[Elecraft] Some K2 observations and questions

[Paul Del Negro]

Just finished building and aligning sn 05834.  Have a couple of questions:
1 - Preamp...I wonder if anyone else has noticed a very noisy K2 
preamp...with no antenna or just dummy load connected, when I turn on 
the preamp there is a marked increase in noise output.. Is this normal 
or do I have a problem?

2 - I aligned the filters with spectrogram....is there any way of 
getting the bfo set so that the received signal is the same pitch on all 
4 filters? and, does the pitch change when switching filters affect the 
transmit frequency?

Thanks for any input
Paul
N2PD