[Elecraft] K-3 RF Gain Calibration

[N2TK, Tony]

Maybe the S-meter needs to be calibrated as per the manual after the RF Gain
test?
With no antenna attached on 20M I get no reading on the S-meter. With the
antenna connected and no signals the S-meter kicks up to about S3. With a
50uV. signal the S-meter reads S9. That seems correct. 

73,
N2TK, Tony

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of RLVZ at aol.com
Sent: Sunday, March 14, 2010 2:22 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K-3 RF Gain Calibration

Mike,
 
Are you saying that your S-Meter reads 3-4 s-units MORE noise level now  
that you did the RF Gain calibration with the XG-2?  I was going to make
the 
same adjustment with my K-3.  But if you are getting a 3-4  s-unit higher 
noise level after the adjustment has been done... I won't be  making the 
adjustment as my K-3 is already more sensitive than I need on the low
bands.  
I'd use a 20dB ATT on the low bands often if I had one  available.  Perhaps 
one day we'll be able to change the K-3's RF Gain per  band via software to 
help adapt to our local noise environment.  (mine  is very noisy on the low 
bands with thunderstorm QRN off the  Atlantic).  For those who may be 
concerned, yes I do use the RF  Gain control.
 
73,
Dick- K9OM
 
 
Sorry if this comes across more than once, I'm having some e-mail  issues.

I just did an RF gain calibration, using the XG2 and the K3  utility on 
my kit K3 (built in Sept. '09).

There seems to be a  dramatic difference in my noise level, 3-4 s units, 
with a calibrated  s-meter. I think I can pull more stuff out of the 
ditches and weeds  now.

Does that seem reasonable?

73, Mike  NF4L




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