Hello Bill,
I almost did not want to respond because I consider myself a "novice" still around all these experts.? But I decided to write anyways.? Just consider what I say with a grain of salt.
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I used to get a lot of private emails from a big Elmer on here named Chuck Carpenter (SK).?? He was a big fan of the diode peak detectors and "RF taps" to measure RF power.? I wish I still had his emails.
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Take a look at the RF probe from qrpguys.com
And they have an attenuator at qrpguys.com as well approved by Chuck as well.? The 10/20/30dB 50ohm attenuator.
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kc9on had a smt version of a rf peak detector/dummy load for QRP.? i built it.? my first SMT project.?? Not sure why KC9ON stopped making this kit.
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You probably know this already, so just ignore me for the silly questions:
- Did you compensate your probes?
- Lose connections on the cable?? (has been issue for me in the past)
- Cat or dog bite your cable?? (has been issue for me in past as well)
- 1M Inputs??? (Most scopes do not have 50ohm inputs)
- Probes and Scope on correct setting of 1X vs 10X setting?
- If scope is 100 MHz, are you using 100MHz probes?
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What frequency are measuring?
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Unless, you have 50-ohm inputs, they can only take so much power, so you may need to attenuate via an attenuator.? Best to read the manual to know how much the oscilloscope can take.
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I know in the Electronics of Radio book for NorCal 40A CW Transciever Kit for the Questions.? It wanted to use instead of a probe, a BNC tee - one end to scope and the other to a 50-ohm termination (dummy load).
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73 Daniel KK4MRN
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