[Elecraft] Connecting Preamp

[telegrapher at q.com]

I noticed that after i connected the preamp into the back of my K3 that it works fine and things i couldn't hear before now come up out of the noise.  It also is an ARR unit.  But if i turn on the 2nd RX then i get a very loud frying noise.  I have to trun off the external preamp in order to hear anything..  If i run just the internal preamp i don't have that problem.  What this does to me is that i can't listen to one receiver in the CW portion of the band and the other receiver in the phone band with the external Preamp at the same time.  Not that i do it a lot but times are that it is convenient.  What i've been doing as a workaround is just set on rx in the SSB portion and one in the CW portion and swap back and forth with the A/B key.  Does anyone else have this problem?  Maybe there is something wrong internally in the radio or is this normal?

Larry
W0OGH