Date   

Re: Ball Efratom Rb freq reference

KENT BRITAIN
 

I had a similar issue with a precision 5 MHz soruce.

I split the 5 MHz, ran it into two ports of a mixer, filtered the output and added a MMIC amp.    Mixed the 5 MHz with the 5 MHz!    Kent

On Monday, October 18, 2021, 08:21:54 AM CDT, Wilko <wkb@...> wrote:


hi,

Yesterday a fellow OM and yours truly acquired this one. Dual Rb, GPSDO. Old but appears to be working just dandy. Alas: 5MHz output.  Does anyone know if these can be hacked into supplying 10MHz instead?  The docs I have sofar acquired mention 5 and 10MHz variants.





In the grander scheme of things: if the distrib amps would be modifiable to 10MHz I would already be happy.

73 Wilko
PA1WBU






Re: Getting there ...

Paul G8AQA
 

I have some WG16 flexible waveguide (attenuators!) here if you are interested and want to measure it.

73
Paul G8AQA

On 18/10/2021 13:50, Robin Szemeti - G1YFG wrote:
Another step in the 10GHz puzzle solved ... a pair of Kuhne preamps.   The SMA one will go in the 22W SSPA version, SMA relay, possible EME use, but focussed on hilltop use ...

The WG one will go with the big TWT/WG relay/2.4m dish for EME.  I've managed to acquire an ex military (Skynet system) 2.4m dish, complete with a tripod base and full mill spec motorised az/el mount ... I'm told it has a few metres of flexible waveguide, which shuodl make hooking it up to the TWT somewhat easier.20211018_134224.jpg


--
Best regards,

Robin Szemeti, G1YFG


--
Robin Szemeti - G1YFG


Virus-free. www.avg.com


Ball Efratom Rb freq reference

Wilko
 

hi,

Yesterday a fellow OM and yours truly acquired this one. Dual Rb, GPSDO. Old but appears to be working just dandy. Alas: 5MHz output. Does anyone know if these can be hacked into supplying 10MHz instead? The docs I have sofar acquired mention 5 and 10MHz variants.





In the grander scheme of things: if the distrib amps would be modifiable to 10MHz I would already be happy.

73 Wilko
PA1WBU


Getting there ...

Robin Szemeti - G1YFG
 

Another step in the 10GHz puzzle solved ... a pair of Kuhne preamps.   The SMA one will go in the 22W SSPA version, SMA relay, possible EME use, but focussed on hilltop use ...

The WG one will go with the big TWT/WG relay/2.4m dish for EME.  I've managed to acquire an ex military (Skynet system) 2.4m dish, complete with a tripod base and full mill spec motorised az/el mount ... I'm told it has a few metres of flexible waveguide, which shuodl make hooking it up to the TWT somewhat easier.20211018_134224.jpg


--
Best regards,

Robin Szemeti, G1YFG


--
Robin Szemeti - G1YFG


OZ5SHF back

Ole OZ2OE
 

The OZ5SHF beacon system is back "On Air" after repair and adjustment. As we no longer have access to the 2300-2400 MHz part of 13 cm in OZ, the old 13 cm frequency has been changed to 2400,900 MHz. Other frequencies are unchanged: 1296,900 MHz, 3400,900 MHz, 5760,900 MHz, 10368,900 MHz and 24048,900 MHz.
73 Ole, OZOE


Re: GB3MHZ 13 cm beacon

John Quarmby
 

We hope to bring it back soon, dependant on access and availability of the right people with site passes. I will post when we have more news.

73

John G3XDY

On 16/10/2021 16:00, Rien Eradus PA0JME wrote:
It has been a while that the 2320.830MHz GB3MHZ beacon vanished due to problems.
Is there any expectancy that the beacon will return? It is a nice condx indicator for 13cm.
Though condx have been poor the past year I managed to receive the 9cm beacon not so consistent as I did with the 23cm (always audible) and the 13 cm beacon.
Hopefully in spring I can put up the 10GHz and 5.76GHz transverters. 24GHz is planned too.

Virus-free. www.avast.com


Re: ATC700 capacitors

Conrad, PA5Y
 

No space.

 

Conrad

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Robin Szemeti - G1YFG via groups.io
Sent: 16 October 2021 13:20
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] ATC700 capacitors

 

You could try the sample service at AVX,  You might be better to choose 2 x 1.5kv caps in series, which are easier to find.

 

On Sat, 16 Oct 2021 at 11:41, Conrad, PA5Y <g0ruz@...> wrote:

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


--
Robin Szemeti - G1YFG


Re: ATC700 capacitors

Gedas
 

Just FYI, here in the states I tried to get any number of 800C series caps as samples 2 weeks ago and they have ZERO available of any value with lead times for sales over several months.

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 10/16/2021 11:32 AM, geoffrey pike via groups.io wrote:

The sample service from AVX states that you may have to pay for them
Geoff
GI0GDP

On Saturday, 16 October 2021, 12:20:26 BST, Robin Szemeti - G1YFG <robin@...> wrote:


You could try the sample service at AVX,  You might be better to choose 2 x 1.5kv caps in series, which are easier to find.

On Sat, 16 Oct 2021 at 11:41, Conrad, PA5Y <g0ruz@...> wrote:

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


--
Robin Szemeti - G1YFG


GB3MHZ 13 cm beacon

Rien Eradus PA0JME
 

It has been a while that the 2320.830MHz GB3MHZ beacon vanished due to problems.
Is there any expectancy that the beacon will return? It is a nice condx indicator for 13cm.
Though condx have been poor the past year I managed to receive the 9cm beacon not so consistent as I did with the 23cm (always audible) and the 13 cm beacon.
Hopefully in spring I can put up the 10GHz and 5.76GHz transverters. 24GHz is planned too.


Re: ATC700 capacitors

Robin Szemeti - G1YFG
 

I've never minded paying ... just being able to actually get them is a blessing!   Mouser list some of those at over £40 each though, I assume it is for some valve-based project if it neds the high DC voltages.


On Sat, 16 Oct 2021 at 16:32, geoffrey pike via groups.io <gi0gdp=yahoo.co.uk@groups.io> wrote:
The sample service from AVX states that you may have to pay for them
Geoff
GI0GDP

On Saturday, 16 October 2021, 12:20:26 BST, Robin Szemeti - G1YFG <robin@...> wrote:


You could try the sample service at AVX,  You might be better to choose 2 x 1.5kv caps in series, which are easier to find.

On Sat, 16 Oct 2021 at 11:41, Conrad, PA5Y <g0ruz@...> wrote:

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


--
Robin Szemeti - G1YFG


--
Robin Szemeti - G1YFG


Re: Coax Filters - 23cm etc.

Neil Smith G4DBN
 

Dominique F1FRV says there is a temporary server fault and the site has been off for a week. He hopes it will be back soon.

Neil G4DBN

On 15/10/2021 13:48, Dominique Dehays wrote:

Hi all ,


looks like there are server problems , try to ask F1FRV directly

f1frv@sfr.fr

he is a nice guy ( not only because of his nice 1st name)


Re: ATC700 capacitors

geoffrey pike
 

The sample service from AVX states that you may have to pay for them
Geoff
GI0GDP

On Saturday, 16 October 2021, 12:20:26 BST, Robin Szemeti - G1YFG <robin@...> wrote:


You could try the sample service at AVX,  You might be better to choose 2 x 1.5kv caps in series, which are easier to find.

On Sat, 16 Oct 2021 at 11:41, Conrad, PA5Y <g0ruz@...> wrote:

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


--
Robin Szemeti - G1YFG


Activity List for the UK Microwave Group 24/47/76GHz Contests - Sunday 17th October

John Quarmby
 

Thanks for your inputs for tomorrow's mm-wave contests. These are the final sessions for the 2021 mm-wave Championship.

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

Here is the list - good luck to all taking part:

Callsign: G4BAO
Locator: JO02CG
Bands:  24GHz 2W 60cm offset dish
Talkback: ON4KST, 144MHz SSB, Zello SHF Chat
Times: Dependent on local activity

Callsign: G1EHF/P
Locator: IO91GI25 (Combe Gibbet)
Bands:  24GHz 250mW 60cm PF dish
47GHz ~100uW 30cm PF dish
Talkback: ON4KST, 144.390 SSB, 433.450 NBFM
Times: 10am BST onwards

Callsign  G8ACE/P
Locator IO91GC  Near Stockbridge Hants
Bands  24GHz 2w 60cm dish  -  47GHz 7mW  FM 40cm dish  - 76GHz FM  if anyone else locally does
Talkback  144390  &  433450
Times until about 4pm BST

Callsign: G3ZME/P
Locator: IO82QL
Band: 24GHz, 60cm prime focus dish. 0.5W
Talkback: 144.390, Zello SHF Chat, phone: 07421 001166, possibly 'KST on phone ('orrible)
Times: From ~ 10.30 BST

Callsign:  G1DFL/P
Locator:   Roving in IO91 and maybe into IO81
Bands:     24GHz 0.25W 30cm
               47GHz 0.0005W 30cm
Talkback: 144.390 SSB/433.450 NBFM, wtKST, Zello,
               07713 432632.
Times:     10.30am to 4pm

Callsign: G0JBA/P
Locator: JO01MC     1130-1330 local
Locator: JO01NI    1500-1600 local
Bands:  24GHz 1.8W 40cm OS dish
Talkback: ON4KST, 144MHz SSB
Times: 1130-1330 local then 1500-1600 local - Rover
The first location will favour towards the West from Nr Folkestone Kent
Second location is on the North Kent Coast

Callsign: G3XDY
Locator: JO02OB
Bands:  24GHz 3W 48cm PF dish
Talkback: ON4KST, Zello SHF Chat
Times: Dependant on local activity

73

John G3XDY


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Re: Coax Filters - 23cm etc.

G8DQX list
 

Or extracted from https://worldradiohistory.com/Archive-IRE/40s/IRE-1944-11.pdf <https://worldradiohistory.com/Archive-IRE/40s/IRE-1944-11.pdf>, using a PDF manipulation program.

73, HTH, Stay Safe,

Robin, G8DQX

On 15/10/2021 14:57, Simon G8DMN via groups.io wrote:
Thanks, both.
The discontinuity correction graph comes from a 1944 ProcIRE paper which can be downloaded from https://worldradiohistory.com/hd2/IDX-Site-Technical/Engineering-General/Archive-IRE-IDX/IDX/40s/IRE-1944-11-OCR-Page-0080.pdf <https://worldradiohistory.com/hd2/IDX-Site-Technical/Engineering-General/Archive-IRE-IDX/IDX/40s/IRE-1944-11-OCR-Page-0080.pdf> one page at a time. I've put the whole thing in the 'Files' tab : WhinneryJamiesonRobbins.zip. Thankfully F1FRV has done the hard work for us for these filters.
73,
Simon


Re: ATC700 capacitors

Robin Szemeti - G1YFG
 

You could try the sample service at AVX,  You might be better to choose 2 x 1.5kv caps in series, which are easier to find.

On Sat, 16 Oct 2021 at 11:41, Conrad, PA5Y <g0ruz@...> wrote:

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


--
Robin Szemeti - G1YFG


Re: ATC700 capacitors

Dominique Dehays
 

Hi Conrad ,

probably here

https://www.rf-microwave.com/it/home/

73

Dom/F6DRO

Le 16/10/2021 à 12:40, Conrad, PA5Y a écrit :

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


ATC700 capacitors

Conrad, PA5Y
 

Hello where can I get ATC 700E caps from? Or should I say AVX 700E series? I need 2 x 12pF F tolerance, 2 x 8.2PF B tolerance and 3 x 24pF F tolerance. These do not appear to be stock items at Mouser.

 

73

 

Conrad PA5Y


Re: Activity List for the UK Microwave Group 24/47/76GHz Contests - Sunday 17th October

G1DFL
 

I plan to be out on Sunday.

Callsign:  G1DFL/P
Locator:   Roving in IO91 and maybe into IO81
Bands:     24GHz 0.25W 30cm
               47GHz 0.0005W 30cm
Talkback: 144.390 SSB/433.450 NBFM, wtKST, Zello,
               07713 432632.
Times:     10.30am to 4pm

Hope to work some of you!

Regards..Pete
G1DFL

On Friday, October 15, 2021, 05:07:47 PM GMT+1, G8ACE <hazellje@...> wrote:


My Plans

Callsign  G8ACE/P
Locator IO91GC  Near Stockbridge Hants
Bands  24GHz 2w 60cm dish  -  47GHz 7mW  FM 40cm dish  - 76GHz  FM  if anyone else locally does
Talkback  144390  &  433450
Times until about 4pm BST

Also taking my 630nm (red light) system to see if a longer daylight path is possible

73 John G8ACE


Re: Activity List for the UK Microwave Group 24/47/76GHz Contests - Sunday 17th October

Martyn G3UKV
 

Callsign: G3ZME/P
Locator: IO82QL
Band: 24GHz, 60cm prime focus dish. 0.5W
Talkback: 144.390, Zello SHF Chat, phone: 07421 001166, possibly 'KST on phone ('orrible)
Times: From ~ 10.30 BST
P.S. Tough going in Sept. - hope for a bit more this final month, Walbury, S. Wales etc

73 Martyn G3UKV

On 11/10/2021 15:36, John Quarmby via groups.io wrote:
The last of the UKuG mm-wave contests for 2021 takes place this coming Sunday 17th October, from 0900-1700GMT (1000-1800BST).

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

As usual I will edit an activity list and post it next Saturday. Please post your plans using the format below:

Callsign: G3XDY
Locator: JO02OB
Bands:  24GHz 3W 48cm PF dish
Talkback: ON4KST, Zello SHF Chat
Times: Dependant on local activity

73

John G3XDY
UKuG Contest Manager




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Re: Activity List for the UK Microwave Group 24/47/76GHz Contests - Sunday 17th October

G8ACE
 

My Plans

Callsign  G8ACE/P
Locator IO91GC  Near Stockbridge Hants
Bands  24GHz 2w 60cm dish  -  47GHz 7mW  FM 40cm dish  - 76GHz  FM  if anyone else locally does
Talkback  144390  &  433450
Times until about 4pm BST

Also taking my 630nm (red light) system to see if a longer daylight path is possible

73 John G8ACE

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