FWIW, the drift is proportional to frequency, so you should be seeing < 3 Hz on
20 meters.
It’s < 2 Hz on my lab test unit on 20.
Wayne
N6KR
http://www.elecraft.com
> On Nov 24, 2017, at 4:23 PM, Edward R Cole wrote:
>
> I ran intensive frequency stability tests on my KX3 in 2014 afte
I ran intensive frequency stability tests on my KX3 in 2014 after
getting it. Adding a VE3FMN heat sink and running the
temp-compensation procedure maximum drift running JT65 on 6m showed
+13-Hz drift in the first minute; no more than 10-Hz afterward. That
is good enough for JT65 (but not sur
I wonder how stable is the KX2 in digital modes?
My KX3 with the temperature compensation carried out was inadequate when
running wspr at 5 watts output.
However, this was before Elecraft introduced the improved heat sink.
Rob G3RCE
On Nov 24, 2017 13:23, "Howard Hoyt" wrote:
> Hi Barry,
>
> Whi
Hi Barry,
While using the KX2 in just about any digital mode above 5 W or so, we
found the PA temp will reach thermal limit fairly quickly, which is why
Elecraft rates the KX2 at 5 W in digital modes, and why we came up with
an improved cooling solution. (commercial content) Many owners who w
I think the problem only shows up if you're consistently transmitting
(i.e., 12 sec every 30 sec). My use case is doing a SOTA activation in FT8
mode and having several callers waiting to work me so I could make 5 - 10
qso's in a row without gaps. That's when the KX2 seems to really heat up.
It m
Barry,
I run 10w through my KX2 with the back leg down to allow for
airflow and don't find heat to be an issue. I'm not TXing all that much,
I'm a hunt & pounce type with occasional CQing. In the summer I ran a
small fan over it to help a bit. No issues for me. I normally see it get
to t
I'd appreciate hearing from others who are using their KX2 in FT8 mode in
terms of your experience with power output and acceptable PA heat level.
The reason I ask is that I'm running 5W on 40M with the rear foot down (rig
tilted up) and I'm seeing the PA temp reach 60deg C in ordinary qso'ing
(i.e
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