"Those bias cells had such low burden upon them by virtue of their position in the circuit I don't think they were ever really thought of as consumables."
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Started this discussion. Last reply by George Aug 31, 2022. 5 Replies 0 Likes
Hello from Canada.Throughout my life I’ve always heard about McMurdo Silver and E.H. Scott radios but have never encountered one at all, least of all one which I could afford.Does anyone have any…Continue
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"That's a Mallory bias cell, I believe those were rated at 1.25 volts."
"Yes those Candohm resistors always seem to fail despite their apparent rugged appearance in many other radios. For durability it’s always wise to choose replacement resistors with an increased wattage rating."
"Tale to share. Some years ago I would work on tube radios over the winter. One of the more involved sets was a Hallicrafters SX28A which I did for someone.
The radio has never seen a malicious soldering iron in it’s life but due to the…"
"Randy, and this is a general rule I’ve worked by in the past in my employment, all passive components are suspect and should be inspected one by one. I used to work at a military contractor many years ago and it was this same approach we used…"
"Screen to Cathode bypass cap in a 6K7 first audio? That sounds very unusual since 6K7 tubes are variable-Mu and not generally suitable for audio only (which typically use straight-Mu gain tubes).
If it's a dual cap there usually is a common…"
"Ampifier will run with only half the output power due to the lower load impedance with possible audio distortion at higher levels. Since the human ear barely discerns a 3 dB change in volume and a halving of power represents a 3 dB change in power,…"
"Gorgeous!! Are you here in Canada?"
"This is why I use Duck Duck Go along side Google."
"I haven't seen the radio but i'm going to assume the variable capacitor is a typical type used in all north American receivers. These variable capacitors have slotted meshing plates which allow for trimming of the alignment in parts of the…"
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