Thank you,that would certainly cause problems. I discovered that the key contact resistance could affect the frequency of my Bud code practice oscillator. I began to get chirp from a bug and found that the resistance varied between dots and dashes. A good cleaning fixed this. If it can affect a simple code practice oscillator it might also affect a transmitter keying circuit.
I am a collector of telegraph keys in a small way (there are people with hundreds of them). I try to keep them in good condition. Most straight keys are pretty simple but resistance can get high if the various joints through which the current must flow become a little corroded. I mean to include bugs here since they sometimes have more complex current paths. one can check this with any VOM.
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On 12/30/2024 2:53 PM, n4buq wrote:
I think he meant that the key was closed, or at least at a very low resistance, when it was supposed to be fully open.
Barry - N4BUQ
I don't understand this. Low resistance, ideally NO resistance, of
the key contacts is their normal condition. What am I missing here?
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Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
