Date   

October SBMS Newsletter

rein0zn@...
 

Hello all,

The October 2016 SBMS Newsletter is available here:

http://www.ham-radio.com/sbms/newsletters/2016nwsltrs/10sbms2016.pdf

Thanks much Walter.


73 Rein W6SZ


Re: Elecraft KX3 and DB6NT Transverters

Terry G4UEM
 



Hi all, 

Regarding my original post, I can only assume that nobody on the reflector is interested in using their Elecraft KX3 with DB6NT Transverter. I have found out some further information, if anybody is interested please feel free to contact me direct.

Regards
Terry
G4UEM


A Twisted (WG17) Request

Christopher Bartram <cbartram@...>
 

I'm looking to buy, or swap, a 90 degree, inline twist (not a bend ...) for WG17/WR75/R120, hopefully about 150 - 200mm long, with 4-hole flanges. Can anyone help?

Vy 73

Chris
GW4DGU
--


Re: 24GHZ today?

mike G6TRM
 


My thanks to all that had or tried to have a QSO with me today. all were on 10GHz. My first attempts for a QSO on 24Ghz failed but I am unsure if it was equipment issues or simply the distances attempted were too far. I suspect it might be the former as M1CRO/p was an enormous signal on 10Ghz but nothing at all was heard on 24Ghz.
Can anyone suggest an inexpensive but proven method to generate a 24Ghz test signal to get my on the right path.
 
Also, can anyone help me with ballpark figures for the LO drive levels to the TX and RX modules in a transverter made with Alcatel modules?.
 
cheers
 
Mike G6TRM 
 
 

 ie ----- Original Message -----
Sent: Sunday, October 02, 2016 9:08 PM
Subject: Re: [ukmicrowaves] 24GHZ today?

 

Should have watched the weather forecast Ian - was lovely and sunny in Walton today! 
Unfortunately Chris 1500km wasn't achieved this year and yes UK activity wasn't good but also activity from PA has declined somewhat.....
Hope next year will be better for you. 
73. Tony NBS


On 2 Oct 2016, at 14:14, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

This weekend was quite a washout in Northfleet I was going to try my new 23cm transverter out yesterday see what i heard and try work a few and got totally drenched for the Hour or so I went out.
 
Hey ho
 
Ian
2E0IJH
 
Sent: Sunday, October 02, 2016 at 1:53 PM
From: "Christopher Bartram cbartram@... [ukmicrowaves]" <ukmicrowaves@...>
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] 24GHZ today?
 

I'd planned to be out on both 10 and 24GHz from IO82en with reasonably
potent gear on both bands, but a very sad family event has made that
impossible.

This year has been a total disaster as far as microwave contest
involvement has been involved, and I hope that next year will be less so ...

On a less personal level, it would be good to see a lot more UK
involvement in the IARU October UHF and up Contest. We seem to have
become very inward looking as far as microwave contests are concerned,
yet the first weekend of October has always been a very likely time to
experience good tropo. In last year's event, 10GHz opened up to PA0 and
ON from mid-Wales, with several beacons at around 700km audible. In the
past I've worked (from my old QTH in IO71) contest stations at >1500km
on 1.3GHz in the same event.

Of course, next year's contest will now be a total washout!

Vy 73

Chris
GW4DGU
 


Re: 24GHZ today?

Tony G4NBS
 

Should have watched the weather forecast Ian - was lovely and sunny in Walton today! 
Unfortunately Chris 1500km wasn't achieved this year and yes UK activity wasn't good but also activity from PA has declined somewhat.....
Hope next year will be better for you. 
73. Tony NBS


On 2 Oct 2016, at 14:14, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

This weekend was quite a washout in Northfleet I was going to try my new 23cm transverter out yesterday see what i heard and try work a few and got totally drenched for the Hour or so I went out.
 
Hey ho
 
Ian
2E0IJH
 
Sent: Sunday, October 02, 2016 at 1:53 PM
From: "Christopher Bartram cbartram@... [ukmicrowaves]" <ukmicrowaves@...>
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] 24GHZ today?
 

I'd planned to be out on both 10 and 24GHz from IO82en with reasonably
potent gear on both bands, but a very sad family event has made that
impossible.

This year has been a total disaster as far as microwave contest
involvement has been involved, and I hope that next year will be less so ...

On a less personal level, it would be good to see a lot more UK
involvement in the IARU October UHF and up Contest. We seem to have
become very inward looking as far as microwave contests are concerned,
yet the first weekend of October has always been a very likely time to
experience good tropo. In last year's event, 10GHz opened up to PA0 and
ON from mid-Wales, with several beacons at around 700km audible. In the
past I've worked (from my old QTH in IO71) contest stations at >1500km
on 1.3GHz in the same event.

Of course, next year's contest will now be a total washout!

Vy 73

Chris
GW4DGU
 


Re: small 1.2ghz yagis

Dex W4DEX
 

Sam Jewell @G4DDKSam [ukmicrowaves] wrote:

Although I haven't tried one of those particular antennas, friends have bought the 2.4GHz equivalent and asked me to test them.
Performance was so poor that moving a large metal plate in front of the yagi failed COMPLETELY to show any reflection on an attached VNA. You really have to be dreadful to do that!
I fell for one of those from an eBay seller a while back. I quickly found a single patch antenna from a cheap X-10 wireless camera works better. Mounting hardware and coax removed. The remains now in scrap aluminum bin.

Dex


Re: small 1.2ghz yagis

SAM JEWELL
 

Sensible, I think, Ian.
Although I haven't tried one of those particular antennas, friends have bought the 2.4GHz equivalent and asked me to test them.
Performance was so poor that moving a large metal plate in front of the yagi failed COMPLETELY to show any reflection on an attached VNA. You really have to be dreadful to do that!
The main fault seems to have been that no boom correction factor had been applied although the elements went through the boom. There was no form of balun or other attempt to match the input, resulting in a very poor input return loss.
I suspect it was a cynical attempt to capture a non-wireless savvy, but growing, market without any form of product testing.

The boom was useful for subsequently stirring a pot of emulsion paint, however.........

If anyone is interested, I'll take some of the WA5VJB 23cm PCB yagis and Big Wheels to the RSGB Convention next weekend. I'm not there to trade, but don't mind bringing a few WA5VJB antennas. If there is any others you might want, let me know beforehand. Off reflector, please.

It would be nice if a few microwavers could get to my transverter talk on Saturday afternoon. Not strictly microwave. I prefer not to talk to an empty room!


73 de Sam


Sent from my DDKpad

On 2 Oct 2016, at 19:23, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

I wouldn't actually buy them sam, I just happen to know where a couple are that were used for a video link, But other people have also said how bad they are so wont bother removing them. and look elsewhere.
 
Ian
2E0IJH
 
Sent: Sunday, October 02, 2016 at 7:13 PM
From: "Sam Jewell jewell@... [ukmicrowaves]" <ukmicrowaves@...>
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] small 1.2ghz yagis
 

 

If they are anything like the 2.4GHz WiFi ones, I wouldn't waste your money unless you like spreading the RF in all directions. At least that small part that the feed accepts!
Buyer beware!!!!.
 
73 de Sam, G4DDK


Sent from my DDKpad

On 2 Oct 2016, at 18:34, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
 

 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 

 

 


Re: small 1.2ghz yagis

ian hope (2E0IJH)
 

I wouldn't actually buy them sam, I just happen to know where a couple are that were used for a video link, But other people have also said how bad they are so wont bother removing them. and look elsewhere.
 
Ian
2E0IJH

 
Sent: Sunday, October 02, 2016 at 7:13 PM
From: "Sam Jewell jewell@... [ukmicrowaves]"
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] small 1.2ghz yagis
 

 

If they are anything like the 2.4GHz WiFi ones, I wouldn't waste your money unless you like spreading the RF in all directions. At least that small part that the feed accepts!
Buyer beware!!!!.
 
73 de Sam, G4DDK


Sent from my DDKpad

On 2 Oct 2016, at 18:34, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
 

 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 

 

 


Re: small 1.2ghz yagis

SAM JEWELL
 

I deliberately didn't mention I had some, but yes, Kent has left a quantity with me and they are quite popular.
73 de Sam



Sent from my DDKpad

On 2 Oct 2016, at 19:10, Peter Torry peter.torry@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

Ian,

Have a look at http://www.wa5vjb.com/  -  they are available from G4DDK.com

73

Peter

G3SMT


On 02/10/2016 17:34, ian ian@... [ukmicrowaves] wrote:
 
Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian


Re: small 1.2ghz yagis

GORDONJ REASON <gordonj.reason@...>
 

Yagi ...... I would suggest , made to look pretty .......................

On 02 October 2016 at 18:34 "ian ian@... [ukmicrowaves]" <ukmicrowaves@...> wrote:

 

 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
Has anyone any experience with something like these, http://www.ebay.co.uk/itm/1-2GHz-GSM-Yagi-Antenna-12DBi-1200MHz-with-N-Female-Jack-Moutning-kits-included-/290514629348?hash=item43a40572e4:m:mSsgVeISQ3bKjiNr_2i5Wmg.
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 

 


 


 


Re: small 1.2ghz yagis

SAM JEWELL
 

If they are anything like the 2.4GHz WiFi ones, I wouldn't waste your money unless you like spreading the RF in all directions. At least that small part that the feed accepts!
Buyer beware!!!!.

73 de Sam, G4DDK


Sent from my DDKpad

On 2 Oct 2016, at 18:34, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 


Re: small 1.2ghz yagis

Peter G3SMT
 

Ian,

Have a look at http://www.wa5vjb.com/  -  they are available from G4DDK.com

73

Peter

G3SMT


On 02/10/2016 17:34, ian ian@... [ukmicrowaves] wrote:
 
Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian


Re: small 1.2ghz yagis

ian hope (2E0IJH)
 

Is that the one that comes with the SG ones? If so that would prob do the trick as I have the one that came with mine
 
Ian
2E0IJH

 
Sent: Sunday, October 02, 2016 at 6:49 PM
From: "Tim Hague m0afj@... [ukmicrowaves]"
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] small 1.2ghz yagis
 

 

Ian, I have a pcb yagi that came with my new Transverter if it's any use to you?

Best Regards
Tim Hague
 

On 2 Oct 2016, at 18:34, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
 

 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 

 

 


Re: small 1.2ghz yagis

Andy G4JNT
 

Build one.  Like this :

Hard drawn copper wire for the elements (you could use semi-rigid)
Brass tube for the boom
Dimensions from th eDL6WU design software
1/2 wave balun in semi rigid
RL around 17dB without bothering to tweak things

'jnt


On 2 October 2016 at 18:34, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 



Re: small 1.2ghz yagis

Tim Hague M0AFJ
 

Ian, I have a pcb yagi that came with my new Transverter if it's any use to you?

Best Regards
Tim Hague


On 2 Oct 2016, at 18:34, ian ian@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 


small 1.2ghz yagis

ian hope (2E0IJH)
 

Hi all need some small yagis to do some local testing of 23cm's, were just going to work across a local park. 
 
Has anyone any experience with something like these, http://www.ebay.co.uk/itm/1-2GHz-GSM-Yagi-Antenna-12DBi-1200MHz-with-N-Female-Jack-Moutning-kits-included-/290514629348?hash=item43a40572e4:m:mSsgVeISQ3bKjiNr_2i5Wmg.
 
I ask as have access to a couple that were used on a video system.
 
Ian
2E0IJH
 


Re: 24GHZ today?

ian hope (2E0IJH)
 

This weekend was quite a washout in Northfleet I was going to try my new 23cm transverter out yesterday see what i heard and try work a few and got totally drenched for the Hour or so I went out.
 
Hey ho
 
Ian
2E0IJH

 
Sent: Sunday, October 02, 2016 at 1:53 PM
From: "Christopher Bartram cbartram@... [ukmicrowaves]"
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] 24GHZ today?
 

I'd planned to be out on both 10 and 24GHz from IO82en with reasonably
potent gear on both bands, but a very sad family event has made that
impossible.

This year has been a total disaster as far as microwave contest
involvement has been involved, and I hope that next year will be less so ...

On a less personal level, it would be good to see a lot more UK
involvement in the IARU October UHF and up Contest. We seem to have
become very inward looking as far as microwave contests are concerned,
yet the first weekend of October has always been a very likely time to
experience good tropo. In last year's event, 10GHz opened up to PA0 and
ON from mid-Wales, with several beacons at around 700km audible. In the
past I've worked (from my old QTH in IO71) contest stations at >1500km
on 1.3GHz in the same event.

Of course, next year's contest will now be a total washout!

Vy 73

Chris
GW4DGU
 


Re: 24GHZ today?

Christopher Bartram <cbartram@...>
 

I'd planned to be out on both 10 and 24GHz from IO82en with reasonably potent gear on both bands, but a very sad family event has made that impossible.

This year has been a total disaster as far as microwave contest involvement has been involved, and I hope that next year will be less so ...

On a less personal level, it would be good to see a lot more UK involvement in the IARU October UHF and up Contest. We seem to have become very inward looking as far as microwave contests are concerned, yet the first weekend of October has always been a very likely time to experience good tropo. In last year's event, 10GHz opened up to PA0 and ON from mid-Wales, with several beacons at around 700km audible. In the past I've worked (from my old QTH in IO71) contest stations at >1500km on 1.3GHz in the same event.

Of course, next year's contest will now be a total washout!

Vy 73

Chris
GW4DGU


Re: 24GHZ today?

Tony G4NBS
 

Good luck Mike - M1CRO will watch for you on KST

Regards
Tony G4NBS


On 2 Oct 2016, at 11:05, 'mike' mb.golfmad@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 



I should be out about 12.30 ,13.00 for my first tests/ trials on 24GHz, hopefully will be on KST
 
Mike G6TRM
----- Original Message -----
Sent: Sunday, October 02, 2016 10:49 AM
Subject: Re: [ukmicrowaves] 24GHZ today?

 

Don't forget G3ZEZ John!



On 2 Oct 2016, at 09:52, g4bao john@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

Anyone going out /P on 24GHz today for the big EU contest?

M1CRO/P and I are getting very lonely up there!

73
John


Re: 24GHZ today?

mike G6TRM
 


I should be out about 12.30 ,13.00 for my first tests/ trials on 24GHz, hopefully will be on KST
 
Mike G6TRM

----- Original Message -----
Sent: Sunday, October 02, 2016 10:49 AM
Subject: Re: [ukmicrowaves] 24GHZ today?

 

Don't forget G3ZEZ John!



On 2 Oct 2016, at 09:52, g4bao john@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

Anyone going out /P on 24GHz today for the big EU contest?

M1CRO/P and I are getting very lonely up there!

73
John