Yea, I was on 40m also. So there's a second data point.
Did not notice it before - but having watched it pretty consistently
tonight, I will know what to look for on other bands. Tonight was the
first night I had the chance to run it on RTTY and want to be sure the
thing is ready for prime time given the CQ RTTY DX is coming up end of Sept.
The good news is that the amp seemed to level off at 73C (or 63C?) and
that means fan 2 was able to keep things under control. SWR is nearly
1:1 on that band and I don't know what it does on other bands but it was
REALLY GREAT that fan speed 3+ was not needed. 1&2 are in a completely
different sound category compared to the 3+ which sound like my
company's computer server room. ha ha.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 18-Aug-18 12:11 AM, Bill Stravinsky via Elecraft wrote:
I noticed this problem shortly after getting my 1500 back in May. I only see
this problem on 40 mtrs for some reason. I've never seen a 10 degree
fluctuation but itis regularly 6 degrees and has approached 8 degrees. I only
work cw for the most part. I see it all the time when the duty cycle goes up
like when contesting and thatis when I start looking at the temp more often so
that's how I noticed it to begin with..
I've learned to live with it, at least for the time being, for the following
reason.
I contacted Elecraft and talked with one of the engineers. Apparently this
problem was addressed during early engineering but leave it to me to be the
first one toexperience this. He explained that there might be a possible fix
for it that would require installing a cap, most likely an SMD type. I would
be more comfy with a discretecomponent, hi. But the jist of the conversation
was that its just a touchy temp sending device. I downloaded some file from
the utility program and I don't think thetrouble was exposed in the file for
some reason after I sent it to them.
Film at eleven.
BillK3WJV.
On Saturday, August 18, 2018, 12:49:55 AM EDT, Jeff Blaine
<keepwalking...@ac0c.com> wrote:
While running the KPA1500 in the SARTG tonight, I noticed that the temp
reading drops about 10C when transmitting. min fan speed 1.
Seems to be related to power - at 1500W it's pretty close to 10C. At
lower powers, it's less of a difference. I don't recall seeing that
before.
Normal?
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
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