09-27-2023, 02:16 PM
The receiver uses British Octal base valves, but the circuit is very similar to the US battery valves. The British valves have a 2v heater voltage (I think the US ones are 1.5v max)
I found a Philco circuit (P-429) which uses the same chassis as the BP413 but with 1A7EG, 1N5EG, 1H5G and15EG valves fitted. The pins are different to the British valves, so the wiring under the chassis is different.
Steve
I found a Philco circuit (P-429) which uses the same chassis as the BP413 but with 1A7EG, 1N5EG, 1H5G and15EG valves fitted. The pins are different to the British valves, so the wiring under the chassis is different.
Steve
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
