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Tom: Awesome. '73's Get Outlook for Android

Hi Peter, I don't have your email address but here it is as an attachment. I can't vouch for this schematic. Tom Bryan N3AJA

Hi Peter, I will send you a PM with a schematic that I have for the Racal speaker. Tom Bryan N3AJA

The external speakers are powered. To: "RacalRadio" <[email protected]> Sent: Monday, June 29, 2020 12:42:09 PM Subject: Re: [RacalRadio] TRA 921 Speaker Pic Slowly getting my TRA931 into working

Slowly getting my TRA931 into working condition. Is the audio output really as low as what the manual states ? 30mW with 200uV RF input, fix AF output 50mW into 50 ohms ? Does anyone of the schematic

And I bought one... KL7AM To: "RacalRadio" <[email protected]> Sent: Sunday, June 28, 2020 11:14:13 AM Subject: Re: [RacalRadio] TRA 921 Speaker Pic Tom, That looks more like it, the red with white

Tom, That looks more like it, the red with white stripe mic insert is the dynamic type used with a lot of the Racal kit of that vintage, and also looks like the correct 6 pin plug. 73 Al G8LIT

See this one https://www.ebay.com/itm/Racal-Radio-Handsets-for-TRA931-TRA967-and-other-radios/333583442823 Tom

The mic insert is a carbon type (red with a black stripe), and will not work with the Syncal set; the handset is probably the one used with the UK's A-41 No2 manpack, which used a carbon mic element,

That connector looks different on the outside

Found a shorted transistor in the Speaker amplifier. Subbed a rep lacement in and now have lots of audio. Listening to a net here on 3.933 and the receiver sounds very good and on frequency as well!

The one on the right is either an MA909 or MA988. The one on the left I don't recognize. The MA909 is wired B +supply, F audio in, D ground and is 18V The MA988 is wired B +supply, F Audio in, D

Agree, 6 pins for the TRA931 How about this handset.? It has 6 pins and a white strip on the mic. https://www.ebay.com/itm/Racal-Radio-Handsets-for-TRA931-TRA967-and-other-radios/333583442823 Tom

Yes it is 6 pins, but so too is the clansman of the same period. The connectors on my clansman audio devices(as well as early Southcom) look identical. But as Tom says, the index pins are different.

What about the extra pin on Clansman Tom, I thought the period of racal kit he is looking at was 6 pin? StuartG0TBI

The best and cheapest place for brand new military connectors (or indeed any other type of connector), is Servo and Electronic Supplies in Lydd, Kent. I have known this company since 1965 when I first

The black stripe on the microphone inset indicates it is a carbon granule type. Andy G8JAC

I think this is the correct handset. https://www.ebay.ie/itm/LARKSPUR-RADIO-HANDSET-ASSEMBLY-PLUG/174330444053 Tom

The connectors are fairly easy to come by.? Clansman connectors will work, but the keying may be different.? You may have to grind off a key or two to get it to fit.? Do not force the connector on