[Elecraft] [KX3] KX3 & CQ-160

[Igor Sokolov]

My experience is a bit different.
  I was using KX3 in the recent UBA contest QRP entry from the center of 
a big city. There were several times when I had to turn PRE off on 20m 
band and switch ATT on on 40m band to cure overloading. This never 
happened in the past with K3. On the other hand we have made over 6000 
QSO in CQWW CW last November operating from Maldives. This operation was 
on all bands 160m included. Never experienced overloading there but most 
of the signals were below S9+10.

73, Igor UA9CDC

01.03.2017 8:58, 'Richard Sharp, KQ4KX' kq4kx at arrl.net [KX3] пишет:
>
> Just thought I’d drop a note on my experience using my KX3/PX3 setup 
> for the CQ-160 contest this past weekend.
>
> I operated this contest last year using a 100W radio but decided to 
> try QRP this year. I’m fortunate to be able to use an insulated AM 
> broadcast tower (220’ w/120 ground radials) and had a very nice 
> experience last year (2016).  So, thought I’d try QRP with my KX3 this 
> year (2017).  My setup is a small table in front of the AM tower’s ATU 
> connected to the tower side of a blank J-Plug inserted into the jack 
> (electrically disconnects the AM tuning unit from the tower – and yes, 
> the AM station was QRT during this time) using the dual banana adapter 
> on the KX3 with short leads going to ATU ground and the tower side 
> J-plug terminal.  The KXAT3 had no problem tuning the antenna (tower) 
> for 160m.
>
> First off, the KX3’s receiver was fabulous – this is the first time 
> I’ve used my KX3 during such crowded conditions and also with such a 
> good antenna where signals were strong.  It handled the conditions 
> very well.  I found operating with the RF gain at -30 made listening 
> more comfortable.  However, the KX3’s receiver did not seem to have 
> any problems prior to me reducing the RX gain.  The PX3 was certainly 
> nice to be able to “see” the band.  Unfortunately, being QRP I wasn’t 
> able to make nearly the Q’s that I did last year due to some stations 
> just not being able to pull me out (many were saying they had high 
> noise or QRM).   I’m sure CW and/or the digital modes would’ve been a 
> bit more effective with this setup.  It seemed having the stereo 
> effect enabled on the KX3 resulted in a lot less ear fatigue using 
> earbuds.  I was able to make many contacts for the limited time (4 
> hrs.) that I was operating.
>
> Since I don’t recall seeing much discussion using the KX3 on 160m with 
> an efficient antenna I thought I’d share my experience.  So, for those 
> that might be into the broadcast engineering circles and have access 
> to an AM tower (or other type of efficient 160m antenna) I’d certainly 
> recommend using a KX3 with such an antenna.
>
> 73,
>
> Richard
>
> KQ4KX
>
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