[Lowfer] Filters recommendations: IC-R75A

[lowfer@mailman.qth.net]

Dont you find that weak, noisy CW makes a better copy at relative slow
speeds
I am not a CW op but can do it. When things get noisy it sure makes
better for me
at under 10 Wpm. Perhaps M brain is too use to QRSS    HAR

Or its M ears

HUH  ?

Bob K3DJC



On Tue, 4 Mar 2003 14:47:18 -0500 "John Andrews" <w1tag@charter.net>
writes:
> Denis,
> 
> I initially got the 9 MHz, 500 Hz filter. Along the way, Santa 
> produced the
> 455 kHz, 250 Hz filter. I use them together for all of my slow-speed 
> work.
> For aural CW, I prefer the 500 Hz filter alone unless cndx are bad, 
> but
> that's a personal thing.
> 
> But I'm not at all convinced that I'm accomplishing a lot with the 
> second IF
> filter, given that the detection BW is a few Hz wide, and done in 
> DSP. On
> occasion, I have been able to keep the AGC from ramping up on a 
> nearby
> signal, or been able to run the RF gain higher with the AGC off. But 
> in
> reality, Argo (or whatever) probably doesn't care.
> 
> I think the 9 MHz, 500 Hz filter would be fine unless you spend time 
> copying
> weak aural CW signals by ear. Given that we may be doing a lot more 
> of that
> if 136 kHz becomes available, the narrow 2nd IF filter may be more 
> useful
> later on.
> 
> John A.
> 
> 
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