[Elecraft] K2 AGC pumping when I/O is polled

[Vic K2VCO]

Gregg W6IZT wrote:

> I am planning to use my K2 in CQWW with N1MM logger. When the radio is
> polled by N1MM the radio behaves as if the RF gain was decreased. With no
> antenna connected when the K2 is polled the S meter indicates an S6. I have
> confirmed this effect when using DXBase as well, but since DXB does not poll
> it is hardly noticeable..

Very weird.  I use N1MM (and have used a number of other programs that 
poll the K2) and noticed no effect at all on received signals.  I do 
know that sometimes you can hear digital noise from the RS232 interface 
with the antenna disconnected, but this is usually masked by band noise. 
  Check the routing of the ribbon cable from the control board to the 
KPA100 or KIO2.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco