[Elecraft] KSB2 Observations and Questions

[Dean Fewkes]

I just built and installed the KSB2 for my KS SN5319. I used the capacitors 
for 2.6 MHZ bandwidth and the transmit audio sounds excellent and full 
bodied as tested on my Mark V. I did notice on the receive audio that there 
is some roll off below 450 HTZ regardless of where the filter/BFO is set. 
The roll off is gradual until it gets to the filter edge so I am not too 
concerned about this for communications purposes, but it does take away from 
the ability to get that full bodied sound on receive that I get on my Mark 
V. I suspect that this roll-off must be in the audio circuit and I wonder if 
anybody else has ideas on this.

The other thing is that the compressor does not seem to work. There is no 
detectable difference between 1:1, 2:1, 3:1 or 4:1 settings. The transmitted 
signal sounds really good otherwise. I am using a standard Yaesu MH-31 
dynamic mic that is known to work good on other radios.

Thanks for your help and ideas!

Dean

KG7MZ