[Elecraft] K2 Transmitted Phase Noise?

[Ed Muns]

Yes and no.  The transmitted phase noise on the K2/100 is well within FCC
regs.  However, when driving a 1.5 KW linear in close proximity (few miles
line-of-sight) to other contesters, it was bothersome for weak signal
reception.  That was the primary reason I abandoned the K2/100 for SO2R and
contesting (at home) in general.  As you know, it has an excellent receiver
and handles DX and contest expedition pile-ups excellently.  It just isn't
friendly with other close-by receivers when running > QRP.  It should be
fine if you do another QRP contest expedition.  ;>)
 
73,
Ed - W0YK


  _____  

From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Kenneth Silverman
Sent: Sunday, 05 October, 2008 07:53
To: elecraft at mailman.qth.net
Subject: [Elecraft] K2 Transmitted Phase Noise?


Do K2/100's have a known transmitted phase noise issue?   I looked at the
reflector archives, and there was some comment by K6SE (SK) in 2005 that
seemed to indicate there was, but the scenario seemed rather specific.
 
Last year as C6ATA I ran in-band SO2R on 40m using a K2/100 (s/n 2773) and a
TS-850.  Both were low power.  The antennas were verticals on the beach, and
a dipole about 400' away.  When transmitting on the TS-850, I could listen
to the weakest of stations on the K2 within 2 kc of the TS-850's freq.
Though when transmitting on the K2, there was wide-band noise on the TS-850,
covering up a layer or two of signals.  It didnt matter which rig was using
which antenna, the results were the same.  I tend to think this was a TX
phase noise issue, and not a more robust RX in the K2.
 
Can anyone shed some light?  If this is an issue, is there any resolve?  
 
Many thanks, Kenny K2KW
 
 

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