Re: Field Telephone Type F Mk II - Help needed
The battery voltage should be 3V, but it may be ok with 4.5. If the current reaches to high values the granulated carbon my be damged, and you will need new transmitter capsules.
The ringers and inductor may need some cleaning and oiling. The cradle switch and the switch on the inductor may have some corrosion. A dash of WD40 could be what it needs.
dsk
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