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48-472-122 FM issue
Radioroslyn
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Posts: 7,285
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Joined: Dec 2009
City: Roslyn Pa
#5

02-15-2019, 08:18 PM
Try touching pin 1 of the 12au6 fm rf amp to hear if the signal increases. If not use a cap connected to pin 5 of the 12au6 and touch it. his should give you the same result as touching pin 8 of the 14F8. Also measure the voltage around the 12au6 is see if they are reasonable. Methinks your osc is ok too.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
(This post was last modified: 02-15-2019, 08:18 PM by Radioroslyn.)
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Messages In This Thread
48-472-122 FM issue - by Eric Adams - 02-14-2019, 04:25 PM
RE: 48-472-122 FM issue - by PhilcoMike - 02-14-2019, 04:47 PM
RE: 48-472-122 FM issue - by Eric Adams - 02-14-2019, 04:54 PM
RE: 48-472-122 FM issue - by PhilcoMike - 02-15-2019, 04:50 PM
RE: 48-472-122 FM issue - by Radioroslyn - 02-15-2019, 08:18 PM
RE: 48-472-122 FM issue - by Eric Adams - 02-20-2019, 11:32 AM
RE: 48-472-122 FM issue - by EdHolland - 02-20-2019, 02:47 PM



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