[apERNA1985]

Thank you all for your responses. The power meter is on that side of the house. And it is the type that we've all discussed. But I've tried the radio all around my house and haven't seen much of a difference. I also own a 1970 Ford LTD, it's got the factory philco AM radio in it. My hippo starts to gain noise above 1010 wins, that's a radio station out of New York. It gets louder and louder and basically drowns out all the other stations. So I parked my car in the driveway and tune the radio to am 12:50 which is pretty much the only music station there is anymore except for when they put Cousin Brucie on on 770 Saturday nights. In my car I can hear 1250 fairly well it's a little bit of a week station but it's Audible. I put the hippo on the hood and the humming was so loud I could not hear the station at all. I took a small transistor radio and walked around the house with it and as some of you have said some radios are more susceptible than others, but I can usually get 1250 I'll be sometimes a little weaker or a little stronger but the hum isn't as overpowering as it is on the philco. I'm not sure if this helps. I have a Bendix AM radio that I can pull out of storage that hasn't been recapped but still works somehow on original electrolytics I can try that out next to the hippo.

MRFixR55

First that's a lot of information thank you. I'm actually an electrician by trade so I know exactly what you went through. I actually wired my parents addition at 12 years old, but it did take 3 tries to pass. One thing that is bothering me, I remember one of paper wax capacitors had wire wrapped around it. If I remember right the term for that is a gimmick. I did not reproduce that when I replaced that capacitor, I just installed a new cap in its place. Could this be the cause of my issue? Also I snapped a screenshot of the schematic I'm using. Is this c402 that you're speaking about? Is there any benefit to increasing the capacitor value on that particular one? I honestly wonder if there is a filtering or ground shielding issue that's causing all this. One thing I noticed is after using the radio for a while it seems like the hum gets worse. The tubes all test in the low to Middle range of good on my Sencore tc-136 and none of them have grid leakage but I'm wondering if one of them is breaking down, or if I just happened to get a bad capacitor and maybe as the radio is running it's letting more and more leakage come through. I am considering recapping the parts chassis. Other than the little terminal strip where the antenna Loop and the ground that goes to the chassis mounts the chassis itself is in good shape. Someone dropped the cabinet and broke the bakelite badly, that's why it became a parts set. It is a different revision I can get the number when I get home, but it still has the field coil speaker. I'm wondering if the loop antenna could have changed values during revisions? I was also considering doing all the revisions in the schematic. The schematic I have mentions each revision that was done to the chassis before they went to a permanent magnet speaker, I'm wondering, considering mine is the very first one maybe it will help with noise and fidelity?