[Elecraft] K3 FD report in high RF (K3 vs Flex 6xxx)

[Bill Blomgren (kk4qdz) via Elecraft]

with that sort of power level, you are looking at several devices failing, and making the system deaf as a post.

 KK4QDZ - Now with Extra Class Priv's, and a tiny KX3 to enjoy them!
      From: David Gilbert <xdavid at cis-broadband.com>
 To: elecraft at mailman.qth.net 
 Sent: Thursday, July 2, 2015 3:46 AM
 Subject: Re: [Elecraft] K3 FD report in high RF (K3 vs Flex 6xxx)
   

"Maybe it was something with the setup."

That's an understatement.

Running kilowatt-level power on the same band to two antennas only 20 
feet apart is simply crazy.  I don't know what input protection the 
KX3's have, but they almost certainly kicked in and being inherently 
non-linear they would have generated all sorts of high level trash on 
the front end.  It would be interesting to see the math, but I think 
you're lucky you didn't blow the heck out of both front ends in spite of 
the protection.

Dave  AB7E






On Jul 1, 2015, at 9:33 PM, Matt Z via Elecraft <elecraft at mailman.qth.net> wrote:

> KL7AA had two elecrafts at FD, a KX3 for SSB and a K3 for CW, and interference was a definitely noticed.  Each rig was wired to separate 3 element stepIRs, about 20 feet apart.  One rig used the elecraft 500w amp and one used a 1.5kw amp.  The two elecrafts could not operate on the same band at all.  Maybe it was something with the setup.

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