06-08-2016, 07:10 AM
Hi and welcome,
Here's a diagram for your set: http://philcoradio.com/tech/images/87.jpg
At the front right side of the chassis there is a black metal box which terminals on the bottom. Inside it is where the filter condensers live for the power supply. Unsolder the connection on the bottom unbolt from the chassis. Place it in an oven in a pan lined w/foil for easy cleaning. Bake for 20min @225deg. Remove the bottom cover and terminal board. Use a large I hook, screw it into the center of the of the old condensers and pull! Remove all the innards and clean. Using the diagram rebuild this condenser bank with new 630v mylar caps. Reinstall and reconnect.
Question 1 Yes
1B 6' copper rod into the earth with clamp and wire.
1C Most of the time grounding the chassis to a good earth ground will improve performance and improve signal to noise ratio. Connecting it to the houses wiring ground is not all that great as it is a long path to the actual earth ground outside. And there can be a lot of RF noise on the AC mains wires. At RF frequencies your romex looks looks like a big coupling cap winding though your house picking up interference from lights, chargers, and sorts modern electrical devises.
2 It's there to shock the H**l out out of you! Sorry wrong answer! Check that 31 has been replaced. The LOC terminal can be used as a connection to use your house wiring for the antenna, not a great idea these days but in '28 it was ok for local reception.
3 Depends. Does the set break into oscillation when tuning?? If not the neutralization is ok.
3B No, RF signal generator or local station on or near that fq. 50-100microvolts or less
3C Analog AC volt meter set on it's lowest range.
My neighbor Jon did a great job on replacing those filter caps! http://philcoradio.com/phorum/showthread.php?tid=14665
GL
Terry
Here's a diagram for your set: http://philcoradio.com/tech/images/87.jpg
At the front right side of the chassis there is a black metal box which terminals on the bottom. Inside it is where the filter condensers live for the power supply. Unsolder the connection on the bottom unbolt from the chassis. Place it in an oven in a pan lined w/foil for easy cleaning. Bake for 20min @225deg. Remove the bottom cover and terminal board. Use a large I hook, screw it into the center of the of the old condensers and pull! Remove all the innards and clean. Using the diagram rebuild this condenser bank with new 630v mylar caps. Reinstall and reconnect.
Question 1 Yes
1B 6' copper rod into the earth with clamp and wire.
1C Most of the time grounding the chassis to a good earth ground will improve performance and improve signal to noise ratio. Connecting it to the houses wiring ground is not all that great as it is a long path to the actual earth ground outside. And there can be a lot of RF noise on the AC mains wires. At RF frequencies your romex looks looks like a big coupling cap winding though your house picking up interference from lights, chargers, and sorts modern electrical devises.
2 It's there to shock the H**l out out of you! Sorry wrong answer! Check that 31 has been replaced. The LOC terminal can be used as a connection to use your house wiring for the antenna, not a great idea these days but in '28 it was ok for local reception.
3 Depends. Does the set break into oscillation when tuning?? If not the neutralization is ok.
3B No, RF signal generator or local station on or near that fq. 50-100microvolts or less
3C Analog AC volt meter set on it's lowest range.
My neighbor Jon did a great job on replacing those filter caps! http://philcoradio.com/phorum/showthread.php?tid=14665
GL
Terry
