From: Bill Aycock <baycock@direcway.com>
I am not too sure the ARRL-QST staff has anyone who understands this
subject and the ways to measure it. I have been puzzled/confused by the
scope depiction of the key closure- resulting waveform shown in QST for
some time. Take a look at the ORION review in the recent QST (January, pg
66, fig. 2). There is a delay from key closure to signal, which is
possible, but how and why does the signal start down BEFORE the key is
opened?
This question was addressed (beat to death?) on the Ten-Tec forum. The
signal doesn't "start down BEFORE the key is opened". The key closure is
the negative going part of the upper square wave. There is a 20+ msec delay
between initial key closure and rf output. "Cut and paste" to get the scope
photo? I think not.
73,
Barry N1EU
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