Cossor Cossor telecheck and marker generator 1322 - UK Vintage Radio Repair and Restoration Discussion Forum

tritone · 22nd Feb 2023, 10:56 pm

Hello,

Would any of you have any info on this Cossor telecheck and marker generator? model 1322, for bands I & III,

There's not much info on the web about it,

Thank you.

Cobaltblue · 22nd Feb 2023, 11:03 pm

Yes but I cant temember if I have scanned it yet.

Be tomorrow before I can check or scan.

Cheers

Mike T

tritone · 22nd Feb 2023, 11:08 pm

Thanks Mike T, that would be great as I cant seem to find hardly anything at all on the web.

Cheers.

Cobaltblue · 23rd Feb 2023, 1:03 pm

Hi I had already scanned it but not processed or uploaded so I did a very quick job on the most important parts the circuit and layout and attached them here.

Hopefully it will be enough for you to make a start.

Cheers

Mike T

tritone · 23rd Feb 2023, 3:25 pm

Mike, thanks for that. That’ll get me going for sure to do a check up and other things before I fire it up with the isolation transformer, variac and light bulb procedure.

Just wondering, is there a user manual for this as I have never used one before, let alone, seen one before? An interesting looking device though.

Also, I have been given a few other boat anchors by a long retired electronic engineer guy who was going to take them to the skip. I will post up some pics on a new thread ok.

Thanks Mike, much appreciated.

Cobaltblue · 23rd Feb 2023, 3:32 pm

The handbook does contain a user guide as well.

It will take me a few days to pull the file together as due to injury its not easy to work at the desk.

Yes I am sure many members would like to see your boat anchors

Let us know how you get on.

Cheers

Mike T

MotorBikeLes · 23rd Feb 2023, 9:43 pm

45 years ago I bough its predecessor, the 1320. That was band 1 only. It covered something over 10MHz (sorry, Mcs.)and also up to perhaps 60Mcs.
I was able to do FM IF alignment, and using the first overtone, check overall RF alignment.
Les.

Chris55000 · 12th Mar 2023, 2:20 am

Thanks for uploading that circuit!

The book by G.W. Parr and O.H. Davie, "The Cathode ray Oscilloscope and It's Applications" (Chapman and Hall, 1959) does show part of that circuit, the crystal oscillator, marker oscillator and the indicator (V5, V6 and V7) but not the rest of it!

Whoever did the book drawing tho' used a bit of artistic licence as the book diagram, altho' correctly marking the eye (V3 in the book) as "64ME", it's shown as a single–shadow type indicator – the 64ME is, of course, the Cossor direct equivalent of our old friend the EM34!

Incidentally, if you download the October 1951 issue of "Electronic Engineering" from the World Radio History website, there's a full circuit of a piece of apparatus used for locating structural faults in roads using ultrasonics, and this uses a variant of the circuitry around V5, V6 and V7 as well!

Chris Williams

Ed_Dinning · 12th Mar 2023, 8:43 am

Hi Folks, I believe I have one of these units, not used in many years, but a useful piece of kit. I also have the manual somewhere.
The output socket was a peculiar co-ax socket that was difficult to source.

I'll have a look for it on my return home

Ed

22nd Feb 2023, 10:56 pm	#1
tritone Banned Join Date: Nov 2014 Location: Derry, Northern Ireland, UK. Posts: 167	Cossor Cossor telecheck and marker generator 1322 Hello, Would any of you have any info on this Cossor telecheck and marker generator? model 1322, for bands I & III, There's not much info on the web about it, Thank you. Attached Thumbnails

22nd Feb 2023, 11:03 pm	#2
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,492	Re: Cossor Cossor telecheck and marker generator 1322 Yes but I cant temember if I have scanned it yet. Be tomorrow before I can check or scan. Cheers Mike T Attached Thumbnails __________________ Don't care if it was a bargain why's it in my kitchen Mike T BVWS member. www.cossor.co.uk

22nd Feb 2023, 11:08 pm	#3
tritone Banned Join Date: Nov 2014 Location: Derry, Northern Ireland, UK. Posts: 167	Re: Cossor Cossor telecheck and marker generator 1322 Thanks Mike T, that would be great as I cant seem to find hardly anything at all on the web. Cheers.

23rd Feb 2023, 3:25 pm	#5
tritone Banned Join Date: Nov 2014 Location: Derry, Northern Ireland, UK. Posts: 167	Re: Cossor Cossor telecheck and marker generator 1322 Mike, thanks for that. That’ll get me going for sure to do a check up and other things before I fire it up with the isolation transformer, variac and light bulb procedure. Just wondering, is there a user manual for this as I have never used one before, let alone, seen one before? An interesting looking device though. Also, I have been given a few other boat anchors by a long retired electronic engineer guy who was going to take them to the skip. I will post up some pics on a new thread ok. Thanks Mike, much appreciated.

23rd Feb 2023, 3:32 pm	#6
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,492	Re: Cossor Cossor telecheck and marker generator 1322 The handbook does contain a user guide as well. It will take me a few days to pull the file together as due to injury its not easy to work at the desk. Yes I am sure many members would like to see your boat anchors Let us know how you get on. Cheers Mike T __________________ Don't care if it was a bargain why's it in my kitchen Mike T BVWS member. www.cossor.co.uk

23rd Feb 2023, 9:43 pm	#7
MotorBikeLes Nonode Join Date: Dec 2012 Location: Kirk Michael, Isle of Man Posts: 2,236	Re: Cossor Cossor telecheck and marker generator 1322 45 years ago I bough its predecessor, the 1320. That was band 1 only. It covered something over 10MHz (sorry, Mcs.)and also up to perhaps 60Mcs. I was able to do FM IF alignment, and using the first overtone, check overall RF alignment. Les.

12th Mar 2023, 2:20 am	#8
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,627	Re: Cossor Cossor telecheck and marker generator 1322 Thanks for uploading that circuit! The book by G.W. Parr and O.H. Davie, "The Cathode ray Oscilloscope and It's Applications" (Chapman and Hall, 1959) does show part of that circuit, the crystal oscillator, marker oscillator and the indicator (V5, V6 and V7) but not the rest of it! Whoever did the book drawing tho' used a bit of artistic licence as the book diagram, altho' correctly marking the eye (V3 in the book) as "64ME", it's shown as a single–shadow type indicator – the 64ME is, of course, the Cossor direct equivalent of our old friend the EM34! Incidentally, if you download the October 1951 issue of "Electronic Engineering" from the World Radio History website, there's a full circuit of a piece of apparatus used for locating structural faults in roads using ultrasonics, and this uses a variant of the circuitry around V5, V6 and V7 as well! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed! Last edited by Chris55000; 12th Mar 2023 at 2:29 am.

12th Mar 2023, 8:43 am	#9
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 7,924	Re: Cossor Cossor telecheck and marker generator 1322 Hi Folks, I believe I have one of these units, not used in many years, but a useful piece of kit. I also have the manual somewhere. The output socket was a peculiar co-ax socket that was difficult to source. I'll have a look for it on my return home Ed