Ham population stats

From: Geoff Roberts <geoffrob_at_stmarks.pp.catholic.edu.au>
Date: Sun Feb 20 19:09:41 2000

----- Original Message -----
From: Shawn T. Rutledge <rutledge_at_cx47646-a.phnx1.az.home.com>
To: <classiccmp_at_classiccmp.org>
Sent: Thursday, 17 February 2000 9:28
Subject: Re: Ham population stats


> > Stupid question: what comes out of the other side of a ham TNC these
days?
> > It used to be Bell 202 modem tones at 1200 baud HDX, over an FM voice
signal,
> > it *can't* still be that easy though can it? Some place I still have
the
>
> Yeah 1200 baud AFSK hasn't changed but there are many new methods of
> doing more-reliable data transfer on HF and also faster speeds on other
> frequencies.

It would be very cool to be able to use AX.25 Packet from a Vax running VMS.
I have seen native AX.25 support for linux, so I guess it wouldn't be too
hard
to do in VMS. I'd REALLY like to see the support for Baycom modems
that linux has too. (TNC's are grossly overpriced - even now).
Not sure how you'd do it on a DMB32 or similar though, don't know enough
about the hardware or how the o/s talks to it. It's unlikely you could do
the
same thing exactly the same way.
On a pc it uses the serial port handshaking lines (presumably so slower
machines wouldn't miss something whilst the TNC emulation TSR was
busily translating the raw AX.25 - something I suspect is not really
necessary
unless it's a REALLY slow machine (at 1200bps anyway).
I suspect if a Vax can cope with an asyncronous decnet connection _at_ 9600 on
a DMB serial port, AX.25 TNC emulation _at_ 1200 should be no problem....
Hmmmm......

Cheers

Geoff Roberts
Computer Systems Manager
Saint Mark's College
Port Pirie, South Australia.
Email: geoffrob_at_stmarks.pp.catholic.edu.au
           netcafe_at_pirie.mtx.net.au
ICQ #: 1970476
Received on Sun Feb 20 2000 - 19:09:41 GMT

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