10-10-2026, 03:47 PM
Thank you all - Mike, MrFixr55, Rod, Richard, Dale, Arran, and I'm sure others I'm not immediately remembering for the assistance in getting this radio to this point.
I tested my theories today and found the oscillator without power with that wire severed so conclude that as was suggested, the voltage readings are not reliable with modern equipment on the 6A8 oscillator pins. So I did the best alignment I could without a separate vernier drive for the shortwave band, so we'll see how it goes. I'm going to try not to move it too much from AM anyway, given the touchy nature of the band switch.
Here's a recording of it playing while tuned into the AM transmitter nearby. I think the fidelity is reasonable given its age and prior repairs to the cone and lack of tone control.
https://youtu.be/ob20VDoIhtY
Still curious about people's opinions on the design of at least this chassis, and, I suspect, any Philco utilizing unit construction vs designs from other manufacturers. Did these more complicated designs pay off in terms of output/reception quality? Obviously they were more economical to make and more difficult to service.
Thank you all again for your expertise, patience, and time. Catch you on the next radio.
Best wishes,
Roy
I tested my theories today and found the oscillator without power with that wire severed so conclude that as was suggested, the voltage readings are not reliable with modern equipment on the 6A8 oscillator pins. So I did the best alignment I could without a separate vernier drive for the shortwave band, so we'll see how it goes. I'm going to try not to move it too much from AM anyway, given the touchy nature of the band switch.
Here's a recording of it playing while tuned into the AM transmitter nearby. I think the fidelity is reasonable given its age and prior repairs to the cone and lack of tone control.
https://youtu.be/ob20VDoIhtY
Still curious about people's opinions on the design of at least this chassis, and, I suspect, any Philco utilizing unit construction vs designs from other manufacturers. Did these more complicated designs pay off in terms of output/reception quality? Obviously they were more economical to make and more difficult to service.
Thank you all again for your expertise, patience, and time. Catch you on the next radio.
Best wishes,
Roy




