be worth my time putting it on the mast. 

Ben IO82UJ


Re: RF Test Equip- Who's still Going?

geoffrey pike
 

Hi JIm,
By all means look on Ebay, however be careful who you deal with.
Also for 10 GHz you need to ask yourself do i need an all singing dancing thing that has Hz resolution or do you need just
to have a "look". The reason for this is cost.
Stewart of Reading are a thought.
Probably the cheapest HP approach is the HP8559, but it doesnt have a YIG preselector, however depending on your buget
you may what something more modern.
cheers
Geoff
GI0GDP

On Monday, 20 April 2020, 02:30:01 BST, jimbod1973 . <jimbod1973@...> wrote:


Hi Folks,
Since I now have some time to actually do stuff and sort things out for the first time in some (many) years I've decided to dust off some old 3cm gear. This is basically a G3WDG TRVX with a 10W TWT and 60cm Andrews dish. I've realised one of the first things I could do with that I've not got is an SA that covers 10GHz. Having a google around the other day I noticed a lot of the old guys are gone... and I'm not sure which ads are even still valid.

What's the best approach these days - have a look on ebay?

Thanks
Jim
G0MPP


RF Test Equip- Who's still Going?

jimbod1973 .
 

Hi Folks,
Since I now have some time to actually do stuff and sort things out for the first time in some (many) years I've decided to dust off some old 3cm gear. This is basically a G3WDG TRVX with a 10W TWT and 60cm Andrews dish. I've realised one of the first things I could do with that I've not got is an SA that covers 10GHz. Having a google around the other day I noticed a lot of the old guys are gone... and I'm not sure which ads are even still valid.

What's the best approach these days - have a look on ebay?

Thanks
Jim
G0MPP

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