Hmmmm ... strange.
Mine isn't at all sensitive and once set, I never really touch it. One
thing ... like most Elecraft rigs, the instantaneous power out of the K3
will adjust on the first couple of dots or dashes [or syllables] to a
new setting. If I change the K3 drive setting, even by one watt, the
KPA500 usually hits 700W on the first dot or dash. After that, it
settles back immediately. The amp is a bit conservatively designed :-),
I've run mine on RTTY at 550W for a whole contest. I think it's just
the internal ALC working.
One thing I would like is instead of the K3 telling me the amp is in
standby or operate, it tells me the power the K3 is going to deliver
when I first tap the key after changing the amp status. The per-band
tune function has not worked for me on very rare occasions. I'm sure
it's pilot error, just don't know what I've done when it happens.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org
On 4/27/2013 7:03 PM, Jim McDonald wrote:
I've only had my KPA500 for a couple of weeks. It seems to have so much
gain that adjusting the K3's power control takes a very fine touch to drive
the amplifier to the desired 500W without overshooting. It's too easy for
me to add 50W of KPA500 output when I really want, say, 10w or 20W, but
maybe I'm being too finicky.
I normally use the per-band tune menu option so it's only a problem when
adjusting the drive, of course.
I'd appreciate having a K3 menu item to adjust the sensitivity of the power
control.
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