Hi Rick/Dave,
When the copy gets tough I use a 350hz (-6db) ICOM
FL-232 filter in my ICOM-706mkII for copying Olivia
16tones/500hz. The filter skirts are not sharp so it
works ok.
I used that setup to copy Juergen DL8LE and Massimo
IZ0GKZ recently on those EU/NA tests on 160m.
Of course :-) I had some help from linux software (Fldigi)
and linux OS (Kubuntu 6.06).
73,
Irvine N5UNB
kv9u wrote:
Hi Dave,
Yes, the narrower filters will help a great deal. .........
If I could only have one additional filter than the stock SSB filter, I
would go for the 500 Hz filter since it is very useful for CW use as
well as narrow to medium digital modes. I have a 270 Hz crystal filter
in my Kenwood TS-440SAT that I find rather narrow although some might
prefer that for CW.....
If you go narrower than 500 Hz, you can not use a number of digital
modes that are around or slightly under 500 Hz, but may not fit well
into at 250 Hz bandpass....
73,
Rick, KV9U
Dave wrote:
> Has anyone tried using either a 250 Hz or 500 Hz filter for PSK31
> reception? .................
> Dave
> KB3MOW
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