field telephones

Vic Eaton · #1 19-12-05, 23:12

HELLO ALL
Can anyone tell me what voltage the standard field telephone should be i have two that have the morse key and not the signal generator there are plenty of instructions but no guid to the operating voltage
regards vic eaton uk .

Jon Skagfeld · #2 19-12-05, 23:29

Vic:

Brit D Mk V Fd Tels were powered by 2 x 1.5 "X" cells= 3 Volts.

The switchboard to which they were commonly hooked up, were powered by 3 x "X" cells= 4.5 Volts, the extra voltage encompassed the night alarm circuit, panel lights, and ringer apparatus.

HTH

Regards

Vic Eaton · #3 21-12-05, 22:25

HELL JON
Thanks for the reply does that mean that these cannot work without the switchboard i did have two other phones that had a signal generator just a small handle on the front to turn and they worked fine with just a single wire between them. they did not have a morse key though like these TYPE DV it doesnt sound as though these work in the same way.
REGARDS VIC UK.

Jon Skagfeld · #4 22-12-05, 05:03

Quote:

Originally posted by Vic Eaton
HELL JON
Thanks for the reply does that mean that these cannot work without the switchboard i did have two other phones that had a signal generator just a small handle on the front to turn and they worked fine with just a single wire between them. they did not have a morse key though like these TYPE DV it doesnt sound as though these work in the same way.
REGARDS VIC UK.

Ummm, Vic...I don't think we can sort this out unless you can advise exactly what field tele and field switchboard we're talking about.

The D Mk Vs will work 'twixt each other with a 3V power source (2 x "D" cells).

The switchboard's voltage shouldn't interfere with the operation of either.

Carry on, mate!

Vic Eaton · #5 24-12-05, 16:55

HELLO JON
Thanks again ill try them out and see if i get anything ill take this moment to wish you a happy christmas and a good new year vic
PS I would like to see a picture of your radio truck .
regards vic uk.

Jon Skagfeld · #6 25-12-05, 00:18

OK, Vic...as soon as I get technically competent in order to be able to post a pic on the net, I'll do it!

Til then, Merry Christmas to you guys in my mother country (Luton, Beds).

Neil Ashley · #7 28-03-07, 13:53

Does anyone know any thing about Type F Field telephones i.e.
when they were introduced and if particular types of formations used them.

I have a picture which appears to show them in use in France in 1940, but there seems to be no pattern to how they allocated letter designations to the various phones.

For reference the type F is the bakelite type in a wooden box.

Godwin Hampton · #8 28-03-07, 21:04

Neil,

The F Mk. II were bakelite, and replaced the aluminium Mk.I probably because aluminium was badly needed elsewhere. Even the D Mk V originally had a cast aluminium case, later replaced by sheet steel. I would expect the aluminium ones to have been replaced on the production lines around 1940. They were both pre-war designs, and the F Mk II was still in use in the Sixties. The D Mk.V was used at least for the duration, and possibly beyond.

Hope this helps to make up the picture.