06-23-2023, 07:30 PM
Here where I stand with my 37-60 Philco.
I have a long 15ft wire on antenna terminal 1. Strung near the ceiling of my room. 2&3 are jumpered. 3 is grounded by a single 12 AWG wire to socket ground, same socket 2 prong plug is in.
Speaker is sitting separate about 3 ft from the radio. Doesn't have the tin shield box on it. Would not fit the new output transformer.
Have a shield on 6Q7Gtube. Shield wouldn't fit on the 6K7G tube. Tube too wide at top.
Replaced all electrolytic caps and paper caps. Replaced most resistors per previous posts.
Voltages seem okay except 6A8G, it's a little low.
Presently shortwave is better than AM, but I can only pick up strong shortwave at night with clear voices/music. SW during the day is weak. AM is nonexistent during night and day. Can barely hear a few positions where AM stations are. A lot of background noise, white static. I have checked the resistances of coils as shown on schematic a 2nd time. Did this before. I have not checked any mica caps
Have not done any alignment yet, don't have a sig gen or oscilloscope, just a DMM.
Here's what I measured.
I have a long 15ft wire on antenna terminal 1. Strung near the ceiling of my room. 2&3 are jumpered. 3 is grounded by a single 12 AWG wire to socket ground, same socket 2 prong plug is in.
Speaker is sitting separate about 3 ft from the radio. Doesn't have the tin shield box on it. Would not fit the new output transformer.
Have a shield on 6Q7Gtube. Shield wouldn't fit on the 6K7G tube. Tube too wide at top.
Replaced all electrolytic caps and paper caps. Replaced most resistors per previous posts.
Voltages seem okay except 6A8G, it's a little low.
Presently shortwave is better than AM, but I can only pick up strong shortwave at night with clear voices/music. SW during the day is weak. AM is nonexistent during night and day. Can barely hear a few positions where AM stations are. A lot of background noise, white static. I have checked the resistances of coils as shown on schematic a 2nd time. Did this before. I have not checked any mica caps
Have not done any alignment yet, don't have a sig gen or oscilloscope, just a DMM.
Here's what I measured.