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' [email protected] [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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