Old test equipment - UK Vintage Radio Repair and Restoration Discussion Forum

Dennis M · 28th Jun 2020, 8:10 pm

Sorting through the loft came across these items which I had forgot about for the last 40 years or so, even found some of my old amateur radio kit some of which I have had since around 1970.

Anyway, I was wondering just when these items date from.

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factory · 28th Jun 2020, 8:43 pm

The second one is an Industrial Electronics oscilloscope, I have one here.

There are some adverts here dating it to the late 1940's;

https://www.gracesguide.co.uk/Industrial_Electronics

David

Cobaltblue · 28th Jun 2020, 9:08 pm

Number 3 and 4 is a Cossor FM alignment generator Dated from around 1955 I will have to find the exact date on some documentation.

The 1324 is mentioned on the service information for the Cossor 1955 Model 524 but is not mentioned on the service data for the 1954 models 522 and 523 so looks like 1955

Cheers

Mike T

CambridgeWorks · 28th Jun 2020, 9:14 pm

First an af power meter with switchable impedance, 2.5 or 3 ohms to 20000 ohms and power ranges up to 10w.
Part memory, part from the dial figures.
An absorption meter, no batteries required.
An earlier version like the TF893 af power meter.
Rob

Dennis M · 28th Jun 2020, 9:31 pm

Thanks, I knew what they are but was interested in finding out when they were made.

The power meter is actually a TF893, have been back in the loft and found I have a photocopy of its Operating and Maintenance Handbook which looks to be dated 1956.

I keep finding kit I used to use, even have a Hi-Lo All-11 chip programmer hidden away that I bought for a specific job 19 years ago, when I bought it the supplier told me it was the first USB connected Hi-Lo programmer brought in to the country. Still boxed as new and works fine.

MotorBikeLes · 28th Jun 2020, 10:01 pm

If you want to part with that filthy Cossor, pm me.
Les.

Dennis M · 28th Jun 2020, 10:48 pm

Filthy

?

It was pretty much in that condition when I got it.

CambridgeWorks · 29th Jun 2020, 7:43 am

My mistake. The one I was thinking of is the TF893A then. Same style as the TF1041C vvm. Hinged top cover.
Rob

28th Jun 2020, 8:10 pm	#1
Dennis M Pentode Join Date: Jun 2020 Location: Bude, Cornwall, UK. Posts: 183	Old test equipment Sorting through the loft came across these items which I had forgot about for the last 40 years or so, even found some of my old amateur radio kit some of which I have had since around 1970. Anyway, I was wondering just when these items date from. [img]https://*********************/65535/50054765393_f9ea18f5ec_z.jpg[/img] [img]https://*******************/6553/50055587697_3528d15a0b_z.jpg[/img] [img]https://*******************/65535/50055586767_c381f2dd5a_z.jpg[/img] [img]https://*********************/65535/50054761918_a414f3ba75_z.jpg[/img]

28th Jun 2020, 8:43 pm	#2
factory Octode Join Date: Jul 2009 Location: Cheshire, UK. Posts: 1,733	Re: Old test equipment The second one is an Industrial Electronics oscilloscope, I have one here. There are some adverts here dating it to the late 1940's; https://www.gracesguide.co.uk/Industrial_Electronics David

28th Jun 2020, 9:08 pm	#3
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,866	Re: Old test equipment Number 3 and 4 is a Cossor FM alignment generator Dated from around 1955 I will have to find the exact date on some documentation. The 1324 is mentioned on the service information for the Cossor 1955 Model 524 but is not mentioned on the service data for the 1954 models 522 and 523 so looks like 1955 Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk Last edited by Cobaltblue; 28th Jun 2020 at 9:26 pm. Reason: sense then added more info on dates

28th Jun 2020, 9:14 pm	#4
CambridgeWorks Nonode Join Date: Jun 2010 Location: Spalding, Peterborough, Cambridgeshire, UK. Posts: 2,859	Re: Old test equipment First an af power meter with switchable impedance, 2.5 or 3 ohms to 20000 ohms and power ranges up to 10w. Part memory, part from the dial figures. An absorption meter, no batteries required. An earlier version like the TF893 af power meter. Rob __________________ Apprehension creeping like a tube train up your spine - Cymbaline. Film More soundtrack - Pink Floyd

28th Jun 2020, 9:31 pm	#5
Dennis M Pentode Join Date: Jun 2020 Location: Bude, Cornwall, UK. Posts: 183	Re: Old test equipment Thanks, I knew what they are but was interested in finding out when they were made. The power meter is actually a TF893, have been back in the loft and found I have a photocopy of its Operating and Maintenance Handbook which looks to be dated 1956. I keep finding kit I used to use, even have a Hi-Lo All-11 chip programmer hidden away that I bought for a specific job 19 years ago, when I bought it the supplier told me it was the first USB connected Hi-Lo programmer brought in to the country. Still boxed as new and works fine.

28th Jun 2020, 10:01 pm	#6
MotorBikeLes Nonode Join Date: Dec 2012 Location: Kirk Michael, Isle of Man Posts: 2,350	Re: Old test equipment If you want to part with that filthy Cossor, pm me. Les.

28th Jun 2020, 10:48 pm	#7
Dennis M Pentode Join Date: Jun 2020 Location: Bude, Cornwall, UK. Posts: 183	Re: Old test equipment Filthy ? It was pretty much in that condition when I got it.

29th Jun 2020, 7:43 am	#8
CambridgeWorks Nonode Join Date: Jun 2010 Location: Spalding, Peterborough, Cambridgeshire, UK. Posts: 2,859	Re: Old test equipment My mistake. The one I was thinking of is the TF893A then. Same style as the TF1041C vvm. Hinged top cover. Rob __________________ Apprehension creeping like a tube train up your spine - Cymbaline. Film More soundtrack - Pink Floyd