[Elecraft] OP1 and CW filter gain difference?

[Vic Rosenthal]

Marteinn Sverrisson wrote:

> I was measuring the gain difference of the OP1 x-tal filter and the
> CW filter on my K2.
> 
> It seems that the OP1 filter has +10dB more gain than the CW filter
> I have the 2.5kHz OP1 filter mod and the stock CW filter on 2.4kHz.
> Measurements are done on 7 MHz band on LSB.

The CW filter has a large amount of ripple when it is adjusted to more than 
about 1.5 KHz bandwidth, although the gain should be more or less the same.  How 
does your CW filter work at narrower bandwidths, for example 1 KHz, 800 Hz, 400 
Hz and 200 Hz?

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