[Icom] IC-756pro2

[David J. Ring, Jr.]

Rise time adjusts the time the signal rises to maximum and the time it
decays to minimum.  The shorter milisecond (ms) is for crisp code, the
longer ms is for softer code.  Some stations have reported clicks when using
very short rise time.

I can hear the difference by ear (using a different receiver).  But I
haven't measured the rise time - but it sounds accurate based on my years of
experience at measuring this in the past.

73

DR

73

DR
----- Original Message -----
From: <k6se@juno.com>
To: <icom@mailman.qth.net>
Sent: Monday, August 04, 2003 10:45 PM
Subject: [Icom] IC-756pro2


> I asked Icom America the following question:
>
> Page 43 of the instruction manual describes a CW keyer menu item called
> "Rise Time".  The adjustment procedure says, "Rotate the tuning dial to
> select the time which the output power becomes the set transmit power".
>
> Is "Rise Time" the cw waveform rise time or is it a delay to allow time
> for an amplifier's keying relay to close before the 756's RF output
> occurs?
> ==========
> Here's the answer I received:
>
> The instructions you refer to have puzzled me too.  I believe that this
> is a misprint of some sort, because it doesn't make sense.  By turning
> the main tuning dial, you increase or decrease the rise time of your
> signal, so you can make the tone harsh or softer by changing the rise
> time.
> ==========
> As you can see, the answer does not appear to be all that definitive (to
> me, at least).
>
> Has anybody on this reflector looked at the CW waveform on 'scope and
> know the correct answer to my question?
>
> 73, de Earl, K6SE
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