[Elecraft] New K3 guide by KE7X

[Dave Hachadorian]

The KE7X Guide has an interesting discussion about the 
shortcomings of the K3's AGC in a CW pileup situation.  I have 
complained about this AGC issue several times, but there has not 
yet been any effective solution.

The K3's AGC, even at SLP=0 and THR=8, compresses CW signals at 
too low a threshold and too flat a slope.  Signals in a pileup 
are all mushed together by the AGC.  It's not an IMD problem, 
it's a compression problem.  The usual solution, turning AGC OFF, 
is thwarted by the AF Limiter's extreme distortion on even 
moderately loud signals, even at its max setting AF LIM = 030.

If you have extremely sensitive headphones, and a very quiet 
shack, you can turn AGC OFF and turn the overall receiver gain 
down to where the AF Limiter rarely triggers, but one shouldn't 
have to jump through these fiery hoops.  With a TS-850, you could 
turn AGC OFF, and a loud signal would not blow your ears off, and 
would not be severely distorted.  If they could do that in 1989, 
it should be doable today.


Dave Hachadorian, K6LL
Yuma, AZ



-----Original Message----- 
From: T Gahagan
Sent: Tuesday, May 31, 2011 12:06 PM
To: Elecraft List
Subject: [Elecraft] New K3 guide by KE7X

For those that don’t know about the new K3 guide by KE7X check 
out the link in this message.  Fred has done an outstanding job 
of explaining many of the intricacies of the K3 that have puzzled 
me.  Block diagrams and step by step instructions on just about 
every facet of operation are really helpful.  Fred’s guide doesn’t 
replace the K3 manual by any means but it sure  has helped me 
determine if I have my K3 set up properly for what I am trying to 
accomplish.  I have no financial interest in this product but 
thought reflector members might like to know about this new 
offering.

Todd, WA7U



http://www.ke7x.com/home/guide-to-the-k3
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: 
http://www.qsl.net/donate.html