JohnK1JD wrote:
Trusty K2/100 SN#583 has a problem which is the first significant
issue since building the basic K2 in Oct of 1999. The has been mostly
unused (neglected?) since the K3 arrived last November, but decided
to fire it up the other day and discovered that both RX and TX
exhibit a broadband 'hash' sound instead of distinct CW when first
turned on, both on signals received and on its transmitted signal.
This problem lessens as the radio warms up and eventually disappears
completely. I have used it quite a bit this weekend and it's been
fine - until I turn it off for a few hours.
The frequencies for the VCO and BFO seem OK as do the voltages. Cal
PLL was performed and completed without any errors.
Has anyone experienced this intermittent problem before?
Hi John!
I heard you on 20m this morning.
My first thought with any intermittent is always a forgotten or poor
solder joint. It would be interesting if it had just appeared after all
these years.
I would try reseating any socketed IC's. You could selectively cool
components with a freon spray to try to isolate it.
Also it might help to check and see if it happens on all bands/modes or
just specific ones.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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