Date   

Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

Martyn G3UKV
 

Callsign G3ZME/P
Locator: IO82QL
Bands: 5.7, 10 and 24 GHz
Talkback: 144.175 SSB (preferred) + KST in afternoon
Times: ~ 1000-1600 utc

73 Martyn G3UKV

On 21/07/2013 23:21, G3XDY wrote:
 

The third of the summer series of 5.7GHz, 10GHz and 24GHz contests is
coming up next Sunday, 28th July, you can choose any 6 hour time slot
from 0700-1900 BST, either as one continuous period or two segments with
at least an hour's gaps between.

As usual I will collate an activity list, so please send me your
operating plans. Lets hope for some rainscatter to liven things up this
time!

The preferred format is as below:

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
10GHz 10W 60cm dish
Talkback: ON4KST and 144.175MHz
Times: Probably early and late in the day.

73

John G3XDY
UkuG Contest Manager



Reports of r Microwave Europe column in Dubus

John Quarmby
 

The dealine for input for the next Microwave Europe column in Dubus is fast approaching. One area I will be covering in some depth is the recent Ofcom consultation on 2.3 and 3.4GHz, as other European countries are/will be facing the same issues, and a common approach on key allocations should prove beneficial.

I would be keen to include other news as well so please send any snippets and photos to me at my usual email address. Deadline is Wednesday 3rd August.

73

John G3XDY
Microwave Europe joint editor, DUBUS Magazine


GB3NGI on 10GHz

Gordon GI6ATZ
 

Hi All

As well as updating the 2 mtr beacon on Thursday we also installed a new 10 Ghz beacon

The 10GHz beacon is on 10368.895

ERP  is 3dBW

Antenna is a slotted waveguide

Locator is IO65VB


Gordon
GI6ATZ


Re: ERA-1

R Hopkins
 

Hi Geoff

I'm running mine at 9936MHz with 115 ohms total bias resistor and an 8 volt supply as recommended by
the manufacturer. I'm not sure what the current is but 75 mA is the absolute maximum according to
the data sheet. I haven't noticed things getting particularly hot which one thing I would have
checked when I was making the transverter. Best of luck with yours.

Cheers

Roger

On Fri, 26 Jul 2013 17:25:21 +0100 (BST), you wrote:



Hi Roger
Well that is what i plan to use them for also, running them flat out to get the numbers i quoted
and at 75 mA each i think they may not last for ever !
regards
Geoff


________________________________
From: R Hopkins <gw4nos@btinternet.com>
To: ukmicrowaves@yahoogroups.com
Sent: Friday, 26 July 2013, 14:31
Subject: Re: [ukmicrowaves] ERA-1



 
Hi Geoff

I used them to drive the mixers in my 3cMs transverter. They worked perfectly.

Cheers

Roger GW4NOS

On Fri, 26 Jul 2013 14:01:41 +0100 (BST), you wrote:

MiniCircuits dont specify the ERA-1 to 10 GHz but sort of give you the impression it should

produce some useable results at 3cm
So i cascaded 2 onto a piece of RO3003 and measured the following at 10.368 GHz

13 dB forward gain
Psat approx 9 dBm
So it does seem they would be useful at 3cm and they don't cost a fortune
regards
Geoff
GI0GDP


Re: ERA-1

geoffrey pike
 


Hi Roger
Well that is what i plan to use them for also, running them flat out to get the numbers i quoted
and at 75 mA each i think they may not last for ever !
regards
Geoff


From: R Hopkins
To: ukmicrowaves@...
Sent: Friday, 26 July 2013, 14:31
Subject: Re: [ukmicrowaves] ERA-1

 
Hi Geoff

I used them to drive the mixers in my 3cMs transverter. They worked perfectly.

Cheers

Roger GW4NOS

On Fri, 26 Jul 2013 14:01:41 +0100 (BST), you wrote:

>MiniCircuits dont specify the ERA-1 to 10 GHz but sort of give you the impression it should
>
>produce some useable results at 3cm
>So i cascaded 2 onto a piece of RO3003 and measured the following at 10.368 GHz
>
>13 dB forward gain
>Psat approx 9 dBm
>So it does seem they would be useful at 3cm and they don't cost a fortune
>regards
>Geoff
>GI0GDP




Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

Roger Ray
 

John,

Activity as below:

Callsign: G8CUB/P
Locator: IO92XA
Bands: 10GHz 5W 80cm dish
24GHz 1W 80cm dis
Talkback: ON4KST and 144.175MHz
Times: Probably 09.00 - 15.00 BST
KST should work this time...
Phone: 07900 261121 if all else fails.

Roger
G8CUB

--- In ukmicrowaves@yahoogroups.com, G3XDY <g3xdy@...> wrote:

The third of the summer series of 5.7GHz, 10GHz and 24GHz contests is
coming up next Sunday, 28th July, you can choose any 6 hour time slot
from 0700-1900 BST, either as one continuous period or two segments with
at least an hour's gaps between.

As usual I will collate an activity list, so please send me your
operating plans. Lets hope for some rainscatter to liven things up this
time!

The preferred format is as below:

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
10GHz 10W 60cm dish
Talkback: ON4KST and 144.175MHz
Times: Probably early and late in the day.


73

John G3XDY
UkuG Contest Manager


Re: GB3NGI Up and running with JT65B

Graham G3VKV
 

Hi all, good sig here at 448km 73 Graham

132600 8 -14 2.1 -5 1 * GB3NGI IO65VB 1 0
132800 9 -11 2.1 -3 3 * GB3NGI IO65VB 1 0
133000 1 -9 2.1 -3 3 * GB3NGI IO65VB 1 0


Re: ERA-1

R Hopkins
 

Hi Geoff

I used them to drive the mixers in my 3cMs transverter. They worked perfectly.

Cheers

Roger GW4NOS

On Fri, 26 Jul 2013 14:01:41 +0100 (BST), you wrote:

MiniCircuits dont specify the ERA-1 to 10 GHz but sort of give you the impression it should

produce some useable results at 3cm
So i cascaded 2 onto a piece of RO3003 and measured the following at 10.368 GHz

13 dB forward gain
Psat approx 9 dBm
So it does seem they would be useful at 3cm and they don't cost a fortune
regards
Geoff
GI0GDP


ERA-1

geoffrey pike
 

MiniCircuits dont specify the ERA-1 to 10 GHz but sort of give you the impression it should
produce some useable results at 3cm
So i cascaded 2 onto a piece of RO3003 and measured the following at 10.368 GHz
13 dB forward gain
Psat approx 9 dBm
So it does seem they would be useful at 3cm and they don't cost a fortune
regards
Geoff
GI0GDP


Re: GB3NGI Up and running with JT65B

David Robinson
 

Producing nmea seems to be the lowest priority task on the Jupiter board. While working with VK6APH on WSPR for the HPSDR we saw up to 11 seconds offset for NMEA

 

The good news is that the binary output from the Jupiter is much more accurate and stable, so we used that without issue

 

Dave

 

G4FRE

 

From: ukmicrowaves@... [mailto:ukmicrowaves@...] On Behalf Of Andy Talbot
Sent: Friday, July 26, 2013 7:05 AM
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] GB3NGI Up and running with JT65B

 




The G3RUH GPSDO used as time and frequency reference for this beacon, is known to be late sometimes with its NMEA data, but this does vary, randomly.   Apparantly, it is a characteristic of the Jupiter type GPS receiver used to deliver the 10kHz reference.

 

 

 

Andy

G4JNT




Re: GB3NGI Up and running with JT65B

Andy G4JNT
 

Yes, I can confirm it is running at DT = 2 seconds. 
Just got one decode at -22dB plus the occasional A/S reflection showing on SpecJT
 
The G3RUH GPSDO used as time and frequency reference for this beacon, is known to be late sometimes with its NMEA data, but this does vary, randomly.   Apparantly, it is a characteristic of the Jupiter type GPS receiver used to deliver the 10kHz reference.
 
Fortunately, being late makes no difference to decoding sensitivity, and can actually be "good".  As JT65 is designed priimarily for EME, the receiver time-search routine is assymmetric to allow for 2s of EME delay.   It covers approximately -1.5s to +6.5s.  So a transmitted signal being late by two or three seconds maximises the chance of hitting a PC clock that is randomly off by a few seconds.
 
I've also just noticed the Tonna just hastily put-up to listen on 144 has a VSWR of something like 4:1 or higher, so summat is very wrong.  Yet it still got 'NGI !
 
Andy
G4JNT


 

On 26 July 2013 12:33, Martin Andrew <martin.andrew@...> wrote:
 

Here, NGI is -14dB and DT=2.0 seconds (P/C time within 0.2 sec) with the occasional
multi path and aircraft scattered signals.
Another (probably more) useful beacon.
Since GB3VHF's site move a few years ago I need tropo or A/S to hear JT65 so NGI could
prove more useful.
 
Martin, GM6VXB
(IO97aq)
 
----- Original Message -----
Sent: Friday, July 26, 2013 9:11 AM
Subject: [ukmicrowaves] GB3NGI Up and running with JT65B

 

GB3NGI on 144.482MHz  is up and running with its new driver transmitting JT65B.
SSB Reference tuning point (so called "Dial Frequency") for WSJT decoding 144.4812
 
G0API reported a decode at -23dB S/N immediately after tuning to the frequency,  without actually being able to hear anything by ear.
 
Andy
G4JNT
 



Re: GB3NGI Up and running with JT65B

GM6VXB
 

Here, NGI is -14dB and DT=2.0 seconds (P/C time within 0.2 sec) with the occasional
multi path and aircraft scattered signals.
Another (probably more) useful beacon.
Since GB3VHF's site move a few years ago I need tropo or A/S to hear JT65 so NGI could
prove more useful.
 
Martin, GM6VXB
(IO97aq)
 

----- Original Message -----
Sent: Friday, July 26, 2013 9:11 AM
Subject: [ukmicrowaves] GB3NGI Up and running with JT65B

 

GB3NGI on 144.482MHz  is up and running with its new driver transmitting JT65B.
SSB Reference tuning point (so called "Dial Frequency") for WSJT decoding 144.4812
 
G0API reported a decode at -23dB S/N immediately after tuning to the frequency,  without actually being able to hear anything by ear.
 
Andy
G4JNT
 


GB3NGI Up and running with JT65B

Andy G4JNT
 

GB3NGI on 144.482MHz  is up and running with its new driver transmitting JT65B.
SSB Reference tuning point (so called "Dial Frequency") for WSJT decoding 144.4812
 
G0API reported a decode at -23dB S/N immediately after tuning to the frequency,  without actually being able to hear anything by ear.
 
Andy
G4JNT
 


Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

Keith GW3TKH
 


Callsigns: GJ3TKH/P & GJ4HQX/P
Locator: IN89WG
Bands: 10GHz 10W 60cm dish
10GHz 1W 45cm dish.
24GHz 0.5W 47cm dish.
Talkback: 144.175MHz. 07762 885015
Times: Throughout the day, when available, weather dependent!


From: G3XDY
To: "ukmicrowaves@..."
Sent: Sunday, 21 July 2013, 22:21
Subject: [ukmicrowaves] Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

 
The third of the summer series of 5.7GHz, 10GHz and 24GHz contests is
coming up next Sunday, 28th July, you can choose any 6 hour time slot
from 0700-1900 BST, either as one continuous period or two segments with
at least an hour's gaps between.

As usual I will collate an activity list, so please send me your
operating plans. Lets hope for some rainscatter to liven things up this
time!

The preferred format is as below:

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
10GHz 10W 60cm dish
Talkback: ON4KST and 144.175MHz
Times: Probably early and late in the day.

73

John G3XDY
UkuG Contest Manager




5.7/10/24GHz contest Sunday

microwaves <microwaves@...>
 

I am planning to be QRV for some of Sunday operating for the first time from my new home QTH at IO93GG. Since I have no VHF or UHF antennas up at present I'm forced to do something I said I never would do .... use only KST for liaison! Fortunately that shouldn't drop out at home like it often does when /P !  

Details: 

G3PHO    Home station  Chesterfield, IO93GG

Times: On and off from 0900z-1600z

10GHz only: 5 watts..60cm offset dish on veranda,c.12ft agl.Good take off from 135 through 180 to 300 degrees.

"Talkback": ON4KST chat room. or phone 01246 260308

Peter, G3PHO


Re: MSF

Andy G4JNT
 

Until recently, (within the last few years, anyway) the need for an external antenna, or at least a good view of the sky was necessary making a small domestic clock non-viable   The latest, third  generation GPS receiver modules that use deep search techniques can now make an indoor antenna a reasonable proposition so a bedside clock does become more feasible.
 
These new receivers (and I only know details about the one I first met, back in 2006 ish designed by QinetiQ) digitise the entire incoming signal from every satellite in view storing the entire set of samples in a large memory, several megs long.  Many seconds worth of it.  That memory space is then searched in three dimensions (Doppler, time and code space /satellite number) to extract everything about every satellite in view to facilitate faster lockup and more reliable tracking.  
 
The result is a receiver that can maintain lock at sensitivities some 20dB below that required for the 2nd generation receivers and can lock up from a warm start in a couple of seconds, with a cold start in something like 30s.  Those QQ modules were designed with the aim for use in Police Tetra radios, but looking at the situation a few years afterwards, it is obvious many manufacturers were working along the same lines as car sat navs, hand helds and the like suddenly became a lot more sensitive and locked up faster.   It was quite a sudden improvement
 
Mind you, tiny MSF receiver modules manufactured in bulk for embedding in clocks only cost pennies.  GPS receivers are many times more expensive, at perhaps a couple of pounds each.  So you're unlikely to see a domestic GPS clock other perhaps than in very specialist shops.   The Junghans MSF one I bought back in 1990 cost something like £60 as far as I recall - that was sold more as a scientific instrument.
 
Andy
G4JNT

 

On 25 July 2013 19:33, Michael Scott <g3lyp@...> wrote:
 

Interesting project for the shack, but not suitable as a bedside alarm!
----- Original Message -----
From: gm4ism@...
Sent: Thursday, July 25, 2013 12:57 PM
Subject: Re: [ukmicrowaves] MSF

 

there is at least one implementation
 
Sent: Thursday, July 25, 2013 11:56 AM
Subject: [ukmicrowaves] MSF
 
 

Many thanks to all who contributed. Andy, a very helpful description of how GPS works, I thought it should provide a very accurate time standard. A project for when I have nothing else to do!
 
Mike, G3LYP

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3209/6518 - Release Date: 07/24/13



Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

Ralph
 

Hello John,
I will be QRV Sunday.
 
Callsign: G4ALY
Locator:  IO70VL
Bands:    5.7GHz 14W 75cm offset dish   
             10GHz 10W 75cm offset dish
Talkback:144.175MHz
Times:     early morning and late in the day.
 
73
Ralph G4ALY


Re: MSF

Michael Scott
 


Interesting project for the shack, but not suitable as a bedside alarm!

----- Original Message -----
From: gm4ism@...
Sent: Thursday, July 25, 2013 12:57 PM
Subject: Re: [ukmicrowaves] MSF

 

there is at least one implementation
 
Sent: Thursday, July 25, 2013 11:56 AM
Subject: [ukmicrowaves] MSF
 
 

Many thanks to all who contributed. Andy, a very helpful description of how GPS works, I thought it should provide a very accurate time standard. A project for when I have nothing else to do!
 
Mike, G3LYP

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3209/6518 - Release Date: 07/24/13


Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

John GM8OTI
 

Thanks Tony, that's good to know.

You'll probably be easier from my second location with the Isle of Man out of the way - I could hear you from that area last October (when I was running 0.7mW!).

73
John GM8OTI

--- In ukmicrowaves@yahoogroups.com, "Anthony Horsfall" <x600@...> wrote:

John,

Check out GB3NGI beacon on 10368.895, locator IO65VB, which became qrv today, bet you receive it really strong from IO74NP

Look for you on Sunday at some point

73 Tony G4CBW

----- Original Message -----
From: John Cooke
To: ukmicrowaves@yahoogroups.com
Sent: Thursday, July 25, 2013 6:31 PM
Subject: [ukmicrowaves] Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July





Callsign: GM8OTI/P
Locator: IO74NP (probably) first session, IO84AT(ish) second session
Bands: 10GHz 1W 40cm dish
Talkback: 144.175MHz and mobile phone 0771 078 6029
Times: Roughly 1000-1200BST, then 1330-1530BST.

Hoping weather is as good as / better than forecast!

73
John GM8OTI

--- In ukmicrowaves@yahoogroups.com, G3XDY <g3xdy@> wrote:
>
> The third of the summer series of 5.7GHz, 10GHz and 24GHz contests is
> coming up next Sunday, 28th July, you can choose any 6 hour time slot
> from 0700-1900 BST, either as one continuous period or two segments with
> at least an hour's gaps between.
>
> As usual I will collate an activity list, so please send me your
> operating plans. Lets hope for some rainscatter to liven things up this
> time!
>
> The preferred format is as below:
>
> Callsign: G3XDY
> Locator: JO02OB
> Bands: 5.7GHz 15W 60cm dish
> 10GHz 10W 60cm dish
> Talkback: ON4KST and 144.175MHz
> Times: Probably early and late in the day.
>
>
> 73
>
> John G3XDY
> UkuG Contest Manager
>


Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

Anthony Horsfall <x600@...>
 

John,
 
Check out GB3NGI beacon on 10368.895, locator IO65VB, which became qrv today, bet you receive it really strong from IO74NP
 
Look for you on Sunday at some point
 
73  Tony  G4CBW
 

----- Original Message -----
From: John Cooke
Sent: Thursday, July 25, 2013 6:31 PM
Subject: [ukmicrowaves] Re: Activity list for the 5.7/10/24GHz Contests on Sunday 28th July

 



Callsign: GM8OTI/P
Locator: IO74NP (probably) first session, IO84AT(ish) second session
Bands: 10GHz 1W 40cm dish
Talkback: 144.175MHz and mobile phone 0771 078 6029
Times: Roughly 1000-1200BST, then 1330-1530BST.

Hoping weather is as good as / better than forecast!

73
John GM8OTI

--- In ukmicrowaves@..., G3XDY wrote:
>
> The third of the summer series of 5.7GHz, 10GHz and 24GHz contests is
> coming up next Sunday, 28th July, you can choose any 6 hour time slot
> from 0700-1900 BST, either as one continuous period or two segments with
> at least an hour's gaps between.
>
> As usual I will collate an activity list, so please send me your
> operating plans. Lets hope for some rainscatter to liven things up this
> time!
>
> The preferred format is as below:
>
> Callsign: G3XDY
> Locator: JO02OB
> Bands: 5.7GHz 15W 60cm dish
> 10GHz 10W 60cm dish
> Talkback: ON4KST and 144.175MHz
> Times: Probably early and late in the day.
>
>
> 73
>
> John G3XDY
> UkuG Contest Manager
>