[Elecraft] RTTY Mode Filter Settings for PSK31

[Julian (G4ILO)]

David,

Perhaps I'm missing something, but I think you're going about this the 
wrong way. I've never felt that the Digipan style of operating anywhere in 
the filter passband is a good idea, because even without unwanted AGC 
action from other signals, you'll be getting unwanted attenuation on all 
those signals that are somewhere down the sloping part of the passband. I 
don't think it helps your transmit signal much either if the audio tone is 
on the sides of the passband.

What I do is to use just one narrow filter and tune the K2 to bring the 
wanted signal to its center. I have the KIO2 installed in my K2 and I use 
MixW, which lets you send CAT commands in a macro, so all it takes is to 
click on the signal in the waterfall, then click one macro button to shift 
the VFO and center the signal. The same approach can be used in CW mode to 
instantly spot on a CW signal. I don't use other programs, so I don't know 
which others support CAT control and macros.

73,
--
Julian, G4ILO. (RSGB, ARRL, G-QRP, K2 #392)
G4ILO's Shack: http://www.qsl.net/g4ilo

"DAVID POWELL" <dwpowell68@msn.com> wrote:

I am experimenting with filter settings in the RTTY/Data Mode (r bar) for 
use 
with PSK 31.

My objective is to prevent a strong signal at one end of the waterfall 
display 
from activating the receiver AGC to the extent that I can't copy a weak 
signal 
at the other end of the waterfall.