[Elecraft] SSB Filter Bandwidth

[Don Wilhelm]

Bill and all,

I also have installed the 2.5 kHz mod on one of my client's K2 SSB board
with great results, and have just recently installed new crystals and the
2.2 kHz capacitors in my own K2.  I am also very pleased with the resulting
filter.  It makes a big difference in tuning SSB signals.  John's
modification of the 2nd Xtal Filter mod helps to make the response much
flatter as well.

73,
Don W3FPR

----- Original Message ----- 
|
| I have implemented John's 2.5 KHz bandwidth OP1 filter, and I must say it
is
| a VAST improvement over what I had when I first built my SSB option board.
| The filter is virtually without ripple, and the bandwidth is exactly as
| advertised, all as measured with Spectrogram.  I would recommend
downloading
| John's note and replacing capacitors as appropriate.
|
| Nice job, John!
|