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ZL3AI > APRDIG 12.10.03 01:42l 252 Lines 9288 Bytes #999 (0) @ WW
BID : 2136-ZL3AI
Read: GUEST
Subj: TAPR Digest, Oct 09, 4/6
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0BEL<IR0NET<VK3TE<ZL2BAU<ZL2BAU<ZL3VML
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: DigiTraveler to PalmIIIxe
From: "Mike Yetsko" <myetsko@insydesw.com>
Date: Thu, 9 Oct 2003 13:39:57 -0400
X-Message-Number: 27
>I loaded Always on. will try it later. Any body know if there is a way
>to feed 3 volts up one of the wires in the cable. I made a 3 volt
>adaptor for my Etrex.
One individual pointed out that the RxDat line to the GPS isn't used on
the DigiTraveler, except to 'turn on' the unit when the serial port is
active. Since 12v is a valid RS-232 signal level, he just fed 12v up
that line, and put a 7805 inside his DigiTraveler to power it from that.
I run 4-conduction cord to my DigiTraveler, since I had to make my
own cable, so that's a decent solution for me. Especially if I fabricate
my own 'cradle' for in the car and send 5V to the Palm in the cradle.
Originally I used 6-conductor wire, since it was a 6-conductor jack
on the GPS, but pins 1 and 6 aren't used, so it doesn't matter.
HOWEVER, in the DigiTraveler, it appears that pin 1 originally was
configured to be a power feed. There's a spot for a fuse on the
PCB, so you could easily build in a 78L05...
Mike
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Subject: PCsat NODIGI
From: Bob Bruninga <bruninga@usna.edu>
Date: Thu, 9 Oct 2003 13:48:50 -0400 (EDT)
X-Message-Number: 28
at 1745z we commanded PCsat into NODIGI mode.
THis is because the XMITTER-ISOLATE relay has not pulled in. SO we need
to send a sequence of commands to fix that. Until we do, we had to turn
off users, because each transmission is now driving both transmitters and
causing us to consume twice our normal power.
Hopefully this will be fixed in the next 24 hours.
de WB4APR@amsat.org, Bob
US Naval Academy Satellite Ground station.
PCsat WEB page http://www.ew.usna.edu/~bruninga/pcsat.html
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Subject: Re: DigiTraveler to PalmIIIxe
From: "Scott Miller" <scott@opentrac.org>
Date: Thu, 9 Oct 2003 11:07:08 -0700
X-Message-Number: 29
This simple device can be used to periodically trigger a button or touch
panel to avoid timing out your PDA...
http://hackensackhigh.org/~rkc/bird.html
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Subject: drsi anyone?
From: Wes Johnston <wes@johnston.net>
Date: Thu, 09 Oct 2003 14:26:08 -0400
X-Message-Number: 30
Has anyone ever set up digi=ned with a DRSI card?
Wes
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Subject: Re: Open-Source TNC anyone?
From: "Gregg G. Wonderly" <gregg@skymaster.cytetech.com>
Date: Thu, 09 Oct 2003 13:33:28 -0500
X-Message-Number: 31
>but I'd
>hate to wear a hole in the flash beacuse I overlooked a log or a semaphore
>file. Even with a purpose-built flash filesystem it'd be best to minimize
>write activity.
Mount the filesystems that are on the flash as readonly, and then you'll
know if there is anything left writing to them unintentionally...
-----
gregg@cytetech.com (Cyte Technologies Inc)
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Subject: Re: DigiTraveler to PalmIIIxe
From: Dale Blanchard <wa7ixk@arrl.net>
Date: Thu, 09 Oct 2003 11:34:23 -0700
X-Message-Number: 32
The always on keeps the Palm on, but the gps still times out.
I could not find the place on the gps where the fuse was supposed to go. I
lifted the positive pin on the diode bridge ans soldered in a 100ma 5 volt
reg. Now I can run it on 12 volts. I will put ajumper in when I find where
to put it. My D-7-a turns it on ok. As the Palm talks both ways to the
computer, it looks like should turn it on and keep it on.
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Subject: Re: Linux-based packet appliance survey
From: "Spider" <spider@rivcom.net>
Date: Thu, 9 Oct 2003 12:01:40 -0700
X-Message-Number: 33
----- Original Message -----
From: "Scott Miller" <scott@3xf.com>
To: "'Spider'" <spider@rivcom.net>
Cc: "'TAPR APRS Special Interest Group'" <aprssig@lists.tapr.org>
Sent: Thursday, October 09, 2003 8:46 AM
Subject: RE: [aprssig] Linux-based packet appliance survey
>The only operating system I've loaded on the unit so far is Debian Linux.
>If I wind up using it for a firewall, it'll probably get OpenBSD. But Linux
>is, to my knowledge, the only operating system with native AX.25 support.
>
>If the question is 'Why not DOS?', it's because Linux is a real multi-user,
>multitasking operating system. A single box could run a couple of packet
>modems, an 802.11b link, a packet BBS, a webserver, firewall, and mail
>server all at the same time. And it's fully controllable remotely.
I thought we were talking about running Digi-Ned. Excuse please!
Jim
WA6OFT
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Subject: Re: Dwait Hacks kill APRS
From: Henk de Groot <henk.de.groot@hetnet.nl>
Date: Thu, 09 Oct 2003 20:32:23 +0200
X-Message-Number: 34
Hello All,
At 13:31 8-10-03 -0400, Bob Bruninga wrote:
>Kantronics. But if you run any other FIRMWARE or ROM or software that
>does not TRANSMIT IMMEDIATELY on a clear channel, then TURN THOSE OFF TOO.
NO! Like I tried to explain a few times already YOU CAN CONFIGURE THIS! For
everybody who wants to setup his digi to TRANSMIT IMMEDIATELY and doesn't
want to (or cannot!) use DWAIT for this, here is how:
1) set PERSIST to 255 - this kills random backoff
2) set SLOTTIME to 0 - this means ZERO wait time after the channel is cleared
For users of the DOS version of DIGI_NED:
-----------------------------------------------------------------------------
Edit the file ax25_mac.ini. Change the:
P 1:64
to:
P 1:255
Repeat for all ports you have (e.g. P 2:64 becomes P 2:255). Now you killed
the random backoff mechanism.
Change the:
W 1:10
to:
W 1:0
Repeat for all ports you have (e.g. W 2:10 becomes W 2:0). Now you killed
any waittime after the channel becomes clear.
Your station runs now without any collision avoidance mechanism, don't use
on shared channels with non-APRS traffic.
-----------------------------------------------------------------------------
For users of DIGI_NED on Linux:
-----------------------------------------------------------------------------
Configure the PERSIST and SLOTTIME values of the AX25 kernel, for example
for interface bcf0:
/usr/sbin/sethdlc -i bcf0 slot 0 ppersist 255
You need to do this before you bring the interface up. WARNING: Your
station runs now without any collision avoidance mechanism, don't use on
shared channels with non-APRS traffic. The setting is global for all
applications using this interface, if you run a client on the same
interface then run with normal collision avoidance settings.
-----------------------------------------------------------------------------
For users of the UIdigi TNC-2 replacement EPROM:
-----------------------------------------------------------------------------
If you use UIdigi then program PERSIST to 255 and SLOTTIME to 0. I don't
have experience with UIdigi so I can't give any detailed instructions how
to do it.
-----------------------------------------------------------------------------
You will notice that the digi has become very agressive now, taking the
first opportunity to transmit without delay. I checked the behavoir of
DIGI_NED with these settings in both DOS and Linux, it now behaves like Bob
discribed it should. I will change the default files for DIGI_NED using
these values so future releases will have this behaviour by default.
Kind regards,
Henk.
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Subject: Re: Linux-based packet appliance survey
From: <BobDonnell@arkalmus.com>
Date: Thu, 9 Oct 2003 12:31:01 -0700
X-Message-Number: 35
>I thought we were talking about running Digi-Ned. Excuse please!
>
>Jim
>WA6OFT
The big advantage for remotely located digipeater sites is that by tying
in amateur TCP/IP support, you gain the ability to remotely administer
the system - even in the rare circumstance that Digi_ned itself crashes.
It's possible to edit files right on the system, and restart processes,
if necessary, all without a site visit. That's not an option you get
with a single-task OS, such as MS-Dos.
Bob, KD7NM
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Subject: Re: Linux-based packet appliance survey
From: "Scott Miller" <scott@opentrac.org>
Date: Thu, 9 Oct 2003 12:49:56 -0700
X-Message-Number: 36
>The big advantage for remotely located digipeater sites is that by tying in
amateur TCP/IP support, you gain the ability to remotely administer the
>system - even in the rare circumstance that Digi_ned itself crashes. It's
possible to edit files right on the system, and restart processes, if
>necessary, all without a site visit. That's not an option you get with a
single-task OS, such as MS-Dos.
Exactly. And you can upload entirely new files, as well. And you can very
easily hook up a WiFi card. In fact, I think I'm gonig to start looking for
a digi site where I can get an 802.11b connection to my house for
experimentation purposes.
Scott
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