Type 33 field phone battery

[jackboot]

This battery came with a type 33 field phone I have owned for quite sometime. I was wondering if anyone new who made these? It is set up to use 4 modern C batteries. Homemade job?
Thanks Jackboot

[jackboot]

Field phone battery

More pics

[jackboot]

Field phone battery

Last two pics. Thanks jackboot

[kabel]

The carbon transmitters for the FF-33 (used in the FF-33) are designed for 1.5V

Using more than 3V is definitly a great risk for the carbon element.

Unoriginal transmitter may require higher voltages.

A good idea may be to measure the milliamps going from the battery when speaking.
An average between 20 and 30 milliamps are ideal, 50 and more are really bad, to little and it will not work properly.

[jackboot]

Field phone battery.

Thank you sir. Actually this set up is using 3 1.5V C batteries. As I stated it was with the phone when i purchased it. Jackboot

[Funksammler]

It looks like somebody hollowed out an original (post war) battery housing. I don't think it was mass produced.

regards,

Funksammler

[jackboot]

Field phone 33

Thanks funksammler. So a hollowed out post war battery with reproduction label. Then constructed using three C batteries. Home made job. Why three and not just one C battery with 1.5 volts? Thanks Jackboot

[kabel]

Thanks funksammler. So a hollowed out post war battery with reproduction label. Then constructed using three C batteries. Home made job. Why three and not just one C battery with 1.5 volts? Thanks Jackboot

The only good reason might be to get voltage enough to use a modern transmitter (microphone) with electronics.

I do not like to admit it, but the sound gets better.

[jackboot]

Field phone 33

Thank you kabel. Jackboot