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ZL3AI > APRDIG 09.04.03 10:07l 226 Lines 9104 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Apr 06, 1/3
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Sunday, April 06, 2003.
1. New Improved Hi-Speed-Keying Version Of Tone-Key Soundcard Interface Posted
2. Re: Xastir works under Cygwin?
3. Linux aprsdigi-2.4.3 is now available.
4. Dx via VHF
5. D700 in Mazda Tribute/Ford Escape
6. TAPR and APRS at Dayton
7. D700 in Mazda Tribute/Ford Escape -- More
8. Maritime Mobile Weather Stations
9. Re: D700 in Mazda Tribute/Ford Escape -- More
10. Re: TAPR and APRS at Dayton
11. Re: TAPR and APRS at Dayton
12. FW: Maritime Mobile Weather Stations
13. Re: New Improved Hi-Speed-Keying Version Of Tone-Key SoundcardInterface
Posted
14. Re: Maritime Mobile Weather Stations
15. (Precision guided rocks) Updating Ancient weapons
16. Re: New Improved Hi-Speed-Keying Version Of Tone-Key Soundcard...
17. Re: Maritime Mobile Weather Stations
18. Radio SHack/DeLorme GPS Unit on CLEARANCE
19. OT - Seti@home exploit in the wild
20. OT: Motorola T-1021A sig generator
21. Wx message filtering - one more time
22. Re: Wx message filtering - one more time
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Subject: New Improved Hi-Speed-Keying Version Of Tone-Key Soundcard Interface
Posted
From: WA8LMF2@aol.com
Date: Sun, 6 Apr 2003 07:08:03 EDT
X-Message-Number: 1
If you are using the AGW Packet Engine or MixW as a soft TNC for packet or
APRS applications, you may be interested in this new soundcard interface
design.
About two years ago, I posted a write-up about a homebrew tone-keyed
soundcard interface on my website. This design uses a VOX-type audio
detector to eliminate the need for a serial COM port for keying the
transmitter when using sound card modes. I have just posted an all-new
version of this design.
The new version is a result of an effort to use an absolute minimum number of
components, and to improve the performance (sensitivity to sound card audio
and keying speed) This greatly simplified design uses an inexpensive (
approx $ .50 USD) LM158/258/358 series dual op-amp integrated circuit to
replace a lot of discrete parts including the sometimes hard-to-find power
MOSFET used in the original design. The audio sensitivity of the keyer has
been increased -- it will now reliably key the transmitter with less than
100mV of audio from the soundcard output.
This new design also keys and unkeys the transmitter MUCH faster (an
important issue if you are using packet modes generated by the AGW Packet
Engine or MixW software). Using a dual-trace triggered scope, I have
measured the RX-to-TX delay (time between start of tone and PTT relay contact
closure) at about 2 milliseconds. The TX-to-RX delay (time between the end
of the tone and the PTT relay opening) is less than 3.5mS! Clearly an
insignificant addition to packet TXD overhead.
A second version uses the common 6-pin dip-package 4Nxx-series opto-isolators
to replace the relay. The key and unkey times are even faster (less than 2
mS), but you lose the second set of contacts to automatically transfer TX
audio between mic and sound card. This is not an issue if you are
connecting the interface via a radio rear-panel non-mic "data" or "packet"
jack.
Complete details and downloadable schematics (in both GIF and Acrobat PDF
formats) are located on my website at:
http://members.aol.com/wa8lmf/ham
Look for the "UPDATED! Hi-Speed Tone-Keyed Soundcard Interface" link near the
top of the page.
Stephen H. Smith wa8lmf @ aol.com
Home Page: http://wa8lmf.com
Ham Radio/Mobile SSTV page: http://members.aol.com/wa8lmf/ham
APRS Stuff
http://members.aol.com/wa8lmf/aprs
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Subject: Re: Xastir works under Cygwin?
From: "Guy Navarro" <wb5uaa@hotmail.com>
Date: Sun, 06 Apr 2003 07:16:07 -0700
X-Message-Number: 2
On Thu, 3 Apr 2003, Guy Navarro wrote:
>Did I see someone mention they got Xastir to work under Cygwin? Can you
>tell me which Cygwin packages are needed? I downloaded the basic Cygwin
>stuff along with gcc and when I tried to ./configure libax25, it says gcc
>cannot create an executable. How'd you get it to work?
You can't use libax25 on windows. You can however run with serial
KISS-mode TNC's and regular serial-mode TNC's.
Check out http://www.xastir.org and there's a link to the
README.win32 file which says how to install Xastir and the map
libraries.
Subscribe to the xastir mailing list and ask further questions
there. Hope to see you on the map soon with it!
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
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Subject: Linux aprsdigi-2.4.3 is now available.
From: Alan Crosswell <alan@columbia.edu>
Date: Sun, 06 Apr 2003 12:21:16 -0400
X-Message-Number: 3
Announcing N2YGK's Linux aprsdigi-2.4.3. April 5, 2003
Release 2.4.3 of N2YGK's advanced APRS digipeater is now available for
free under the terms of the GNU Public License (GPL) at
ftp://ftp.tapr.org/aprssig/linux/aprsdigi-2.4.3.tgz.
[Find it now at http://www.users.cloud9.net/~alan/ham/aprs/]
This release has the following new features:
- UDP/IP (v4 and v6) unicast and multicast (ASM) support. Useful for
connecting aprsdigi's over the Internet, WLANs, etc.
(Note: this is *not* TCP support as used by APRS-IS, aprsd, etc.)
Both transparent and "3rd party" tunneling are supported.
- Budlist to permit/deny digipeating of traffic for individuals or groups of
AX.25 and IP sources. IP budlists are helpful when using IP multicast!
- Interfaces may be set to transmit- or receive-only.
- Interfaces may be set to disable retransmission of received packets on
the same interface (one-armed routing).
- Unix FIFO supported as an interface type. Mostly useful for debugging.
- Bug fixed that caused aprsdigi to crash upon TRACEn-n callsign insertion
when the digipeater list was full.
As well as these existing features:
- Digipeater callsign substitution (e.g. RELAY replaced w/N0CLU-12).
- WIDE, WIDEn-n, TRACE, and TRACEn-n.
- As many radio interfaces as you can plug into your Linux machine
with flexible gatewaying between them.
- Special handling for Mic-Encoder, Kenwood TH-D7, and TheNet X1J4,
including
SSID-based digipeating.
- Suppression of duplicate and looping packets.
- Works with Linux 2.4 kernel AX.25 network stack. This means any AX.25
interface supported by the kernel will work, not just a TNC2 clone.
Examples include all the BAYCOM interfaces (BAYPAC, PICPAR, PICSER,
etc.),
soundcards, 8530 SCC cards, any serial port KISS TNC, etc.
Aprsdigi is Copyright (c) 1996,1997,1999,2001,2002,2003 Alan Crosswell
n2ygk@weca.org
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Subject: Dx via VHF
From: James Smith <k9apr@tawg.org>
Date: Sun, 06 Apr 2003 11:23:27 -0500
X-Message-Number: 4
Wow, the below come thru our network from Tampa, Fl all the way to New
Castle, In some 800 + miles away!!! Now I will protect the callsign as
much as possible so know one just beats the c*ap out of him. Not that it
should happen, but I think path/uproto management needs to be discussed.
This is a little extreme in my view.
KG4Y**>N4SEM-12>AG4PX-11>KD4MOJ-5>WA4RWS-3>NA4V-1>NA4V-2>W4LAW-2>WIDE7*>APU256
<UI>:}KG4Y***>APRS,TCPIP,KG4Y*** <LINE TRUNCATED>
KG4Y**>N4SEM-12>K4LKL-10>WC4PEM-10>AA4QI-1>NA4V-2>W4LAW-2>KF4TNP-1*>WIDE7-3>APU6
25
<UI>:@061243z2815.55N/08241 <LINE TRUNCATED>
All the digi's around me are set to "NOID".... Anyway this covered a
bunch of un-needed restate in my opinion. Flame suit is on...
--
73, James, K9APR Webmaster
Chairman \ Coordinator Indiana Repeater Council
Tri-State APRS Working Group http://www.ircinc.org
http://www.tawg.org
mailto:k9apr@tawg.org
Run a APRS Website? Why not join the APRS Webring. http://www.tawg.org/join.htm
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Subject: D700 in Mazda Tribute/Ford Escape
From: Ralph Milnes <milnes1@rcn.com>
Date: Sun, 06 Apr 2003 12:42:31 -0400
X-Message-Number: 5
Anyone have any advice in installing a D700 on a Ford Escape/Mazda Tribute,
specifically suggested locations for each of the components, e.g. radio,
control head, antenna, etc.
73
Ralph
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Subject: TAPR and APRS at Dayton
From: "Jason Rausch" <ke4nyv@msn.com>
Date: Sun, 6 Apr 2003 12:19:17
X-Message-Number: 6
So whats going on at Dayton this year with TAPR? I thought it was strange
I haven't seen anything said yet. I know that the APRS booth will be there
but I was wondering about the banquet and the APRS pizza "shin-dig".
Stan, has a new webpage been put up for this year like the past two?
73's
Jason KE4NYV
www.ke4nyv.com
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