06-26-2023, 03:15 PM
MrFixr55
Thanks for the list. Im sure the order of operations will come in handy. I kinda saw already that you have to heat those Bakelite boxes and push out the old caps. All of the caps, Bakelite and filters will be restaffed in original housings. Lotsa work ahead for sure.
I have also noted the main ganged tuning cap is loose. Looks like some kinda gromets are toast too.
However I have a few questions.
1) The coils that go open. I assume its just the outer coil that goes? Have you got a link to rewinding info?
2) Do the transformers go? Someone said the Philco transformers are pretty tough and rarely go. Its that the case?
3) You say replace all caps. does that include the 110pF ones? Are they mica? In communications received they seldom go.
4) how fussy is this unit for tolerances? If I replace a 51K resistor with a 50K or 110pF with 100, is it going to cause issues or is it pretty broadly tolerant?
Cheers
Thanks for the list. Im sure the order of operations will come in handy. I kinda saw already that you have to heat those Bakelite boxes and push out the old caps. All of the caps, Bakelite and filters will be restaffed in original housings. Lotsa work ahead for sure.
I have also noted the main ganged tuning cap is loose. Looks like some kinda gromets are toast too.
However I have a few questions.
1) The coils that go open. I assume its just the outer coil that goes? Have you got a link to rewinding info?
2) Do the transformers go? Someone said the Philco transformers are pretty tough and rarely go. Its that the case?
3) You say replace all caps. does that include the 110pF ones? Are they mica? In communications received they seldom go.
4) how fussy is this unit for tolerances? If I replace a 51K resistor with a 50K or 110pF with 100, is it going to cause issues or is it pretty broadly tolerant?
Cheers
Current Restorations In Process
RME DB22A - Lafayette KT200 - Hammerlund HQ 140 XA
Johnson Viking II - Viking VFO 122 - Johnson Ranger
Philco Model 90 Low Boy
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