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Sorry to interrupt the silence....

 

... but I have a NC-125 and I am having trouble getting the Pitch Control (BFO) to work.
?
If anyone has one (NC125)? I'd ask you to pull the plastic knob & measure the resistance from chassis ground to the brass shaft and report here or email me at w8rmv at arrl dot net.
As I look at the construction, it looks like the brass shaft should be at or near ground level.
?
Coil L18 is supposed to be center tapped, but my 125's also has significantly more resistance on one side than the other.? Maybe I have a bad L18.
?
Still searching for an answer, as the rest of the NC125 works great!
?
73 - Bob W8RMV
?
?
?
 

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Sorry I don't have one, but my Elmer W1LHY did in 1955. I wondered, how did it come to be? Aha, an engineer designed it! I will be an?engineer! And I did! First job out of school was National.? 73 Richard N1AA

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From: [email protected] <[email protected]> on behalf of Bob W8RMV via groups.io <W8RMV@...>
Sent: Monday, January 13, 2025 2:02:32 PM
To: [email protected] <[email protected]>
Subject: [National-Amateur-Radio] Sorry to interrupt the silence....
?
... but I have a NC-125 and I am having trouble getting the Pitch Control (BFO) to work.
?
If anyone has one (NC125)? I'd ask you to pull the plastic knob & measure the resistance from chassis ground to the brass shaft and report here or email me at w8rmv at arrl dot net.
As I look at the construction, it looks like the brass shaft should be at or near ground level.
?
Coil L18 is supposed to be center tapped, but my 125's also has significantly more resistance on one side than the other.? Maybe I have a bad L18.
?
Still searching for an answer, as the rest of the NC125 works great!
?
73 - Bob W8RMV
?
?
?

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