I don't agree - with CW you tune by ear, for PSK31 / RTTY you need a visual
indication. You're also assuming that the other stations are using PSK31
(not PSK63) or RTTY with 45.45 / 170Hz. Also it's common to decode digital
signals which are not visible on a waterfall.
Myself I'm planning on a decent 12" laptop for portable ops with my IC-703,
many now offer up to 4 hours on a standard battery.
If you can get a K3 out portable with the required power supplies and
associated gubbins then adding laptop is a doddle.
Simon Brown, HB9DRV
----- Original Message -----
From: <[EMAIL PROTECTED]>
Exactly the case. With the built-in decoder you can take the K3 someplace
portable
without a computer and still send and receive PSK31/RTTY just as easily as
having a
QSO in CW.
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