M. W. I. M. M. WANTED & Projects page.
Things done and things yet to do. If you can help with any info, I'd be most obliged
Wanted: Two plugs for the VRC-247A transceiver, one is a 7 pin push and twist type approx 19mm dia, the other a 5 pin type, approx 21mm dia, with keyway and a screw outer shell. If anyone can tell me type or has such in thier stock I'd be happy to purchase.
VRC247
156plug
Plugs, or more correctly, in line sockets for US set GF-11 transmitter. GF-11 is a 9 pin, about 2 inch dia. Happy to buy suitable connectors and pay any postage needed to get them here.
usplug1
W Type plugs for UK war time airborne gear, various pins and sizes. If you can help obtain any of these please let me know. Actually I need the Free sockets for these, ie I need the plugs that have the holes in them and the chassis mounted plugs with pins. I would also like to find the right angle or 90 degree shells or covers for them.

wtype

ALSO ... Any military sets, whatever Country, Service etc, always interested in any Clandestine, Spy or Special Forces sets, would also like to get examples of the following:

T1115....T1083.....ART-13 sets...

B2 supply plugs, psu, spares box and drop case.... supply plugs for Torn B ...

Headphone plugs for E10K rx....

I would like to complete my R-45/ARR-7 set-up so need the following:

Power Unit PP-32/AR
Mounting base MT-171/U
Mounting base MT-167/U

lead; RX to PSU, lead; ac supply PSU and chassis mounted plug for rx, 6 pin

RACAL INFO WANTED:

Info, circuits, layout connections etc wanted on the following : RT-351 VHF trancvr, Vehicle interface Unit 559, (all part of UK/VRQ 31C Mobile unit), TA4044 100W Amp, Vehicle Interface Box MA4106, Extended Control Unit MA4054, Exciter Amp Assy VRM4156/M, HF AAMTU 100W, AAMTU Control unit MA4142, Harness Box MA4005.

So do get in touch if you have any military sets to dispose of, I can collect or am willing to pay postage etc, whichever is the easiest. Even if I have a nice example already in the collection I may still know of someone else who is looking for such. It all helps in this often difficult world of collecting.

Send an e-mail to: Ben Nock, G4BXD

PROJECTS

Simple Racal 24V Battery Charger

A main problem with the Racal series of sets is that some need a 24v supply. Most have batteries and though its easy to get replacement D cells to renew old batteries the Racal chargers are not so common. One simple solution is used here. Take a standard wall mounted battery eliminator, find a 12v one rated at about 1 Amp, and with slight modification it can be used to charge the 24v units. The original circuit is given below.
racala
The moddified circuit is now given. Break open the moulded plastic case by cutting with a Stanly knife and remove the existing diodes and caps etc. A voltage doubler circuit is used and once the unit is resealed, with super glue, it makes a nice compact charger. The original lead probably had a miniature plug on the end. I replaced this with a pair of croc clips so that I can quickly clip the charger onto any of the various 24v batteries here. The diodes are 1N4007 and the caps can be anything, but equal, say 2200uf at 35V. racalb Of course the charger is not regulated. I would suggest you give all the batteries a good charge off a regulated supply, if they are 1700mA D cells then charge at 170mA for 16 hour, then use the simple charger when on holiday say just to top up the batteries as you use them. You could of course squeeze in a regulator circuit into the wall charger if you want.
Projects presently on the go here:

1: A replica Olga .........this is now on hold due to problems abroad

2: Restoration of a G and H2S station.

So far, I have the G and H2S indicators, some psu's and the rotating head of the scanner unit. If anyone has any info on the Type 51 I would welcome a copy. Also, circuits for the 182 H2S and the Type 62 and 95 Indicators for G.

********* Pictures by G4BXD are G4BXD copyright ********