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the 921 uses 2N5026 the syncal 30 931 unit uses 2N5070 my devices ent south long ago it is very easy to put a stud rf device and use it that is what i just did only change is the emiter resistors

Dave, The TRA921 is a Syncal, just not a Syncal 30 like the TRA931 series. The TRA921 battery box was designed to hold three 6 Volt lantern batteries for a nominal 18 Volts. Tom

Does anyone have a spare working power supply board for sale? I have syncal30 that is dead and it was determined the power supply board is the issue.

Seems there is some confusion in relation to this topic. As G8OZH has pointed out the TRA931 is a Syncal radio. This operates on 24v and uses the 2N5070 transistors in the finals. The TRA921 is not a

HI to all, I have a Racal BCC 39 B with adaptive mode but I have a problem abaut the max power is 12 watt !! If someone have a set for repair I'm interesting to by it. This is the photo of my BBC 39

My manual stated it can run on voltage between 18 and 22 volts but aT 20 ? It popped so we kept it at 18.? and it works ok i'm running 18 volts and 3 amps. Its still running ok it just the watt out

thanks i apprecate that, are they easily available? so my tech could order them? Im going to have him check to mske sure i need them? he can evaluate the radio'

SYNCAL 30 is TRA-931 not 921 I think….. 73, John G8OZH Sent: 04 December 2014 13:36 To: Racal-manpacks@... Subject: Re: [Racal-manpacks] Re: Final transisters for racal 921 syncal 30

Dave,? With reference to your comment "I?did have an issue with the radio not being able to handle much over 18 volts. It would blow a circuit", what operating voltage are you assuming the radio is?

Many thanks for your reply. I will look at all the options you sent me. I did have an issue with the radio not being able to handle much over 18 volts. It would blow a circuit But Im not a

Hi, tom, my fumble fingers won out again! I hit the send key inadvertently before any text. I meant to advise the guys about the 2n3632 as a possible replacement for the 2n5070 but they have to be

Hi Don, Your messages do not have any text. Tom

Hi, my name is Don Davis . I think the finals need to be a matched pair. I once was looking for replacements for the 2n5070 transistors and found the ( i think) the 2n3632 could be used but they

On ebay Items are mine, from my own personal collection. Take a look :wink: Stay tuned . I will post many more

This is a nightmare zone as far as I am concerned. I have had a Syncal30 on the bench that keeps on blowing its finals for no obvious reason. Probably some kind of VHF resonance. Sources of

Hello!Im looking for some? proper final transisters- I need 2? for my tra 921 syncal 30 or a recommendation for a good more easily available good substitute ?I don't have the identifying? number

One difficulty you'll run into is the very limited space in that remote head 73 Eugene W2HX

It would seem to be possible to adapt any LCD module, with a daughter board between the LCD and the board, as long as you're willing to forgo the fancy lettered indicators and just get little dots for

There was a guy in the UK, Wales, I think, named Phil Ryder that had a bunch of the BCC39 stuff some years ago.... ?He wanted serious money for the radios as I recall. Ira Ira J. Moser Owner, MECO