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PA2AGA > HDDIG 20.02.00 03:27l 257 Lines 7931 Bytes #-9574 (0) @ EU
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Subject: HamDigitalDigest 2000/49A
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Ham-Digital Digest Fri, 18 Feb 2000 Volume 2000 : Issue 49
Today's Topics:
Alcatel ATR 9227 ??
Anything better than X1J4?
a TNC made with PIC's??? (2 msgs)
NEW HARDWARE FOR DIGITAL MODES!
Swap
Voda-Phone, was Re: What is a good TNC?
What is a good TNC? (18 msgs)
Send Replies or notes for publication to: <Ham-Digital@UCSD.Edu>
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Loop-Detect: Ham-Digital:2000/49
----------------------------------------------------------------------
Date: Fri, 18 Feb 2000 06:20:45 +0100
From: F5JTZ - Patrice <f5jtz@club-internet.fr>
Subject: Alcatel ATR 9227 ??
73 de patrice.
Suis à la recherche de toutes infos pour remettre en service
Alcatel ATR 9227....soft et hard pour phonie et packet....
merci / patrice f5jtz.
>.
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Date: Thu, 17 Feb 2000 11:45:00 -0800
From: Rob Dover <rdover@bclc.stamp.out.spam.com>
Subject: Anything better than X1J4?
Does anyone know if there is a better TNC based node package that Thenet
X1J4? We are having problems with X1J4 locking up.
Must be TNC based.
Thanks 73 -Rob-
rdover'at'bclc.com
ve7eje@ve7rxd.#scbc.bc.can.noam
>.
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Date: Thu, 17 Feb 2000 18:45:16 GMT
From: nomail@rob.knoware.nl (Rob Janssen)
Subject: a TNC made with PIC's???
Laura Halliday <va3ldh@sympatico.ca> wrote:
>My initial inclination was something quick and dirty for 1200 baud
>PACSATs. Then the largest frame I need to handle is 256 bytes, and
>if I stick to UI frames (i.e. digipeating and downloads only), I only
>need to process one frame at a time. You have to start somewhere... :-)
Yes, but I think it is useless in that application, because to handle the
pacsat protocols you need a computer that has to have reasonable power
(e.g. you probably can't get it to work on a Z-80 CP/M system), and such a
computer can do the required work all by itself.
A PIC driven TNC would be more interesting for small standalone systems,
e.g. remote control & telemetry, APRS, etc.
Rob
--
+----------------------------------+--------------------------------------+
| Rob Janssen pe1chl@amsat.org | WWW: http://www.knoware.nl/users/rob |
| AMPRnet: rob@pe1chl.ampr.org | AX.25 BBS: PE1CHL@PI8WNO.#UTR.NLD.EU |
+----------------------------------+--------------------------------------+
>.
------------------------------
Date: Thu, 17 Feb 2000 13:30:21 GMT
From: Laura Halliday <va3ldh@sympatico.ca>
Subject: a TNC made with PIC's???
Rob Janssen wrote:
> Instead of inventing yet another incompatible extension, you can use one of
> the many existing "KISS plus checksum" implementations, and send a wrong
> checksum at the end of the packet. The host will then discard it. At
> least when it understands the particular KISS extension.
There has been talk of a KISS "discard frame" escape in some circles.
Since I use Linux on my home systems I have the source and can extend
it if I need to. There is nothing sacred about KISS, and other ways
exist to solve the problem (e.g. 6PACK).
> However, that will not save you from having a buffer, because:
> (snip...)
My initial inclination was something quick and dirty for 1200 baud
PACSATs. Then the largest frame I need to handle is 256 bytes, and
if I stick to UI frames (i.e. digipeating and downloads only), I only
need to process one frame at a time. You have to start somewhere... :-)
The 16F8xx PICs are attactive as well for their hardware UARTs. I
ordered
a 16F877 yesterday to see what I can do with it.
--
Laura Halliday VA3LDH "Laisse le vent tout emporter..."
Grid: FN03gs - Foly/Viennet
>.
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Date: Thu, 17 Feb 2000 07:33:05 -0500
From: "Bob Lewis" <aa4pb@erols.com>
Subject: NEW HARDWARE FOR DIGITAL MODES!
> Anyone got a URL on the {correct} way to do
this? Don't
> forget the drivers and related software to pull
it off.
>
http://www.qsl.net/wm2u/psk31.html
>.
------------------------------
Date: Thu, 17 Feb 2000 09:15:38 -0500
From: "Mark Erbaugh" <mark@nospam.microenh.com>
Subject: Swap
Dennis Edey <vk4sx@dingoblue.net.au> wrote in message
news:88fhdk$b80$1@news1.mpx.com.au...
> Swap or trade HAL P38 DSP Clover/pactor/amtor/rtty modem.new 2 hrs
use,used
> for firmware testing with HAL.
> rgds dennis VK4SX.
>
What are you looking for in trade?
>.
------------------------------
Date: Fri, 18 Feb 2000 03:55:21 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: Voda-Phone, was Re: What is a good TNC?
"Rob Janssen" <nomail@rob.knoware.nl> wrote in message
news:slrn8anf93.63v.nomail@linux.pe1chl.ampr.org...
> Steve Sampson <ssampson@usa-site.net> wrote:
> >APRS is pure 1200 baud, *never* will be greater speed.
>
> Is that true in the USA? Over here it certainly isn't...
As usual, Steve does not know what he is talking about.
Perhaps someday he will put some radios on air and see what
is actually happening with ham radio. Of course APRS is run
at higher speeds than 1200, where there exists such network.
We had a lot of fun running it across our 9600 network for
awhile, until everyone became bored with it.
> >TAPR sells (haven't checked lately) the best 9600 repeater TNC there is,
and
>
> That must be a German design then... or maybe you have overlooked those?
--
... Hank
http://horedson.home.att.net
>.
------------------------------
Date: Thu, 17 Feb 2000 09:16:13 -0600
From: W6RCecilA <Cecil.A.Moore@IEEE.org>
Subject: What is a good TNC?
Rob Janssen wrote:
> Yes, but we have heard this story for over 10 years, and the first cheap
> and widely available (and used) DSP modem for amateur packet radio still
> has to appear. I can remember (name of person deleted) holding up a first
> prototype of the DSP-2232 at an AMSAT-UK colloquium and giving lectures
> about how powerful this thing is and how nice and efficient the modems to
> be written for it would be. But as we all have seen, this didn't
> materialize and the product is sort of withdrawn from the market, after
> many many years.
It's not cheap, but the SCS PTC2e pretty much does everything on HF.
--
73, Cecil, W6RCA http://www.mindspring.com/~w6rca
>.
------------------------------
Date: Thu, 17 Feb 2000 07:27:53 -0600
From: "Charles Brabham" <n5pvl@texoma.net>
Subject: What is a good TNC?
Mike Blankenship <mikeb@rectec.net> wrote in message
news:38AB8A4A.B713146A@rectec.net...
> I believe the original question still remains un-clearly answered and I
> also happen to be interested in the outcome.
>
> Try it this way: using current, widely available technology, what would
> be a good choice to start out with packet.
Just about any of the available equipment will work... I'd stay away from
the Kantronics stuff though.
>
> Then let's talk more about high speed access....
What about it?
--
73 DE Charles Brabham, N5PVL
N5PVL @ N5PVL.#NTX.TX.USA.NOAM
http://www.texoma.net/~n5pvl
>.
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