[Elecraft] "Hot" K3

[W0MU Mike Fatchett]

Have you calibrated it with a known source?  Elecraft makes a nice signal
generator kit that works great for this.  You do need to enter the gain on
the 5 pole filters.  They are negative numbers so that might change things.

Do you happen to have the pre amp on.  It is generally not needed on 20-160.



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W0MU.NET or  67.40.148.194


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don Rasmussen
Sent: Sunday, March 15, 2009 9:05 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] "Hot" K3


Guys,

My new K3 #2308 shows two to three S-units high as compared to my other HF
radios, and lots of hiss in the speaker audio at low AF levels. It acts as
if I had maxed out the value for the crystal filter gain in the firmware, or
had the PreAmp on. I have made sure the gain is at zero and moved the
crystal filters (12.5 and 2.7) into different spots, but still too hot. 

I can make it more normal with respect to AF gain and S-meter if I turn the
ATTenuator on. I have the 2.7 filter installed and have not added any gain
in the FL1 filter definition. I did a master reset and also loaded old
versions of the firmware but no improvement was noted. 

I have emailed my request to K3Support at Elecraft.com, but want to post this
to the list - anyone seen their K3 with these symptoms?

Thanks,
Don Rasmussen
Carlsbad, Ca.
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