Date   

Re: Wiltron 560 Manual

Richard <richard@...>
 

Many thanks Ken

On Thu, 2019-01-31 at 09:56 -0800, Ken G3YKI wrote:
I have a copy; 360pages and 71 MB.
I will put it somewhere accessible.
Given to me by Rainer, who I believe is a member of this group.
Ken


Re: Wiltron 560 Manual

 

I have a copy; 360pages and 71 MB.
I will put it somewhere accessible.
Given to me by Rainer, who I believe is a member of this group.
Ken


Re: Réf. : Re: [UKMicrowaves] 13cms interdigital filter

G3UVR Denis IO83KH
 

Hi Francois.

I think I have fixed the broken link today.

The spill centre pins of the BNC sockets are not soldered to the solid brass 10mm coupling lines. If you look closely in the middle picture you can see a small hole in the ends of the lines where they meet the BNC sockets this was bored and tapped to accept a small grub screw 2mm or 2.5mm from memory. These lines where solid material and also bored exactly the size to accept the centre pins from the BNC sockets.

I also add if I built another filter today I would use different more suitable sockets for the frequency of 2.3ghz. In practice having preamp gain ahead of the filter the additional loss of the BNC sockets does not matter in my case. Please remember I built this filter way back around 1990 and knocked it up with what components I had in my junk box at that time.

At my QTH the Towns main telephone exchange is less than 100m away and there are several 4g masts less than 500m away and this little 3 pole filter certainly cleans up my receiver. I see no point at this QTH needing a filter with more poles to solve RX problems.

73 de Denis G3UVR


Re: Odd effect whilst testing LNBs

Brian Howie GM4DIJ
 

In message <20199.1548872738345149918@groups.io>, Mike Willis <willis.mj@gmail.com> writes
Neglecting rain scatter or snow scatter as the propagation mechanism,
you are also rotating an oscillating structure in a magnetic field. I
would think that more likely than gravity but easy to test with a
magnet.
It was the first thing I did. I used a large magnetron magnet. - No noticeable effect. I know that it seriously detunes transistor radios.

Brian


--
Brian Howie


Re: Octagon LNB

Andy G4JNT
 

I just purchased a dual output one from the German link publicised here a couple of weeks ago.   It's 27MHz, tested by listening on an HF receiver to the IF output.   Interestingly, at 10GHz, one output is within 3kH - spot on for a free runner; the other is a rather excessive 148kHz off,   or 14 PPM.     The difference is audible at the fundamental as an audio tone difference of 400Hz

The postage cost was about the same as the unit itself.

I'm pondering if the 27MHz leakage down the IF could be used to compensate for the frequency offset.



On Thu, 31 Jan 2019 at 15:18, PAUL NICKALLS via Groups.Io <paulnick=btinternet.com@groups.io> wrote:
Hi Martyn,

Most people have the twin output version.  It may be that the identification system does not apply to this.  My 27MHz twin output has 3 marks each side as per Scatterpoint.

73
Paul G8AQA

On 31/01/2019 14:51, Martyn G3UKV wrote:

GA All

Catching up with reading - re Scatterpoint January 19, page 10.

I have the Octagon 'Optima/Oslo' LNB with single output. The Xtal is on 27 MHz (well, 26.9996+).  Markings on the LNB casing include 10 marks each side of a central "V" - which is different to that suggested by Jen (G4HIZ) in her excellent article.

BTW - no need to open up the LNB to find the Xtal frequency - just place LNB close to an HF receiver!  I found the Xtal remarkably stable after leaving on all day, but still purchased a TCXO recommended on the DL-AMSAT pages. [DigiKey part No. CW655CT-ND for 27MHz, CW654CT-ND for 25 MHz]

73 Martyn G3UKV



Virus-free. www.avg.com


Re: Octagon LNB

Paul G8AQA
 

Hi Martyn,

Most people have the twin output version.  It may be that the identification system does not apply to this.  My 27MHz twin output has 3 marks each side as per Scatterpoint.

73
Paul G8AQA

On 31/01/2019 14:51, Martyn G3UKV wrote:

GA All

Catching up with reading - re Scatterpoint January 19, page 10.

I have the Octagon 'Optima/Oslo' LNB with single output. The Xtal is on 27 MHz (well, 26.9996+).  Markings on the LNB casing include 10 marks each side of a central "V" - which is different to that suggested by Jen (G4HIZ) in her excellent article.

BTW - no need to open up the LNB to find the Xtal frequency - just place LNB close to an HF receiver!  I found the Xtal remarkably stable after leaving on all day, but still purchased a TCXO recommended on the DL-AMSAT pages. [DigiKey part No. CW655CT-ND for 27MHz, CW654CT-ND for 25 MHz]

73 Martyn G3UKV



Virus-free. www.avg.com


Wiltron 560 Manual

Richard <richard@...>
 

Hi
Has anyone got a Wiltron 560 scaler analyser manual in pdf format or a
printed version I could borrow to copy please.
I have three of these beasts , one working and two in an unknown state.
problem is they are big, put legs on em and they'd make a coffee table.
So I'd like to investigate the possibilities of using the log amps and
front panel of one to use in front of a DSO, using the DSO on a XY
sweep.
Just an idea , maybe another mad one but it would make a physically
smaller sweeper display
--
Best wishes /73
Richard Bown

Email : richard@g8jvm.com

HTTP : http://www.g8jvm.com

######################################################################

Ham Call: G8JVM . QRV: 50-432 MHz + Microwave
Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W,
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
OS: Linux Mint 19.1 x86_64 Tessa, on a Dell Inspiron N5030 laptop
######################################################################


Octagon LNB

Martyn G3UKV
 

GA All

Catching up with reading - re Scatterpoint January 19, page 10.

I have the Octagon 'Optima/Oslo' LNB with single output. The Xtal is on 27 MHz (well, 26.9996+).  Markings on the LNB casing include 10 marks each side of a central "V" - which is different to that suggested by Jen (G4HIZ) in her excellent article.

BTW - no need to open up the LNB to find the Xtal frequency - just place LNB close to an HF receiver!  I found the Xtal remarkably stable after leaving on all day, but still purchased a TCXO recommended on the DL-AMSAT pages. [DigiKey part No. CW655CT-ND for 27MHz, CW654CT-ND for 25 MHz]

73 Martyn G3UKV


Réf. : Re: [UKMicrowaves] 13cms interdigital filter

F1CHF
 

Denis
thanks for the link
one question :
how the BNC plug is connected to the stub ?
no solder point is visible , or may be on the back side ?
or it is a coupling system ..
second thing :
the link on your web side seems dead (Error 404)
this link
 
thanks
 
 
 
 
 
-------Message original-------
 
Date : 31/01/2019 12:39:00
Sujet : Re: [UKMicrowaves] 13cms interdigital filter
 
John, Pete.

Here are some pictures of a 13cm filter I made years back  it was made out of aluminum and brass that I had and apart from the boring task of drilling and tapping 40 or so holes was easy to make. Being just 3 pole it was easy to adjust. I originally had it on my 13cm ATV receiver to get rid of Wifi and Microwave ovens and these days its on my SSB CW system getting rid on 2.15ghz signals. I have it inserted after my DB6NT preamp and before the receive converter. Its just in the RX line and I use a small DG0VE PCB filter in the TX line to clean up the out going signal.

Link to pics. https://www.qsl.net/g3uvr/13cmFilter/13cmFilter.htm

73 de Denis G3UVR
 


Re: Beginner request

Paul G8KFW
 

Hi Ben

I tried to send an E mail directly to you using the Email address in your posting

but the E mail bounced  could you please Email me

 

regarding the radar dish  0.8 wide by 0.6 high is this from a civil aircraft if so I believe I have 2 In the stores and also the associated radar equipment

 

regards Paul

 


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of militaryoperator via Groups.Io
Sent: 31 January 2019 11:24
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] Beginner request

 

Ben  regarding the 1.1 dish and the 1.8 dish  as already stated both are a bit of an over kill for portable

but they are just what you want if you intend to work with the new Eshail 2 satellite

as I have read that receive requires a  1 mt dish bur transmit requires a larger dish for TV

as the transmitter PA have to be backed of to prevent limiting within the PA

(for TX and RX you can use the same dish)

 

I suggest you contact the South Birmingham radio club as they are active on microwave bands and go out on portable close to your location

 

Paul G8KFW

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

 

Hi Paul. I have a nice ex radar dish, maybe 0.8 wide by 0.6 high with a waveguid feed, might find a use for that? hi. 

 

Ben.

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15884 - Release Date: 08/14/18
Internal Virus Database is out of date.


--
Paul Bicknell G8KFW   South Coast UK


Re: Beginner request

Richard <richard@...>
 

Also as well as the South Birmingham group , there is the Hereford group and they meet at Leominster, not too far from you.
I also have reasonable test equipment if you need help.
There is also the Cardiff round Table on the 16th March, that less than 2 hrs away for you , M5,M50, short length of dual carriageway
past Abergaveny down to the M4, and before I'm told I know its misspelled !
And should you get bored at the RT, its only about half a mile from the rugby match Wales v Ireland
73
Richard G8JVM


On Thu, 2019-01-31 at 11:23 +0000, militaryoperator via Groups.Io wrote:
Ben  regarding the 1.1 dish and the 1.8 dish  as already stated both are a bit of an over kill for portable
but they are just what you want if you intend to work with the new Eshail 2 satellite
as I have read that receive requires a  1 mt dish bur transmit requires a larger dish for TV
as the transmitter PA have to be backed of to prevent limiting within the PA
(for TX and RX you can use the same dish)
 
I suggest you contact the South Birmingham radio club as they are active on microwave bands and go out on portable close to your location
 
Paul G8KFW
---------------------------------------

Hi Paul. I have a nice ex radar dish, maybe 0.8 wide by 0.6 high with a waveguid feed, might find a use for that? hi. 

Ben.


Re: Anglian transverter

alwyn.seeds1
 

Dear All,

These are bargain price, but will have very limited large signal handling- single-ended dual gate MOSFET mixers.

Regards,

Alwyn
_____________________________________________________

Alwyn Seeds, Director
SynOptika Ltd.,
114 Beaufort Street,
London,
SW3 6BU,
England.

Tel.: +44 (0) 20 7376 4110


SynOptika Ltd., Registered in England and Wales: No. 04606737
Registered Office: 114 Beaufort Street, London, SW3 6BU, United Kingdom.
_____________________________________________________


Re: 13cms interdigital filter

G3UVR Denis IO83KH
 

John, Pete.

Here are some pictures of a 13cm filter I made years back  it was made out of aluminum and brass that I had and apart from the boring task of drilling and tapping 40 or so holes was easy to make. Being just 3 pole it was easy to adjust. I originally had it on my 13cm ATV receiver to get rid of Wifi and Microwave ovens and these days its on my SSB CW system getting rid on 2.15ghz signals. I have it inserted after my DB6NT preamp and before the receive converter. Its just in the RX line and I use a small DG0VE PCB filter in the TX line to clean up the out going signal.

Link to pics. https://www.qsl.net/g3uvr/13cmFilter/13cmFilter.htm

73 de Denis G3UVR


Re: Beginner request

militaryoperator
 

Ben  regarding the 1.1 dish and the 1.8 dish  as already stated both are a bit of an over kill for portable
but they are just what you want if you intend to work with the new Eshail 2 satellite
as I have read that receive requires a  1 mt dish bur transmit requires a larger dish for TV
as the transmitter PA have to be backed of to prevent limiting within the PA
(for TX and RX you can use the same dish)
 
I suggest you contact the South Birmingham radio club as they are active on microwave bands and go out on portable close to your location
 
Paul G8KFW
---------------------------------------

Hi Paul. I have a nice ex radar dish, maybe 0.8 wide by 0.6 high with a waveguid feed, might find a use for that? hi. 

Ben.


Re: Beginner request

Paul G8KFW
 

Ben  regarding the 1.1 dish and the 1.8 dish  as already stated both are a bit of an over kill for portable

but they are just what you want if you intend to work with the new Eshail 2 satellite

as I have read that receive requires a  1 mt dish bur transmit requires a larger dish for TV

as the transmitter PA have to be backed of to prevent limiting within the PA

(for TX and RX you can use the same dish)

 

I suggest you contact the South Birmingham radio club as they are active on microwave bands and go out on portable close to your location

 

Paul G8KFW

 


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Richard
Sent: 31 January 2019 10:44
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] Beginner request

 

Hi Ben

I see you are my side of the country in Kidderminster, I've probably worked you on VHF/UHF

1.1 mtr dish is not the easiest to use portable, but the are plenty of hills with road access near you .

I'm guess as you haven't said that you are thinking of either EME of Amsat P4 may be the way you are going. 

A 1.1 mtr dish has plenty of gain 13 cms up, but remember that as you go higher in frequency the gain increases, 

BUT the beam width gets very narrow , which makes its use above 24 GHz much harder, not impossible though.

If you are contemplating EME check the moon visibility from which ever QTH you intend using .

There are several sites which will give you the Az/EL of the moon throughout the year, you may find that you have path obstructions

which limit your horizon and hence limit who you can work. If EME you also have a very steep learning curve , IT IS NOT PLUG AND PLAY.

 

73 Richard G8jvm, 35 miles NE of you

 

 

On Thu, 2019-01-31 at 09:29 +0000, militaryoperator via Groups.Io wrote:

You might need a smaller solderig iron :-))

Thanks for lots of enjoyment inthe past....enjoy radio above 1000Megacycles (I belong to that era too)

Alan

G3NYK

 

 

Thanks Alan. Yes, my 100w gun might be a tad too big, hi.I shall have fun trying to get my 807's or 6L6's to fire up on 3cm but i'll give it a go.

 

As you say, its just a matter or reading the interweb etc and picking up bits as we go along. Or buy a complete setup from Germany or Europe and plug it straight into my hf rig, hi. 

 

Just bought a 1.1mtr dish and there's a nice 1.8mtr prime focus one nearby on a very solid base but maybe a tad overkill, hi.

 

cheers, Ben G4BXD 

 

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15884 - Release Date: 08/14/18
Internal Virus Database is out of date.


--
Paul Bicknell G8KFW   South Coast UK


Re: Beginner request

militaryoperator
 

Subject: Re: [UKMicrowaves] Beginner request
I'm surprised no-one has mentioned the Microwave Handbooks published by RSGB / Mike Dixon in the '90s. They're old, and many of the designs are well past their sell-by date, but I still find them a useful and readable source of information (and they're not written in too technical a style).

The three volumes are all available on Ebay for a few quid each.

Martin/


I do have a very good Microwave handbook Martin but it only covers soups and stews etc, not one mention of Amsat!

Ben.


Re: Beginner request

Richard <richard@...>
 

Hi Ben
I see you are my side of the country in Kidderminster, I've probably worked you on VHF/UHF
1.1 mtr dish is not the easiest to use portable, but the are plenty of hills with road access near you .
I'm guess as you haven't said that you are thinking of either EME of Amsat P4 may be the way you are going. 
A 1.1 mtr dish has plenty of gain 13 cms up, but remember that as you go higher in frequency the gain increases, 
BUT the beam width gets very narrow , which makes its use above 24 GHz much harder, not impossible though.
If you are contemplating EME check the moon visibility from which ever QTH you intend using .
There are several sites which will give you the Az/EL of the moon throughout the year, you may find that you have path obstructions
which limit your horizon and hence limit who you can work. If EME you also have a very steep learning curve , IT IS NOT PLUG AND PLAY.

73 Richard G8jvm, 35 miles NE of you


On Thu, 2019-01-31 at 09:29 +0000, militaryoperator via Groups.Io wrote:
You might need a smaller solderig iron :-))
Thanks for lots of enjoyment inthe past....enjoy radio above 1000Megacycles (I belong to that era too)
Alan
G3NYK
 
 
Thanks Alan. Yes, my 100w gun might be a tad too big, hi.I shall have fun trying to get my 807's or 6L6's to fire up on 3cm but i'll give it a go.

As you say, its just a matter or reading the interweb etc and picking up bits as we go along. Or buy a complete setup from Germany or Europe and plug it straight into my hf rig, hi. 

Just bought a 1.1mtr dish and there's a nice 1.8mtr prime focus one nearby on a very solid base but maybe a tad overkill, hi.

cheers, Ben G4BXD 


Re: Réf. : [UKMicrowaves] Dish surface paint

Neil Smith G4DBN
 

Ah, it is the same everywhere Dom. There are two LF/VLF lists, and people are still arguing about which is best.  I subscribe to both.

73 Neil

On 31/01/2019 10:06, F6DRO wrote:
Hi Neil ,

there is something stupid  with our microwave lists in France...; We have two reflectors , hyperfr@hyperfr.fr and list-hyperfr@r-e-f.org


Re: Beginner request

Martin Phillips G4CIO
 

I'm surprised no-one has mentioned the Microwave Handbooks published by RSGB / Mike Dixon in the '90s. They're old, and many of the designs are well past their sell-by date, but I still find them a useful and readable source of information (and they're not written in too technical a style).

The three volumes are all available on Ebay for a few quid each.

Martin/

On 31/1/19 9:29 AM, militaryoperator via Groups.Io wrote:
You might need a smaller solderig iron :-))
Thanks for lots of enjoyment inthe past....enjoy radio above 1000Megacycles (I belong to that era too)
Alan
G3NYK
 
 
Thanks Alan. Yes, my 100w gun might be a tad too big, hi.I shall have fun trying to get my 807's or 6L6's to fire up on 3cm but i'll give it a go.

As you say, its just a matter or reading the interweb etc and picking up bits as we go along. Or buy a complete setup from Germany or Europe and plug it straight into my hf rig, hi. 

Just bought a 1.1mtr dish and there's a nice 1.8mtr prime focus one nearby on a very solid base but maybe a tad overkill, hi.

cheers, Ben G4BXD 



Re: Réf. : [UKMicrowaves] Dish surface paint

F6DRO
 

Hi Neil ,

there is something stupid with our microwave lists in France...; We have two reflectors , hyperfr@hyperfr.fr and list-hyperfr@r-e-f.org

Why? I don't know. I can only guess , maybe some people who created the hyperfr.fr are against the REF association?

73
Dom/F6DRO

17121 - 17140 of 64818