Posted by
Barry N1EU on
Nov 28, 2007; 6:52pm
URL: http://elecraft.85.s1.nabble.com/K3-qsk-keying-loop-tp367451.html
K7GT obviously has the same concerns. Over the past decade I've used
a slew of Ten-Tec and Yaesu xcvrs interfaced to Ten-Tec, Alpha, and
Acom amplifiers via plug 'n play keying loops with uniformly excellent
performance.
The lack of QRO QSK with the K3 may be a big issue with some
prospective K3 contesters.
73,
Barry N1EU
>Don, in the email below, says that the time delay in the K3 will accommodate
a QSK amp. That is only partially true. The problem is in setting it
up. I could,
of course, put in a LONG delay but then QSK is gone. If I crank the delay down,
at some point I am relying on the RF sensing circuitry in my QSK amps to hold
the relays closed until RF is really gone from the input. That may work but I
would really prefer the sure-fire solution of a keying loop. This allows a QSK
amp to be set up optimally by just plugging in and does not require a scope
and a bunch of fuss. The QSK of my Tentec transceivers coupled with
either the Titan or Hercules II QSK amps is plenty fast for me as I
never go above 50 wpm anyway.
>For what it is worth, the Yaesu transceivers and their Quadra QSK amp use a
keying loop. It works great also. We used it in SS this year and had a ball.
I> am sure that the K3 will key perfectly with the yet-to-be-available Elecraft
amps, but it would be nice if interfacing with existing QSK amps could be
done in the obvious way.
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