The 400 Hz filter is marginally better for RTTY and no worse
for CW if there are strong signals close enough that a narrow
filter is needed to prevent "window overload" or AGC pumping.
73,
... Joe, W4TV
On 2015-03-07 12:52 PM, Ross Primrose wrote:
Or, get the 500Hz 8-pole from Inrad...
73, Ross N4RP
On 3/7/2015 12:29 PM, Joe Subich, W4TV wrote:
If you operate any CW or RTTY you will want the 400 Hz filter. IMO,
that's the best all around filter - particularly if you have any idea
of adding the KRX3 in the future since you will not need to try to
match five-pole filter center frequencies after the fact.
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