Date   

24ghz feedhorn wanted

Steve G4HTZ
 

Starting to collect parts for 24ghz 

Looking for a feed for an offset dish ...sma preferably input or wr42 in which case would need a sma to waveguide adaptor as well .

If you might have anything going spare or from that abandoned 24ghz project , please reply off reflector 

Feed can also be dualband 10/24ghz


Thanks

Steve G4HTZ JO01JN 


Re: WR34 waveguide mixer question

Mike Willis
 

I would try it and see. It might well give some indication. The band is determined by the waveguide. WR34 will overmode at 47GHz but I expect something will get through.

Unfortunately, my signal generator only goes to 40GHz and my LMDS kit only 43GHz. I suppose testing with it could at least rule it out as if it doesn't work at 40GHz it's unlikely to work at 47GHz.

For a 47 GHz test source, what about those multipliers we found at Friedrichshafen? I thought there were some for 47GHz there. I didn't pick one up, just the 12GHz LOs. I know Henning was testing the 38GHz modules and results were good.

The I3OPW website is worth a look for parts.

Mike


Re: WR34 waveguide mixer question

KENT BRITAIN
 

Should work fine.   It's really a function of the diode.
If the diode is good to 47+ GHz you can use it in a WG16/WR90 mixer to
look at signals.   WA5VJB/G8EMY



From: "g4bao john@... [ukmicrowaves]"
To: "Ukmicrowaves (ukmicrowaves@...)" ; microwave@...
Sent: Wednesday, June 20, 2018 1:53 PM
Subject: [ukmicrowaves] WR34 waveguide mixer question

 
Hi all
Anyone ever used a WR34  (22.00 to 33 GHz) Waveguide mixer at 47GHz with any success?
I have a Marki M97143 WR43 harmonic mixer that I currently use at 24GHz (2nd harmonic LO) that I'd like to  try at 47GHz as a 4th Harmonic mixer.
No test gear or signal source yet for 47GHz yet so no easy way to try it. It would be used in front of my Spectrum analyser.  

I'd be interested in your results if you have

73
John



WR34 waveguide mixer question

g4bao
 

Hi all
Anyone ever used a WR34  (22.00 to 33 GHz) Waveguide mixer at 47GHz with any success?
I have a Marki M97143 WR43 harmonic mixer that I currently use at 24GHz (2nd harmonic LO) that I'd like to  try at 47GHz as a 4th Harmonic mixer.
No test gear or signal source yet for 47GHz yet so no easy way to try it. It would be used in front of my Spectrum analyser.  

I'd be interested in your results if you have

73
John


Re: Activity List for the UK Microwave Group 5.7GHz/10GHz Contests - Sunday 24th June

Keith GW3TKH
 

Wx dependent plan for Sunday:
Callsign: GW3TKH/P
Locator: IO81LS
Bands: 5.7GHz 10W 1m dish 
             10GHz  10W 1m dish 
Talkback: ON4KST, 144.390, 07762885015
Times: From about 0900 BST


Callsign: GW4HQX/P
Locator: IO81LS
Bands: 5.7GHz 15W 23dBi flat panel
             10GHz  200mW 40cm dish 
Talkback: ON4KST, 144.390, 07762885015
Times: Various

73
Keith GW3TKH






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Re: G3WDG006

peter_harston@...
 

Thanks very much to everybody for your suggestions and information.

I now have a full set of documentation for the kit.

73

Peter GW4JQP


Re: Activity List for the UK Microwave Group 5.7GHz/10GHz Contests - Sunday 24th June

Neil Smith G4DBN
 

Call: G4DBN
Locator: IO93NR08EO
Band: 10GHz only ssb/cw/digimodes (+WBFM receive only) 8W to 90cm dish
Talkback: KST/Zello/SMS/voice 07799035034 or 144.390 at a push
Times: Various throughout.  If I am active, I'll be on Zello and KST
Neil


Re: Activity List for the UK Microwave Group 5.7GHz/10GHz Contests - Sunday 24th June

john.telegraph
 

Sunday

 

Callsign: M0XIG/P

Locator: IO90LU  Portsdown Hill, Hampshire

Band: 10 GHz only ssb and cw  Sky dish

Talkback: 144.390 MHz / KST / 07498599097

Times: Various 10 a.m. to 2 p.m.

 

73

 

 

John M0XIG

 

From: ukmicrowaves@... [mailto:ukmicrowaves@...]
Sent: 16 June 2018 16:33
To: ukmicrowaves@...
Subject: [ukmicrowaves] Activity List for the UK Microwave Group 5.7GHz/10GHz Contests - Sunday 24th June

 

 

As I will be in transit at the end of next week with limited email
access, I won't be able to assemble an activity list for this event.
Please post details of your plans so others can see who will be around
on Sunday next week.

73

John G3XDY
UKuG Contest Manager

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Re: Activity List for the UK Microwave Group 5.7GHz/10GHz Contests - Sunday 24th June

geoffrey pike
 

The weather forecast is good (apparently)!

Callsign: GI0GDP/P
Locator: IO74BR40KS, but may move north
Bands: 5.7 and 10 GHz and ATV, Sky Zone 2 dishes,4W,1W, and 2 Watts resp.
Time:11:00 to 14:00 clock time
Talkback: 07817 177907
cheers
Geoff
GI0GDP

On Saturday, 16 June 2018, 16:35:01 BST, G3XDY g3xdy@... [ukmicrowaves] wrote:


 

As I will be in transit at the end of next week with limited email
access, I won't be able to assemble an activity list for this event.
Please post details of your plans so others can see who will be around
on Sunday next week.

73

John G3XDY
UKuG Contest Manager

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


Re: Activity List for the UK Microwave Group 5.7GHz/10GHz Contests - Sunday 24th June

G1DFL
 

Hope to make a few contacts this Sunday from the Chiltern Ridge.


Callsign:   G1DFL/P
Locator:    IO91MP (Xmas Common), roving to IO91OQ (Lacey Green)
Bands:      5.7GHz WBFM - 2W, 60cm grid dish (listening Ch33, 5665MHz)
                10GHz SSB - 0.2W, 60cm offset dish.
                10GHz LNB & SDR for local HB100 WBFM tests.
Talkback:  1) Simple 144.390MHz SSB, 2) ON4KST, 3) 07713 432632 (Voice, SMS, WhatsApp, Zello: shf_chat)
Times:      Approx 10am-11.30 then 12-2pm


Regards..Pete
G1DFL


On Saturday, June 16, 2018 4:35 PM, "G3XDY g3xdy@... [ukmicrowaves]" wrote:


 
As I will be in transit at the end of next week with limited email
access, I won't be able to assemble an activity list for this event.
Please post details of your plans so others can see who will be around
on Sunday next week.

73

John G3XDY
UKuG Contest Manager

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




Re: talk back

Andy G4JNT
 

Just been playing from a well known south coast /P site with weak 3G (Lane End) with Zello from a notebook via my antiquated Iphone-4 working as a WI-FI bridge.   Seems to work fine with the low throughput of Zello voice traffic.

KST was a bit difficult, used the same way.

And the sun on the screen, even the low evening sun at the moment, does make any text based comms solution very unpleasant.  I'm typing this crouched in the shadow of the roadside bushes

Lets see how long it takes to send this email with just one blob of 3G showing on the Iphone

On 19 June 2018 at 09:58, Jules jules@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

So far, the requirements seem to be:

Accessible from internet, or over air.
Accessible with non specialised radios (ideally the same one that you
may also have for your SSB station).
Limited access online to licenced amateurs only.
Likely to be heard/seen by non microwavers, to advertise our group.
PTT style operation.
Multiple channels, but that are open for scrutiny.

That still sounds like Echolink to me. That ticks all the boxes.

It is an older simple tech, not a new sexy toy. But it is an existing
network.
It will be easy for us to expand RF coverage to geographical areas that
interest us. As we only need coverage where there is no mobile phone
internet. And if we get friendly stations to host an attended node for
us, for the duration of a contest,  it should make the licencing simpler.
Existing 2mtr stations can use it (with the addition of a vertical
antenna) and new stations only need to equip with a cheap FM radio.



Re: Scottish Microwave Round Table 2018 Call for presentations

Pete - GM4BYF
 

I won't know if I can attend, until July. Could be on for a talk if able to come.


73
Pete GM4BYF
On 19/06/18 12:39, brian.flynn@... [ukmicrowaves] wrote:

 

The Scottish Microwave Round Table will be held on Saturday 3rd November in the Museum of Communication in Burntisland in Fife. As a departure for previous practice we are making a call for presentations so if you have a project or a subject that you feel would be of interest to the  audience please volunteer a talk. It is hoped that this will provide a wide ranging varied programme of talks.
Details are at:
http://www.gmroundtable.org.uk/

73s Brian  GM8BJF.








Re: GB3RCM , test transmission as G6GXK rochdale beaming SSE

David Wrigley <zen130696@...>
 

beacon not unattended.  Beacon switched off 17:25

David G6GXK

On 19/06/2018 14:38, David Wrigley zen130696@zen.co.uk [ukmicrowaves] wrote:
hello all

I am currently testing out the beacon intended for GB3RCM Drum Hill, Derby.

It is currently at my home in rochdale operating as G6GXK.  The antenna
is a horn pointing SSE 165deg mag, running 5W

5760.870 MHz

Any receptions or observations gratefully received.


Regards

David G6GXK



------------------------------------
Posted by: David Wrigley <zen130696@zen.co.uk>
------------------------------------


------------------------------------

Yahoo Groups Links




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GB3RCM , test transmission as G6GXK rochdale beaming SSE

David Wrigley <zen130696@...>
 

hello all

I am currently testing out the beacon intended for GB3RCM Drum Hill, Derby.

It is currently at my home in rochdale operating as G6GXK.  The antenna is a horn pointing SSE 165deg mag, running 5W

5760.870 MHz

Any receptions or observations gratefully received.


Regards

David G6GXK


Scottish Microwave Round Table 2018 Call for presentations

Brian Flynn GM8BJF
 

The Scottish Microwave Round Table will be held on Saturday 3rd November in the Museum of Communication in Burntisland in Fife. As a departure for previous practice we are making a call for presentations so if you have a project or a subject that you feel would be of interest to the  audience please volunteer a talk. It is hoped that this will provide a wide ranging varied programme of talks.
Details are at:
http://www.gmroundtable.org.uk/

73s Brian  GM8BJF.







Re: talk back

Jules G0NZO
 

So far, the requirements seem to be:

Accessible from internet, or over air.
Accessible with non specialised radios (ideally the same one that you may also have for your SSB station).
Limited access online to licenced amateurs only.
Likely to be heard/seen by non microwavers, to advertise our group.
PTT style operation.
Multiple channels, but that are open for scrutiny.

That still sounds like Echolink to me. That ticks all the boxes.

It is an older simple tech, not a new sexy toy. But it is an existing network.
It will be easy for us to expand RF coverage to geographical areas that interest us. As we only need coverage where there is no mobile phone internet. And if we get friendly stations to host an attended node for us, for the duration of a contest,  it should make the licencing simpler.
Existing 2mtr stations can use it (with the addition of a vertical antenna) and new stations only need to equip with a cheap FM radio.


Re: talk back

Pete - GM4BYF
 

Coverage in GM land will be extremely limited and of no use for any dxepeditions I have in mind.

73
Pete GM4BYF
On 19/06/18 08:00, 'Gary (M1EGI)' gary.m1egi@... [ukmicrowaves] wrote:

 
One thing I would just like to point out, the reason I suggested DMR as an option is that not only can it be used as a national network, but also European wide/globally. 
Not bad for a few watts from a handheld! - but as others have pointed out, only if you are range of a connected repeater. 

But as Chris suggests, the risk is dilution rather than a solution. 

73s Gary M1EGI 



Re: talk back

Gary M1EGI
 

One thing I would just like to point out, the reason I suggested DMR as an option is that not only can it be used as a national network, but also European wide/globally. 
Not bad for a few watts from a handheld! - but as others have pointed out, only if you are range of a connected repeater. 

But as Chris suggests, the risk is dilution rather than a solution. 

73s Gary M1EGI 


Re: talk back

Barry Chambers
 

Andy

Many thanks

73

Barry, G8AGN
On 18/06/2018 20:41, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote:

 
If your account has been created OK, and you're signed in, press F7 and say something - ideally your name and callsign as you would normally do on air.
Initially only the moderators will hear you. They will then authorise you for full talk access.
(And the something you said will be replayed so you and everyone else will hear it back)


On 18 June 2018 at 20:29, Barry Chambers b.chambers@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

Andy

I've signed in. What do I do next?

73

Barry, G8AGN
On 18/06/2018 20:26, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote:
 
Works great.  The complete installation, setup and authorisation (first chat) took less than five minutes.
The PTT on the PC version, BTW, is F7


On 18 June 2018 at 20:17, Andy Talbot <andy.g4jnt@...> wrote:
Wasn't looking in the right place - found it now



On 18 June 2018 at 20:02, Andy Talbot <andy.g4jnt@...> wrote:
I've installed Zello for PC, but can't find the "SHF Chat" channel set up at RAL yesterday
Is it live ?



On 18 June 2018 at 19:42, Denis Stanton denis.stanton@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

To all
If you don’t give it a try nobody will know what the highs and lows are
You don’t need to buy a new radio
Zello will work with any android or IOS phone and even on a windows laptop
We have started a chat channel which will be the starting point and then move on to having other channels for use as talk back
What’s to lose it’s all free and doesn’t cost anything only your data allowance and it’s very low usage.
Hope to hear you on there soon
Denis G0OLX

Sent from my iPhone








Re: talk back

Chris Bartram G4DGU
 

I'm not necessarily opposed to using some form of Internet telephony for talkback within the UK, but before rushing like a crowd of lemmings to use the 'latest'  'technology', just because it's there, it's worth considering the effects of dilution caused by the use of multiple talkback systems. We have already a very effective international, radio amateur owned and operated talkback system in 'KST, and it would be pretty crass to abandon it for a proprietary system, which is doubtless looking for ways to squeeze the maximum financial return from its efforts.

I agree that DMR isn't necessarily a Good Idea. As I understand it, and I don't use it, as it's a toy I can't justify at home, and I don't operate /M for safety reasons,  DMR has the potential to operate as a national network. Microwaves, though, aren't just a domestic interest. There's a lot more activity beyond the shores of the UK - we're not alone on this planet - and the use of DMR is a great way of confirming suspicions of the lack of ambition of many microwavers to our licencing authority.

I'm by no means opposed to the use of 2m talkback. However, while it was very useful in the early days microwaving, and still provides a useful facility for those wishing to make microwave contacts below about 200km eg. on mmWaves and ATV, it is of very questionable use for DX operation on 10GHz and below, simply because, as others have noted, microwaves can easily go a lot further.

73

Chris

G4DGU

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