Date   

Sites.dat

Andy G4JNT
 

The first updated version of   sites.dat   has now been placed at http://www.g4jnt.com/DownLoad/sites.dat
Along with a few corrections it now contains a complete listing of TV repeaters
 
For some reason, sometimes the file does not always load first time, and occasionally comes up with a "Site not Found" message.  It most certainly is there, and that URL is correct, so try again after a short delay.  Don't know why that should be.
 
It is a standard text file, so use Notepad or Wordpad or similar to read it.   You may need to set file types so .dat is opened with your text editor,
 
 
 
Andy  G4JNT


Réf. : Sites.dat

F1CHF
 

Andy
you said "it now contains a complete listing of TV repeaters"
and for example I see in this liste the followings calls
 
F1HRY QTH - Near Paris~JN18EQ~p
F1XAP QTH - 10358.108~IN88HL~p
F6DER QTH~JN23VU
F6DKW QTH - 5 km SW Paris~JN18CS~p
F6DRO QTH~JN03SM
those hams are Microwaves experts, but nothing with TV repeaters !
 
you can find the French TV repeaters here
 
Is there a link for UK TV repeaters somewhere ?
 
thanks
 
Francois F1CHF
 
 
 
 
 
-------Message original-------
 
Date : 24/09/2013 08:42:13
Sujet : [ukmicrowaves] Sites.dat
 
 

The first updated version of   sites.dat   has now been placed at http://www.g4jnt.com/DownLoad/sites.dat
Along with a few corrections it now contains a complete listing of TV repeaters
 
For some reason, sometimes the file does not always load first time, and occasionally comes up with a "Site not Found" message.  It most certainly is there, and that URL is correct, so try again after a short delay.  Don't know why that should be.
 
It is a standard text file, so use Notepad or Wordpad or similar to read it.   You may need to set file types so .dat is opened with your text editor,
 
 
 
Andy  G4JNT

 


Re: Nanowave SSTV equipment

Bill Ress <bill@...>
 

Thanks for the quick reply Barry,

Do you have any estimate of the optical power you were radiating? I guess I could dig out the path loss for that frequency but I bet you already know that.

Nice work guys. It's prompted me to dig into the subject further...Bill - N6GHz

On 9/23/2013 11:35 AM, Barry Chambers wrote:
Bill

Peter has passed this on for a reply.

Our transmitters use Luminus Phlatlight PT39 or CBT40 high power LEDs. These run at a standing current of typically 5-6 amps and are amplitude modulated with up to 15 amps on modulation peaks. These devices illuminate an A4 size Fresnel lens via an intermediate lens which increases the amount of light from the LED passing through the Fresnel to form a collimated beam probably 0.5-1 degree wide. The transmitters can cope with mcw, speech or data such as Hell, SSTV, WSJT.
My receiver is based on Clint KA7OEI's front end which uses a photodiode fed from another A4 size Fresnel lens. The front end feeds a LM386 audio amp. I also have a KA7OEI designed PIC based hum filter which can take out harmonics of the mains frequency (50 or 60Hz) since we get lots of optical QRM from streetlights here in the UK.
It's essential to have a good tripod with fine az/el adjustment for the rig. A telescopic sight with adjustable cross hairs is also very useful.

Hope this helps


23cms antenna required

Conrad Farlow <conrad@...>
 

I am not in a massive hurry but I will have some very nice BLF6G13L-250P pallets in my posession some time next week. I also have a good number of devices and PCBs as well as some BLL6H1214-500 devices. These are for 500W pulse operation on 1.3 GHz and will have to be de-rated somewhat. I'll let you know how they perform.

Both devices are 50V and best suited to fixed station operation or eme. I understand that the BLF6G13L-250P are used both singly and combined in the DB6NT PA's.

Anyway I will need an antenna to replace my bruised and battered 55 ele tonna. I think that a 1.2m dish would be perfect but all the 23cms antennas are so expensive. Does anyone have anything suitable that they would like to part with. Maybe we can do a swap for PCB, device and heat-spreader?

73

Conrad G0RUZ


Re: Wanted: Male N chassis mount plug - preferably silver plated.

Peter G3SMT
 

Hello Dave,

I have a chassis mounting N type but it has rather a large flange.  If it is suitable let me have your details and I will arrange to send it to you.

Regards

Peter
G3SMT


On 23/09/2013 09:23, David Kirkby wrote:
 

Does anyone know of where I can get a *male* N plug that is chassis
mount. Something like this

http://uk.farnell.com/amphenol-connex/172118/rf-coaxial-n-plug-str-50-ohm-solder/dp/1791344

from Farnell, but I am not keen to pay £16 delivery charge as it is
only stocked in the USA and not the UK. I'm only looking for one.
Preferably one that is silver plated, so I can solder as close to the
centre as possible.

I want to make a test jig, to measure the DC resistance of some male
and female terminations using a DVM with 4-wire resistance
measurement.

Dave



105km test pictures received at Holme Moss

Barry Chambers
 

Evening All

I'm just about to post into my UKNanowaves Group photos folder copies of Richard's SSTV pictures as received at Holme Moss last night. The quality is very good. The pictures which Richard received from me are a little noisier but this is probably due a lack of modulation depth in my Tx (a pot inside the modulator box needs tweaking a bit - will do for next time!)

--

73

Barry, G8AGN


Nanowave SSTV equipment

Barry Chambers
 

Bill

Peter has passed this on for a reply.

Our transmitters use Luminus Phlatlight PT39 or CBT40 high power LEDs. These run at a standing current of typically 5-6 amps and are amplitude modulated with up to 15 amps on modulation peaks. These devices illuminate an A4 size Fresnel lens via an intermediate lens which increases the amount of light from the LED passing through the Fresnel to form a collimated beam probably 0.5-1 degree wide. The transmitters can cope with mcw, speech or data such as Hell, SSTV, WSJT.
My receiver is based on Clint KA7OEI's front end which uses a photodiode fed from another A4 size Fresnel lens. The front end feeds a LM386 audio amp. I also have a KA7OEI designed PIC based hum filter which can take out harmonics of the mains frequency (50 or 60Hz) since we get lots of optical QRM from streetlights here in the UK.
It's essential to have a good tripod with fine az/el adjustment for the rig. A telescopic sight with adjustable cross hairs is also very useful.

Hope this helps

--

73

Barry, G8AGN


Re: More SSTV over nanowaves

Bill Ress <bill@...>
 

Hi Peter,

Thanks for the link. Would a description of the equipment used be available?

Regards...Bill - N6GHz

On 9/23/2013 9:16 AM, Peter Day wrote:
 


Take a look at the following URL to see what Barry G8AGN and Richard
G0RPH have been doing with their Sunday evenings! This latest test shows
how well the SSTV pictures were received at both ends of a 105km path.

http://youtu.be/0_kGB_Q3viE

Enjoy ...

Peter, G3PHO



More SSTV over nanowaves

Peter Day <microwaves@...>
 

Take a look at the following URL to see what Barry G8AGN and Richard G0RPH have been doing with their Sunday evenings! This latest test shows how well the SSTV pictures were received at both ends of a 105km path.


http://youtu.be/0_kGB_Q3viE


Enjoy ...

Peter, G3PHO


Re: Sites.dat

Dave Cossar <davecossar@...>
 

Hi Andy,

One site is GI8GJX Sam died about 10 years ago

Made my first 24 Ghz qso with him sadly missed.

 

Dave GM3WIL

 


From: ukmicrowaves@... [mailto:ukmicrowaves@...] On Behalf Of Andy Talbot
Sent: 23 September 2013 16:12
To: ukmicrowaves@...
Subject: [ukmicrowaves] Sites.dat

 

 

I've been looking through the old site database SITES.DAT.  This was originally started a very long time ago (by G3YGF and others in the BBC computer days) and I put together that version around 1990 to go with the original DOS based height database software.  Subsequently  Mike 'MJW took that database and incorporated into his path plotting software.  By which route I found I'd got it back, and it appears to have done the rounds as several more sites have been added.

 

I've now taken that version, cleaned up the GB3 Beacons listing a bit, deleted a couple of SK's  and placed it at  http://www.g4jnt.com/DownLoad/Sites.dat 

but there is by now an awful lot of obsolete sites / QTHs and errors, and SK's I've missed.  So it is long overdue for an overhaul

 

Can I ask you to check your entry and any others of note and email me any changes to be made, and most important, deletions that are needed.  All direct to me at this gmail address  please to avoid clogging up the reflector.   

 

In particular, for any site / QTH with only a six digit locator could you supply either NGR or 8 digit locator.   The 6 digit ones really aren't good enough for accurate dish pointing at 10GHz and up on medium length paths.  THIS PARTICULARLY applies to BEACONS which we often rely on for an accurate bearing reference.

 

The latest version will always be available at that URL as changes come in.

 

Andy  G4JNT

 

 

 


Sites.dat

Andy G4JNT
 

I've been looking through the old site database SITES.DAT.  This was originally started a very long time ago (by G3YGF and others in the BBC computer days) and I put together that version around 1990 to go with the original DOS based height database software.  Subsequently  Mike 'MJW took that database and incorporated into his path plotting software.  By which route I found I'd got it back, and it appears to have done the rounds as several more sites have been added.
 
I've now taken that version, cleaned up the GB3 Beacons listing a bit, deleted a couple of SK's  and placed it at  http://www.g4jnt.com/DownLoad/Sites.dat 
but there is by now an awful lot of obsolete sites / QTHs and errors, and SK's I've missed.  So it is long overdue for an overhaul
 
Can I ask you to check your entry and any others of note and email me any changes to be made, and most important, deletions that are needed.  All direct to me at this gmail address  please to avoid clogging up the reflector.   
 
In particular, for any site / QTH with only a six digit locator could you supply either NGR or 8 digit locator.   The 6 digit ones really aren't good enough for accurate dish pointing at 10GHz and up on medium length paths.  THIS PARTICULARLY applies to BEACONS which we often rely on for an accurate bearing reference.
 
The latest version will always be available at that URL as changes come in.
 
Andy  G4JNT
 
 
 


B30/20

Chris
 

Hi I am looking for a service manual for a farnell B30/20 PSU

cheers Chris GM4YLN


Re: 9cm Beacon Frequencies

Andy G4JNT
 

I believe GB3ZME uses frequecny locking, so you can probably assume that is correct.
GB3OHM does not, so assume that is the one in error
 
Perhaps the owners can confirm ZME locking status ?
 
Andy
G4JNT


 

On 23 September 2013 14:28, Robert Price <g8dtf@...> wrote:
 

Hi All

I have been playing with my 9cm system today. I have been trying to set the OCXO so that transverter IF frequency is about right.

Today I have been listening to GB3OHM and GB3ZME beacons. GB3OHM appears to be significantly low of 3400.900 and GB3ZME appears to be high of the correct frequency by a few KHz. There is no setting of my OCXO which makes either one of the beacons on the correct frequency.

Beaconspot indicates that both beacons are on frequency.

Can anyone confirm the frequencies of these beacons?

73

Bob
G8DTF



9cm Beacon Frequencies

Robert Price <g8dtf@...>
 

Hi All

I have been playing with my 9cm system today. I have been trying to set the OCXO so that transverter IF frequency is about right.

Today I have been listening to GB3OHM and GB3ZME beacons. GB3OHM appears to be significantly low of 3400.900 and GB3ZME appears to be high of the correct frequency by a few KHz. There is no setting of my OCXO which makes either one of the beacons on the correct frequency.

Beaconspot indicates that both beacons are on frequency.

Can anyone confirm the frequencies of these beacons?

73

Bob
G8DTF


IO76xa

Alan
 

I think condx may not be great now but have some time now but onky between 1520 and 1645..  GL
73 Alan GM0USI/P


Sent from Samsung Mobile



-------- Original message --------
From: David Kirkby <david.kirkby@...>
Date:
To: ukmicrowaves@...
Subject: [ukmicrowaves] Wanted: Male N chassis mount plug - preferably silver plated.


 

Does anyone know of where I can get a *male* N plug that is chassis
mount. Something like this

http://uk.farnell.com/amphenol-connex/172118/rf-coaxial-n-plug-str-50-ohm-solder/dp/1791344

from Farnell, but I am not keen to pay £16 delivery charge as it is
only stocked in the USA and not the UK. I'm only looking for one.
Preferably one that is silver plated, so I can solder as close to the
centre as possible.

I want to make a test jig, to measure the DC resistance of some male
and female terminations using a DVM with 4-wire resistance
measurement.

Dave


Re: Activity list for the 5.7/10/.24GHz Contest Sunday 29th September

Robert Price <g8dtf@...>
 

Hi John

I plan to be active as follows


Callsign: G8DTF
Locator: IO83SM
Bands: 10GHz 2.5W 78cm dish
Talkback: ON4KST and 144MHz
Times: Various times

73

Bob
G8DTF


From: G3XDY
To: "ukmicrowaves@..."
Sent: Sunday, 22 September 2013, 20:31
Subject: [ukmicrowaves] Activity list for the 5.7/10/.24GHz Contest Sunday 29th September

 
Its time for the activity list again for next week's UK Microwave Group
contests on 5.7, 10 and 24GHz. This is the final event in the series for
the Championships for these bands.

Please send me your plans in the usual format, as below, I aim to
publish them on Saturday morning.

73

John G3XDY
UKuG Contest Manager

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
10GHz 10W 60cm dish
Talkback: ON4KST and 144MHz
Times: Morning only.




Wanted: Male N chassis mount plug - preferably silver plated.

David Kirkby <david.kirkby@...>
 

Does anyone know of where I can get a *male* N plug that is chassis
mount. Something like this

http://uk.farnell.com/amphenol-connex/172118/rf-coaxial-n-plug-str-50-ohm-solder/dp/1791344

from Farnell, but I am not keen to pay £16 delivery charge as it is
only stocked in the USA and not the UK. I'm only looking for one.
Preferably one that is silver plated, so I can solder as close to the
centre as possible.

I want to make a test jig, to measure the DC resistance of some male
and female terminations using a DVM with 4-wire resistance
measurement.

Dave


Re: Activity list for the 5.7/10/.24GHz Contest Sunday 29th September

g4bao
 

Callsign: G4BAO
Locator: JO02cg
Bands: 24GHz 1.5W 60cm dish
10GHz 1W (or 6W) 60cm dish
Talkback: ON4KST
Times: times that suit my day!

I should add that if my new 6W 10GHz station build goes pear shaped this week, my mast may still be down and I will not be QRV, but "on the ground" system tests are going well!  Watch this space for updates

73
John


On 22 September 2013 20:31, G3XDY <g3xdy@...> wrote:
 

Its time for the activity list again for next week's UK Microwave Group
contests on 5.7, 10 and 24GHz. This is the final event in the series for
the Championships for these bands.

Please send me your plans in the usual format, as below, I aim to
publish them on Saturday morning.

73

John G3XDY
UKuG Contest Manager

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
10GHz 10W 60cm dish
Talkback: ON4KST and 144MHz
Times: Morning only.



Re: IO76xa Sunday 6,9 and 3

Alan
 

Hi Bryan,

I'm sorry I couldn't stay and chat...sked with XDY failed - I had worked him on 3cm the week before i went to Cumbrae.

Condx this pm were poor - getting better now - worked John on tropo from home on 23.  

I suspect tomorrow might be better - will wait and see.

Btw I am in IO77aa from the 12th Oct in Skye with 3 and 6cm..

73 Alan


To: ukmicrowaves@...
From: brian.flynn@...
Date: Sat, 21 Sep 2013 11:15:34 +0100
Subject: [ukmicrowaves] Re: IO76xa Sunday 6,9 and 3

 
Alan

I will come on 3 and 6 from home. If the WX is good I might even try some /P

Brian. GM8BJF

--
Dr Brian W Flynn
15 Riselaw Crescent
Edinburgh
EH10 6HN

0131 447 4043



Activity list for the 5.7/10/.24GHz Contest Sunday 29th September

John Quarmby
 

Its time for the activity list again for next week's UK Microwave Group contests on 5.7, 10 and 24GHz. This is the final event in the series for the Championships for these bands.

Please send me your plans in the usual format, as below, I aim to publish them on Saturday morning.

73

John G3XDY
UKuG Contest Manager

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 60cm dish
10GHz 10W 60cm dish
Talkback: ON4KST and 144MHz
Times: Morning only.