Message-ID: <001701c09187$ca8fad40$9d79f5cd@wd4kpd>
From: "David Michael Gaytko" <cn2859@coastalnet.com>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Re: CW-Keying via Soundcard or PC speaker
Date: Thu, 8 Feb 2001 04:29:55 -0000
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ok i get what you are saying....as i am in the US, i was interested in qrss
and the other programs for use on 80m and 160m for lowpower ops and dx. so
my setup would only be on ssb with low power, and i think that with
vfsk/dfcw using one second or less characters would give no problem.

david


-----Original Message-----
From: WarmSpgs@aol.com <WarmSpgs@aol.com>
To: rsgb_lf_group@blacksheep.org <rsgb_lf_group@blacksheep.org>
Date: Thursday, February 08, 2001 04:21 GMT
Subject: Re: LF: Re: CW-Keying via Soundcard or PC speaker


>The problem with using a soundcard output to a mic input is not in the
>programming aspect, but is a question of efficiency and possibly power
>dissipation.  Guys who key Class C, D, and E amplifiers have enough trouble
>with the duty cycle of QRSS sometimes.  Imagine what a linear amp for SSB
>might do at full carrier continuously for a minute.  It's really, really
much
>easier to optoisolate an I/O port and use old fashioned on-off keying in
most
>cases.
>
>73,
>John
>
>