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Philco 90 Oscillator Resistor Question
Joe
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Posts: 31
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Joined: Feb 2012
#1

02-10-2012, 08:59 AM
Can anyone tell me if I should replace the 5000 ohm resister that feeds the #27 osc tube with a lower value? I'm asking because on a website http://www.rickstuberadios.com/ he mentions that the rushing noise in his Philco 89 was due to the 15,000 ohm resister resistor that fed the #36 tube osc changing to a higher value.

He changed the 15K to 7.5K. I am getting a rushing noise & drop in volume in my Philco 90 similar to what was described on the website & I was wondering if I should change my 5K resistor to say 3K. Any one else have this problem or familiar with it?

My Philco 90 is the type with one #47 tube

Thanks......Joe!
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Carl Travis
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Posts: 205
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Joined: Jun 2006
City: Moundsville State, Province, Country: WV
#2

02-10-2012, 11:47 AM
Which variation of the model 90 are you working on?
http://www.nostalgiaair.org/PagesByModel...013881.pdf
Does it have 2-45's, 1-47 or 2-47's for the output?
Carl
Northern Panhandle, WV
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