UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Amateur and Military Radio

Notices

Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

Reply
 
Thread Tools
Old 21st Jun 2018, 4:28 pm   #1
MW0CDO_Paul
Diode
 
Join Date: Jun 2018
Location: Port Talbot, Neath, Wales, UK.
Posts: 2
Default Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Afternoon all.

I have the following equipment but absolutely no info.

Iret PRC 638
Racal TRA 967
Thomson TRC 300
Antennae AT51 & AN224B

Rather than post pictures here, please see my MS OneDrive:
https://1drv.ms/f/s!AimTvkgqP65ii8tfFHj8KCMaRBieVQ

The internet searching has revealed remarkably little, just very basic specifications.

I would like to press these into service as I believe they all work.. except the battery packs of course!

In particular I would like to know what the connections are for the various multiway sockets so that I can interface a mic, speaker, audio to from computer, ptt etc.

Even better would be circuit diagrams / schematics, user instructions etc.


Many thanks in advance for any information!


Paul MW0CDO ex GW7LHI.
Attached Thumbnails
Click image for larger version

Name:	WP_20180619_001.jpg
Views:	95
Size:	55.8 KB
ID:	164980  
MW0CDO_Paul is offline   Reply With Quote
Old 21st Jun 2018, 4:50 pm   #2
Sean Williams
Dekatron
 
Sean Williams's Avatar
 
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,191
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

I used to own a TRA967 - there is a very annoying sidetone that is transmitted with the audio - for the life of me I cannot remember the exact component I lifted, but from memory it was a preset pot inside the radio - lifting the wiper of this pot disabled the sidetone (essential for conversing with non military sets)

I think the wiring of the microphone connectors on these sets follow the same pattern as the Clansman range of equipment

Cheers
Sean M1ECY
__________________
Engineers make things work and have spare bits when finished
Sean Williams is offline   Reply With Quote
Old 21st Jun 2018, 4:54 pm   #3
Sean Williams
Dekatron
 
Sean Williams's Avatar
 
Join Date: Feb 2005
Location: St.Ippolyts, Hitchin, Hertfordshire QRA IO91UW
Posts: 3,191
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Take a look at this

http://radiohistory.uk/manuals/racal/TRA967.htm
__________________
Engineers make things work and have spare bits when finished
Sean Williams is offline   Reply With Quote
Old 21st Jun 2018, 5:12 pm   #4
G8BBZ
Pentode
 
G8BBZ's Avatar
 
Join Date: Oct 2005
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 124
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Hi,
The Technical Manual for the Racal TRA967 is available to download from the VMARS site but it is in the Members Only area so you will need to join to download it - assuming you are not already a member that is.
The IRET and Thomson radios are rare beasts indeed in this country but if you do join VMARS it would be worth posting a request on their forum as someone in that group may know more.
Good Luck
Peter G8BBZ
__________________
Peter G8BBZ
G8BBZ is offline   Reply With Quote
Old 21st Jun 2018, 5:17 pm   #5
ex seismic
Hexode
 
Join Date: Sep 2009
Location: Tonbridge, Kent, UK.
Posts: 322
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Racal audio gear doesn't follow Clansman wiring and the plugs have different keying and may only have 6 pins. A Clansman plug can easily be modified to fit by removing the relevant key. The seventh pin is the centre one, easily removed if necessary.

Gordon
G7KNS
ex seismic is offline   Reply With Quote
Old 21st Jun 2018, 6:23 pm   #6
dodgy-dxer
Pentode
 
dodgy-dxer's Avatar
 
Join Date: Mar 2008
Location: Newmarket, Suffolk, UK.
Posts: 236
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Have you received the 2 emails with the translation of the Arabic on the Iret set I sent you this morning?

73 Fred
G4BWP
dodgy-dxer is offline   Reply With Quote
Old 21st Jun 2018, 6:57 pm   #7
G3VKM_Roger
Hexode
 
G3VKM_Roger's Avatar
 
Join Date: Jun 2012
Location: Southeast Norfolk, UK.
Posts: 406
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Hi Paul,

Send me a private message via the group with an e-mail address and I will send you the full manual for the TRA967. (It's not the VMARS copy).

73

Roger/G3VKM
G3VKM_Roger is offline   Reply With Quote
Old 21st Jun 2018, 11:49 pm   #8
MW0CDO_Paul
Diode
 
Join Date: Jun 2018
Location: Port Talbot, Neath, Wales, UK.
Posts: 2
Default Re: Military Radios PRC 638, TRA 967 & TRC 300 any info please?

Many thanks to Fred, Sean & Peter for the very useful info.

Fred, I have indeed received both of your emails.
Much obliged!

Peter, I understand that the Iret radio was simply thrown away as troops sought to escape quickly.

Paul MW0CDO / GW7LHI.
MW0CDO_Paul is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 11:18 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright ©2002 - 2018, Paul Stenning.