K4D in operation at the Mike & Key GOTA station
https://photos.app.goo.gl/q9T96tUYEwVQhtaq9
https://photos.app.goo.gl/KV3ChVQ7JJSa8vsf9
https://photos.app.goo.gl/wJrLrryYkPrh7t1C8
On 6/30/2023 12:40 PM, Dave New, N8SBE wrote:
Eric,
I promised Margaret some 'in action' K4D Field Day pictures. I
haven't forgotten, just been very busy in the aftermath of our 4A
Field Day effort this year so far.
We've tried running 'cheap' GOTA stations over the previous few years,
and except for a Kenwood TS-590S, everything else we've tried in the
$1K-2K price category (or below) suffered badly from the other
stations we were running at our FD site. An ICOM IC-7300 last year
and an IC-7610 (surprisingly) this year both suffered from frontend
overload.
Considering the typical experience level of GOTA operators, trying to
copy SSB when is it being interrupted continuously by the nearby CW
station is very frustrating, and certainly not the kind of experience
we'd like to give our GOTA station visitors.
This year, after trying the IC-7610, we pulled it and subbed in my
K3s/P3 that I had been holding in reserve in case my K4D didn't hold
up. I'm happy to report my K4D ran with flying colors as our
multi-band CW station (80M at night, 20M-10M during the day).
We also ran two other K3/P3 stations (with upgraded LOs, etc), one on
40M CW, and the other on 40M SSB, and the last station ran multi-band
SSB and FT8 digital and was a Yaesu FTdx101d (superhet architecture
with 'vctune' frontend). I did notice a slight increase in my noise
floor on my K4D when the Yaesu was running FT8 on the same band, but
it really didn't effect our operation. Considering that 20M CW was on
about 14.030 and FT8 on 14.074, we were relatively close to each
other, but operated peacefully with out interference.
My experience with K3's running 2.8 kHz or narrower roofing filters,
we could get within 10-20 kHz of another station before we noticed any
interference, and that was mainly due to the Tx IMD of the other
stations. The K4D, without K4HD roof filters, seemed to tolerate
getting within about 20 kHz before noticeable interference. Ditto for
the Yaesu with it's roofing filter and 'vctune' technology.
We topped 2000 contacts this year, with the CW stations making the
majority of the contacts. We have some very good CW operators in the
club, and they are 'QSO machines' on the Elecraft radios.
73,
-- Dave, N8SBE
On 2023-06-26 10:59, Wayne Burdick wrote:
Thanks for your comments, Eric.
Note that the K4 shares the same pedigree, and weighs only 2 pounds
more, for the same reasons.
73,
Wayne
N6KR
2A SCV
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