Replace electrolytics, resistors and relay on the QSK board, they are
pushing 30 years old.
Carl
KM1H
----- Original Message -----
From: "Vasiliy - K3IT" <gokoyev+k3it@gmail.com>
To: <amps@contesting.com>
Sent: Sunday, February 10, 2013 11:38 PM
Subject: [Amps] hot keying the amp?
the new amp LK500ZB and I continue our bonding process :)
I've wired up the QSK circuit and recorded the CW signal on my scope. I
can see a small bump after each dot and dash, like on the picture here
http://goo.gl/74HO3
Does it look like hot keying the amp? There is also a very sharp fall
off
- the dot is supposed to be 87ms but cut off early. Is anybody familiar
with the QSK circuit on LZ500ZB and/or have words of wisdom? I wonder if
the QSK circuit has been played with and I can't operate it like this.
(I'm really knew to "QRO" stuff).
73
P.S. Thanks to all for answers regarding the LK500Z output on 10m. I've
been testing and re-testing and now consistently get good power on all
bands.
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