[Elecraft] The audio filter

[Bill Coleman]

On Feb 26, 2005, at 10:55 PM, WA2JJH at aol.com wrote:
> It might be impossible to do even if I mod it. I simply want to  lower 
> the
> noise floor.
> The noise floor is low. However I wanted to try to get it to sound 
> like a
> TR-7's noise floor.

Looking at the reviews in QST - the noise floor on the TR-7 was 
measured at -133 dBm on both 80m and 20m.

The noise floor on the K2 was measured at -137 dBm on 80m, and -138 dBm 
on 20m.

So, you're saying you want to WORSEN the noise floor by 4-5 dB?

The noise floor is low enough on either rig that atmospheric noise 
should dominate the receiver, at least 20m and below.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901