Date   

Re: 10GHZ EME Test this Friday pm @ G4RFR

R Hopkins
 

Hi John

Depending on how windy it is I will look out for you (RX only).

What frequency or frequencies will you be using for the various modes. Pardon my ignorance.

I have no trouble receiving DL0SHF when it is on air so hopefully I should be able to receive you.

Roger GW4NOS

On Wed, 26 Feb 2020 17:34:35 +0000, you wrote:

G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one
ways FB!

Best mode QRA64D with CFOM , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.


Re: 10GHZ EME Test this Friday pm @ G4RFR

John Fell
 

DL0SHF peaked around 16dB in 6HZ RBW on SDR RX .
G4RFR echoes at 200W average about +18dB using our normal Octagon or Golden Star LNB front ends . 
Moon noise around 1.8dB on  a good day and Sun 15dB .

73
John
G0API

On Wed, 26 Feb 2020 at 18:49, Neil Smith G4DBN <neil@...> wrote:

It's only 95cm, and although I can see a sniff of moon noise if I turn up my imagination level a bit, it is not really measurable. I have a Kuhne waveguide LNA and w/g relay and a WA6KBL-designed Picket-Potter linear horn, so it performs well for terrestrial. I see about 5dB sun noise. At that sort of performance, EMECalc suggests I should get RFR at -11 in 2500Hz and they should get me at -24 or so. EMECalc suggests 0.1dB moon noise and that is probably about right +-ESP.

I've never heard DL0SHF because it went off just as I enabled elevation on the dish, so I haven't got any baseline reference.

Still working on the drive mechanism for the 3m solid dish.

Neil G4DBN

On 26/02/2020 18:25, SAM JEWELL via Groups.Io wrote:
What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

Neil Smith G4DBN
 

yep, the same one I use in the UKACs, so not intended for pointing at moons and suchlike, but it will elevate up to 65 degrees, so I'll give it a shot

Neil

On 26/02/2020 18:51, SAM JEWELL via Groups.Io wrote:
Is this your terrestrial dish, Neil?
Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 6:49 pm, Neil Smith G4DBN <neil@...> wrote:

It's only 95cm, and although I can see a sniff of moon noise if I turn up my imagination level a bit, it is not really measurable. I have a Kuhne waveguide LNA and w/g relay and a WA6KBL-designed Picket-Potter linear horn, so it performs well for terrestrial. I see about 5dB sun noise. At that sort of performance, EMECalc suggests I should get RFR at -11 in 2500Hz and they should get me at -24 or so. EMECalc suggests 0.1dB moon noise and that is probably about right +-ESP.

I've never heard DL0SHF because it went off just as I enabled elevation on the dish, so I haven't got any baseline reference.

Still working on the drive mechanism for the 3m solid dish.

Neil G4DBN

On 26/02/2020 18:25, SAM JEWELL via Groups.Io wrote:
What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

SAM JEWELL
 

Is this your terrestrial dish, Neil?
Sam

On Wednesday, February 26, 2020, 6:49 pm, Neil Smith G4DBN <neil@...> wrote:

It's only 95cm, and although I can see a sniff of moon noise if I turn up my imagination level a bit, it is not really measurable. I have a Kuhne waveguide LNA and w/g relay and a WA6KBL-designed Picket-Potter linear horn, so it performs well for terrestrial. I see about 5dB sun noise. At that sort of performance, EMECalc suggests I should get RFR at -11 in 2500Hz and they should get me at -24 or so. EMECalc suggests 0.1dB moon noise and that is probably about right +-ESP.

I've never heard DL0SHF because it went off just as I enabled elevation on the dish, so I haven't got any baseline reference.

Still working on the drive mechanism for the 3m solid dish.

Neil G4DBN

On 26/02/2020 18:25, SAM JEWELL via Groups.Io wrote:
What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

John Fell
 

I have decoded the 10GHZ Moon Beacon DL0SHF ( 8.4m and 50W )in the past using my 60cm masthead tropo dish + externally refed. Octagon MK1 LNB and visual pointing on a full Moon - it is tricky and right on the limits , although Charlie G3WDG has done it with even less antenna (horn on edge of his dish).

This Friday the Moon is at /near Apogee (-2db on top of normal path loss) and Libration spreading is near to worst case , so it will not be easy for CW .Bit like the worst AR that just about works ....our CW will sound rough .

73
John
G0API

On Wed, 26 Feb 2020 at 18:31, Dominique Dehays <f6dro@...> wrote:

Hi ,


same here , I hear many stations in CW with only 120cm and I've worked several down to 180cm dish , so U may hear something. No way to lsn for me today , too much wind all systems are down.

73

Dom/F6DRO

Le 26/02/2020 à 19:25, SAM JEWELL via Groups.Io a écrit :
What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

Neil Smith G4DBN
 

It's only 95cm, and although I can see a sniff of moon noise if I turn up my imagination level a bit, it is not really measurable. I have a Kuhne waveguide LNA and w/g relay and a WA6KBL-designed Picket-Potter linear horn, so it performs well for terrestrial. I see about 5dB sun noise. At that sort of performance, EMECalc suggests I should get RFR at -11 in 2500Hz and they should get me at -24 or so. EMECalc suggests 0.1dB moon noise and that is probably about right +-ESP.

I've never heard DL0SHF because it went off just as I enabled elevation on the dish, so I haven't got any baseline reference.

Still working on the drive mechanism for the 3m solid dish.

Neil G4DBN

On 26/02/2020 18:25, SAM JEWELL via Groups.Io wrote:
What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

Dominique Dehays
 

Hi ,


same here , I hear many stations in CW with only 120cm and I've worked several down to 180cm dish , so U may hear something. No way to lsn for me today , too much wind all systems are down.

73

Dom/F6DRO

Le 26/02/2020 à 19:25, SAM JEWELL via Groups.Io a écrit :
What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam



Sent from Yahoo Mail for iPad

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

SAM JEWELL
 

What size dish are you using, Neil?
I’ve heard/seen a number of stations off the moon on 3cm with my 2.3m pf dish, none of who were running anything like 200W to a 3.4m dish. What moon noise/cold sky do you see?
I was seeing about 0.9dB last time I had the rx on. Could do better......

73 de Sam

On Wednesday, February 26, 2020, 5:42 pm, Neil Smith G4DBN <neil@...> wrote:

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


Re: 10GHZ EME Test this Friday pm @ G4RFR

Neil Smith G4DBN
 

I'll have a listen, zero hope of my weedy 12W making it back, but as you folks are doing all the heavy lifting, just might work on receive...

Neil G4DBN

On 26/02/2020 17:34, John Fell wrote:
G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.
-- 
Neil
<a href="http://g4dbn.uk/"><small>g4dbn.uk</small></a>


10GHZ EME Test this Friday pm @ G4RFR

John Fell
 

G4RFR will be QRV from approx. 1430 UTC this FRIDAY pm .

3.4m prime with 200W near feed .

Libration and path loss high so will be hard going , but please try - one ways FB!

Best mode QRA64D with CFOM  , but CW or even SSB if you are QRO.

uSWL reports welcome .

Will be on HB9Q .

73
John
G0API
Flight Refuelling ARS EME Group.


Re: Equipment for Sale

mike G6TRM
 

My thanks to everyone who has contacted me with their kind comments, Those who have asked for my equipment list, please bear with me, It will take me a further day or so to complete the list. I will then send out the list to everyone and work on a first come first served basis.

thanks,

Mike G6TRM

----- Original Message -----
From: "mike G6TRM via Groups.Io" <mike.bryant=virgin.net@groups.io>
To: <UKMicrowaves@groups.io>
Sent: Wednesday, February 26, 2020 12:53 PM
Subject: [UKMicrowaves] Equipment for Sale


Hi,
As I have just mentioned in a previous post, I have due to a change in circumstances have decided to no longer continue with Ham radio, in particular microwaves. To be honest, I am heartbroken to give up the hobby I love so much but sadly it all has to go.
To list everything on here would be unreasonable so I ask that any interest or questions be directed directly to my email address and NOT on the forum.
My plan is to email the list to anyone interested.
So in summery.
I have aerials, cables and equipment for the following bands:-
2M, 70, 23, 13, 9, 6, 3, 1.2 cm
most are moderate to high power o/p with preamps etc.
Test equipment: etc-
PSU's, Dummy loads (large and small), power meters, spectrum analyzers, oscilloscope, couplers, sensors and attenuators.
I have priced them best as I can but I'm happy to consider sensible offers.

Please no questions on the forum, only direct to :- mike.bryant@...

My thanks to all the many contacts I have made and to all the great friends and pals I have made over the years

my best regards

73

Mike Bryant G6TRM


Re: G4EML upconverter

Colin G4EML
 

Sorry, all gone. 

73
Colin. 


On 26 Feb 2020, at 14:18, lozdjames <lozdjames@...> wrote:

Hi Colin,

     Do you have any PCB's left ? 


Re: G4EML upconverter

lozdjames
 

Hi Colin,

     Do you have any PCB's left ? 


Equipment for Sale

mike G6TRM
 

Hi,
As I have just mentioned in a previous post, I have due to a change in circumstances have decided to no longer continue with Ham radio, in particular microwaves. To be honest, I am heartbroken to give up the hobby I love so much but sadly it all has to go.
To list everything on here would be unreasonable so I ask that any interest or questions be directed directly to my email address and NOT on the forum.
My plan is to email the list to anyone interested.
So in summery.
I have aerials, cables and equipment for the following bands:-
2M, 70, 23, 13, 9, 6, 3, 1.2 cm
most are moderate to high power o/p with preamps etc.
Test equipment: etc-
PSU's, Dummy loads (large and small), power meters, spectrum analyzers, oscilloscope, couplers, sensors and attenuators.
I have priced them best as I can but I'm happy to consider sensible offers.

Please no questions on the forum, only direct to :- mike.bryant@...

My thanks to all the many contacts I have made and to all the great friends and pals I have made over the years

my best regards

73

Mike Bryant G6TRM


Re: HP 432 digital display

mike G6TRM
 

Hi Paul,
You are quite right of course, I have the 435 and 436 and I forgot the 431/2 have a different power head.
Ironically I have only recently acquired the 436 having had the 435 for some years.
Sadly my circumstances have changed and I have to give up the hobby I loved so much, so all my equipment and test gear has to go.
 
cheers
 
Mike G6TRM

----- Original Message -----
From: Paul G8KFW
Sent: Wednesday, February 26, 2020 12:02 PM
Subject: Re: [UKMicrowaves] HP 432 digital display

Hi Mike

Thank you for your Email the HP 432 and 431  use a different head to the 435 / 436 / 437 / 438 etc

 

I would have thought you would keep it if you are using HP power heads  feel free to com back for any help required regarding HP test equipment

I am also looking for equipment above 40 Ghz

 

Best Regards Paul


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of mike G6TRM via Groups.Io
Sent: 26 February 2020 11:52
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] HP 432 digital display

 

Hi Paul,

 Will a HP 436 do? I have  one for sale if you are interested.

 

cheers

 

Mike G6TRM

----- Original Message -----

From: Paul G8KFW

Sent: Tuesday, February 25, 2020 11:36 PM

Subject: [UKMicrowaves] HP 432 digital display

 

Hi all looking for a HP 432  digital display  will swap for analogue version with cash or other adjustment

 

Regards Paul  England


--
Paul Bicknell G8KFW   South Coast UK

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: HP 432 digital display

Paul G8KFW
 

Hi Mike

Thank you for your Email the HP 432 and 431  use a different head to the 435 / 436 / 437 / 438 etc

 

I would have thought you would keep it if you are using HP power heads  feel free to com back for any help required regarding HP test equipment

I am also looking for equipment above 40 Ghz

 

Best Regards Paul


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of mike G6TRM via Groups.Io
Sent: 26 February 2020 11:52
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] HP 432 digital display

 

Hi Paul,

 Will a HP 436 do? I have  one for sale if you are interested.

 

cheers

 

Mike G6TRM

----- Original Message -----

From: Paul G8KFW

Sent: Tuesday, February 25, 2020 11:36 PM

Subject: [UKMicrowaves] HP 432 digital display

 

Hi all looking for a HP 432  digital display  will swap for analogue version with cash or other adjustment

 

Regards Paul  England


--
Paul Bicknell G8KFW   South Coast UK

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: HP 432 digital display

mike G6TRM
 

Hi Paul,
 Will a HP 436 do? I have  one for sale if you are interested.
 
cheers
 
Mike G6TRM

----- Original Message -----
From: Paul G8KFW
Sent: Tuesday, February 25, 2020 11:36 PM
Subject: [UKMicrowaves] HP 432 digital display

Hi all looking for a HP 432  digital display  will swap for analogue version with cash or other adjustment

 

Regards Paul  England


--
Paul Bicknell G8KFW   South Coast UK


HP 432 digital display

Paul G8KFW
 

Hi all looking for a HP 432  digital display  will swap for analogue version with cash or other adjustment

 

Regards Paul  England


--
Paul Bicknell G8KFW   South Coast UK


Re: Anyone who recognises this company logo?

Wilko
 

Thanks Murray!  I've contacted SEIM, as the exact part does not seem to be listed on their website. Already got a first email response,
requesting a picture of the device. Guessing.. might be a custom job.

73 Wilko


Re: Re path loss calculator

Iain Crawford
 

I always use http://www.heywhatsthat.com/ to see what the path looks.
Set the refraction parameter to 0.3 for RF.

If you're looking at 24GHz and above the atmospheric gas losses come into play (very big factor at 122GHz).
http://weather.vk5microwave.net/Calculate.aspx will calculate to total loss and, if you enter details of the TX and RX systems, will give an estimated S/N ratio of the received signal.

Iain VK5ZD