[Elecraft] K2 Preamp on and huge key clicks. Normal?

[Robert McGwier]

Indeed.  The wonderful sensitivity and MDS of the K2 is basically unneeded
on a lot of the lower HF amateur bands (unless you are listening to a
receive type antenna and need all the gain you can get).  So take advantage
of another fantastic feature of the K2, its incredible linearity and
dynamic range.  Turn the preamp off, raise the IP3, and watch the
nastiness disappear.

Bob
N4HY


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net]On Behalf Of Ron D'Eau Claire
Sent: Thursday, June 03, 2004 5:56 PM
To: elecraft at mailman.qth.net
Subject: RE: [Elecraft] K2 Preamp on and huge key clicks. Normal?


Yes! You were simply overloading the receiver. Your reading of "S9+40" even
if high, suggests that.

That's why there's an on/off switch on the preamp. It's only needed up on
the higher bands where the noise levels are really, really low and you are
digging for a really weak signal. 20 is sort of a transition band. It can
have low enough background noise that some receivers will hear better with a
pre-amp, but I've not yet experienced that with the K2 with any sort of
decent antenna.

N73, Andy, KU7T


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