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PA2AGA > HDDIG 22.03.00 15:15l 263 Lines 7508 Bytes #-9539 (0) @ EU
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Subject: HamDigitalDigest 2000/77A
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Ham-Digital Digest Fri, 17 Mar 2000 Volume 2000 : Issue 77
Today's Topics:
$99 Modern TNC (LCD 800x600)
Help a newby, pse! (2 msgs)
May QEX digital voice article
MT63
NOS (and derivatives) don't send FRMRs ? (2 msgs)
Packet on FRS? (5 msgs)
TrueTTY: Handle RTTY and PSK31 via sound card
Which TNC
Send Replies or notes for publication to: <Ham-Digital@UCSD.Edu>
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Archives of past issues of the Ham-Digital Digest are available
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We trust that readers are intelligent enough to realize that all text
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Loop-Detect: Ham-Digital:2000/77
----------------------------------------------------------------------
Date: Thu, 16 Mar 2000 23:22:49 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: $99 Modern TNC (LCD 800x600)
"Steve Sampson" <ssampson@usa-site.net> wrote in message
news:sd0llrsk9n29@corp.supernews.com...
> Blow me. Send me $5 and I'll send you a picture of my butt.
Ya gonna have to make a MUCH better offer bubba!
--
... Hank
http://horedson.home.att.net
>.
------------------------------
Date: Thu, 16 Mar 2000 15:35:33 -0700
From: "Bill Skinner" <bskinner@shipleysystems.com>
Subject: Help a newby, pse!
Hi Folks:
I am considering getting into a"digital mode." I am located in north eastern
New Mexico and am about "a hundred miles from anywhere." I have an Icom 746
and a vertical and a triband beam. I am interested in a unit that will
convert RTTY, AMTOR, CW,etc. I really know nothing, so any help would be
appreciated.
Bill, K5MSW
Logan, NM
>.
------------------------------
Date: Fri, 17 Mar 2000 02:22:41 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: Help a newby, pse!
"W6RCecilA" <Cecil.A.Moore@IEEE.org> wrote in message
news:38D1908D.14006E65@IEEE.org...
> Bill Skinner wrote:
> >
> > Hi Folks:
> > I am considering getting into a"digital mode." I am located in north
eastern
> > New Mexico and am about "a hundred miles from anywhere." I have an Icom
746
> > and a vertical and a triband beam. I am interested in a unit that will
> > convert RTTY, AMTOR, CW,etc. I really know nothing, so any help would be
> > appreciated.
>
> Try this URL for the top-of-the-line in HF modems. I've got a PTC2e and
> it works much better than anything else I've ever had.
>
> http://www.scs-ptc.com/
> --
> 73, Cecil, W6RCA http://www.mindspring.com/~w6rca
Second that. The PTC controllers seem to be the best available
at this time, and there is good software available for them.
--
... Hank
http://horedson.home.att.net
>.
------------------------------
Date: 17 Mar 2000 01:56:05 GMT
From: jeffreyh@Hawaii.Edu (Jeffrey Herman)
Subject: May QEX digital voice article
Brian Mullaney <mullaneb@tecoma.mccc.edu> wrote:
>Brian Kelly <kelly@dvol.com> wrote:
>> Brian 'ole bean I got into ham radio to work dx and later I discovered
>> HF contesting. You don't do those above 30Mhz except for a bit of
>> dxing on 6m. That's the way it was all those years ago and ham radio
>Can't do DX above 30mhz?
By definition, HF's upper bound is 30 MHz, so no, you can't do
HF contesting above 30 MHz.
Jeff KH6O
>.
------------------------------
Date: Thu, 16 Mar 2000 22:34:35 +0100
From: "A&B" <ah@plis.inka.de>
Subject: MT63
Hi, i´m looking for frequencies on the short wave
and vhf - uhf bands for mt63.
73, Alex DH2ID
>.
------------------------------
Date: Thu, 16 Mar 2000 21:38:50 GMT
From: "D. Stussy" <kd6lvw@bde-arc.ampr.org>
Subject: NOS (and derivatives) don't send FRMRs ?
On Thu, 16 Mar 2000, Rob Janssen wrote:
> Dana H. Myers K6JQ <dana@source.net> wrote:
> >I'm still mildly tempted to build a pedantic flavor of AX.25 for giggles,
> >maybe I can save the trouble by looking at ancient tcp-group archives?
>
> Yes... check the archives of about a decade ago, or slightly earlier...
>
> >> (another condition that often would lead to a FRMR in the official
protocol
> >> and will cause no harm when simply ignored: excessive buffering of
packets,
> >> e.g. in a KISS TNC, outside of the control of the AX.25 engine. this can
> >> cause "long delayed packets" that arrive after a corrective action was
> >> already taken)
>
> >The relatively short sequence-number stream is certainly an issue here.
X.25
> >was clearly designed for relatively reliable wired circuits, and certainly
leaves
> >a bit to be desired in the translation to radio circuits, even relatively
good
> >ones. Old news, I know, but I've been recently reminded :-)
>
> Do you know about the "extended sequence" option (modulo-128 numbering)
> that I proposed some years ago? It has been implemented in a number of
> environments, and solves these problems. Because it additionally limits
> the MAXFRAME to half the sequence space, it even allows for buffering
> out-of-sequence frames without ambiguity problems.
>
> It can be found on my website.
.... And for those using Linux's AX.25 extensions, the 128-# is implemented as
an option (normally turned off, but enabled via the /proc pseudofilesystem).
>.
------------------------------
Date: Thu, 16 Mar 2000 15:41:55 -0800
From: "Dana H. Myers K6JQ" <dana@source.net>
Subject: NOS (and derivatives) don't send FRMRs ?
Hank Oredson wrote:
> SNOS does not transmit FRMR, like most (or all) of the NOS variations.
> It did for awhile, but seemed much simpler to do the "obvious" thing for
> each of the error cases ... usually a link reset.
That's where I'm headed myself. Nonetheless, the obvious thing isn't always
all that obvious.
So far, I've only seen one node on the air around here that sends FRMRs,
a Ka-Node.
I'm under the restriction that I'm building a packet server that needs to
support what people bring, so alternative protocols really aren't an
option (though I'm not worried about V1 AX.25).
--
Dana K6JQ DoD #j
Dana@Source.Net
>.
------------------------------
Date: Thu, 16 Mar 2000 07:03:02 -0600
From: "Charles Brabham" <n5pvl@texoma.net>
Subject: Packet on FRS?
<horseshoestew@my-deja.com> wrote in message >
> Bummer... What we COULD do with digital... Damn Qualcomm.
>
You've probably heard me mention a time or two the Amateur Packet Radio
network in Europe being much more advanced and developed than anything in
the US?
Well, the CB operators over there are better off too. They CAN and DO use
digital, and operate a CB BBS network similar to that used by Hams. It's
legal over there.
--
73 DE Charles Brabham, N5PVL
N5PVL @ N5PVL.#NTX.TX.USA.NOAM
http://www.texoma.net/~n5pvl
>.
------------------------------
Date: Thu, 16 Mar 2000 08:59:31 -0800
From: "Sparky" <Sparkey402@hotmail.com>
To be continued in digest: hd_2000_77B
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