06-10-2025, 05:36 PM
Morzh
There are only 7 wires coming off the transformer. 3 for B+, 2 for 115 in and 2 for 5V to the 80. Maybe there is another transformer under the chassis providing 2.5 volts to the other 4 tubes. I've used run/start capacitors to replace ballast resistors but don't think it would be practical in this case.
My main question is if this set was assembled as a model 51C, possibly near the end of the 51 chassis run? Only the model 52C shows in my searches so far, including radiomuseum.org and Philco Radio 1928-1942, originally by Ron Ramirez. I guess I'll have to clear my bench to pull the mess out to investigate further. Pictures forthcoming!
Arran suggests Philco used up a 51 chassis to complete this set.
I have an AK 20C that is mounted in an AK cabinet that was modified for the 20C panel to fit. The cabinet never had a chassis/panel in it previously and there are no signs of a tag or label on the underside of the lid. This implies an employee cobbled together components to make a radio for his use.
There are only 7 wires coming off the transformer. 3 for B+, 2 for 115 in and 2 for 5V to the 80. Maybe there is another transformer under the chassis providing 2.5 volts to the other 4 tubes. I've used run/start capacitors to replace ballast resistors but don't think it would be practical in this case.
My main question is if this set was assembled as a model 51C, possibly near the end of the 51 chassis run? Only the model 52C shows in my searches so far, including radiomuseum.org and Philco Radio 1928-1942, originally by Ron Ramirez. I guess I'll have to clear my bench to pull the mess out to investigate further. Pictures forthcoming!
Arran suggests Philco used up a 51 chassis to complete this set.
I have an AK 20C that is mounted in an AK cabinet that was modified for the 20C panel to fit. The cabinet never had a chassis/panel in it previously and there are no signs of a tag or label on the underside of the lid. This implies an employee cobbled together components to make a radio for his use.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
