[Elecraft] Settings for CW filter 400hz

[KD7YZ Bob]

On Wednesday Smith used a Straight-Key to send:
-------------Original Comment-------
> If anyone is using a very narrow filter for JT9 please tell us how it works
> for you in that mode. I think more than a few of us are exploring this new
> mode Joe has brought out.

I used it on about 15 contacts yesterday, 20m .. What I "saw" on the
readings were every Report which was generated was >= +30 .

What I "heard" was that all the adjacent QRM crud was non-existent. In
fact, using "Shift" I could eliminate one of you guys 20hz away in a
legitimate QSO and still decode and get the +30 reports.

So I posited a question to the academics which revolved about the notion
I had that "If" the sig-rep is really +30, here, in the mind of the
JT9-Genie inside my Win7 machine, then that should mean that I could
also hear down to the typical level of -25 and decode.

So, my non-Professor of Radio Astronomy brain decided that a guy running
5 watts from France, who was getting +30 from me, should be able to reduce
power 20 db, and I should be able to decode him .. well, or her, but I
dunno any French Amateur Radio girls ennaweh, so "guys" stands.

However. it's a real Juggle for me, the Newbie-K3 driver, to try and
balance all the 4 to 6 setting possibilities and wind up with a visible
trace.

I won't believe this is actually making weaker signals possible until I
have somebody systematically reduce the output power on his end of the
planet while i write down the sig-reps.

'Doubting Thomas' you say?  Ey-yup, true.


-- 
Best regards,
Bob  KD7YZ    Win7-64bit + K3

BTW
I wish they wouldn't make the List-Emails auto-reply to original person
only .. seems a lot of useful info in the answers will never get to the
general populace. I only caught the reply-to address at the last second
B4 Sending .. way too much trouble to re-address these.