Racal CT569 mains voltmeter

[ed731pdh]

I have a Racal CT569 badged mains powered test meter that is coming around to refurb, but am having issues getting a service manual for it off T'net. 

I don't suppose these units were badged under alternative names?

[Stockden]

Originally badged as Airmec 314A I think, though that doesn't seem to be any more helpful when it comes to searching.

Hugh

[trfh]

Folks,

A number like "CTxxx" usually refers to the military "common test" gear series. The military EMER docs that will tell you everything you need to know have the reference numbers "EMER T&M B260 to B269".

There's a pic of the Airmec 314 at http://www.thevalvepage.com/testeq/airmec/a314/a314.htm - which might help you confirm that yours is one and the same beast.

It looks like someone on the vintage radio forum bought a copy of the manual from Ben Duncan Research http://www.benduncanresearch.com/manuals.htm. You might contact him to see if you can buy a copy of him, and save the full cost of another copy from Ben Duncan.

Richard

[AlanBeckett]

Ah, so, it's a 314. Early ones are Rounded like Jon's Picture while later ones are more Square although they seem to be the same.
I have the Manual and one of each.
Herewith the Circuit. Not a lot to it really apart from an awful lot of Colvern Pots.

Alan

   

[ed731pdh]

Here is a quick photo of the perisher. Some of the pots have had better days and will need replacing as the carbon tracks are crackly in operation.

[ed731pdh]

Oh, and last service on the sticker reads June 90.....!

[AlanBeckett]

All the Pots are WW, mainly Colvern.

I see they changed the Probe Socket, and of course it's the 'Square' Version.

Alan

[ed731pdh]

Some more photos.