| |
ZL3AI > APRDIG 02.01.04 12:53l 282 Lines 9421 Bytes #999 (0) @ WW
BID : 2594-ZL3AI
Read: GUEST
Subj: TAPR Digest, Jan 01, 1/3
Path: DB0FHN<DB0RGB<DB0MRW<DB0ERF<DB0FBB<DB0GOS<DB0EEO<DB0RES<ON0AR<ZL2BAU<
ZL2BAU<ZL3VML
Sent: 040102/1040Z @:ZL3VML.#80.NZL.OC #:15970 [Chch-NZ] FBB7.00i $:2594-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Thursday, January 01, 2004.
1. MFJ 1270c
2. Re: MFJ 1270c
3. Re: MFJ 1270c
4. Re: APRS CWXXXX ID
5. Re: APRS CWXXXX ID
6. Re: New APRS862 (for DOS)
7. Re: New APRS862 (for DOS)
8. Re: New APRS862 (for DOS)
9. Fwd: Weekend Meteors
10. Trace Route on Findu?
11. Re: Trace Route on Findu?
12. Re: Trace Route on Findu?
13. Re: Trace Route on Findu?
14. BPL?
15. Re: BPL?
16. Re: BPL?
17. Re: Trace Route on Findu?
18. KAM TNC
19. Re: Trace Route on Findu?
----------------------------------------------------------------------
Subject: MFJ 1270c
From: Terry Godley <tnsley@sbcglobal.net>
Date: Wed, 31 Dec 2003 21:20:43 -0800 (PST)
X-Message-Number: 1
Happy New Year.
I read on a APRS site that a MFJ 1270c tnc can be used for APRS
digipeater.
I can not remember where I saw the mod. at.
Has anyone seen this?
Thanks
Terry
W6WTG
Bakersfield, Ca.
----------------------------------------------------------------------
Subject: Re: MFJ 1270c
From: "Stephen H. Smith" <WA8LMF2@aol.com>
Date: Thu, 1 Jan 2004 02:00:32 -0800
X-Message-Number: 2
Terry Godley wrote on 12/31/2003, 9:20 PM:
>I read on a APRS site that a MFJ 1270c tnc can be used for APRS
>digipeater.
>I can not remember where I saw the mod. at.
>Has anyone seen this?
By itself in stock condition, it will only be capable of being a dumb
RELAY digi. It's OEM internal firmware supports only standard packet
digipeating and has no APRS-specific smarts (i.e. WIDEn-N call-sign
substitution digipeating and duplicate supression).
To give it this capability, you will have to either:
o Run it in KISS mode in conjunction with a program on a PC such as
DigiNed (a DOS program that will run off a floppy on even an old '286
clunker) or UI-View32 (a comprehensive Windows-based do-everything APRS
application that also implements a full WIDEn-N digipeater capability).
o Give the TNC a "brain transplant" by replacing it's standard
firmware EPROM with one containing UI-DIGI firmware. UI-DIGI transforms
standard TNC2 clones such as the MFJ-127x series into a dedicated smart,
stand-alone (no PC required) APRS digipeater with WIDEn-N, TRACEn-N,
duplicate supression and more.
Stephen H. Smith wa8lmf (at) 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
----------------------------------------------------------------------
Subject: Re: MFJ 1270c
From: Randy Allen <ka0azs@earthlink.net>
Date: Thu, 01 Jan 2004 08:00:36 -0500
X-Message-Number: 3
For the software to burn into the EPROM:
http://xoomer.virgilio.it/msavegna/uidigi-e.htm
Also, a site with suggested settings and explanations:
http://www.qsl.net/n8deu/uidigi_eprom_settings.htm
We've been running a digi that I programmed using this stuff for over a
year now, so it can't be THAT hard!! ;-)
Hope this helps
--
Randy Allen, KAĜAZS
EC, Montgomery CO Ohio
OH Dist. 3 ARES Web Page:
http://www.qsl.net/ohd3ares/
----------------------------------------------------------------------
Subject: Re: APRS CWXXXX ID
From: Bob Bruninga <bruninga@usna.edu>
Date: Thu, 1 Jan 2004 10:37:01 -0500 (EST)
X-Message-Number: 4
On Tue, 30 Dec 2003, Chris Schwab wrote:
>We specified the stations we wanted to see on RF, and didn't enable generic
>gating of all of the CW stations. Why would you think we shouldn't be doing
>it this way? As you said below, we are taking responsibility for the
>transmissions under our callsigns..
OK, sounds fine to me. SOunds like your group has thought it out and your
network can handle the load.
thanks
Bob
----------------------------------------------------------------------
Subject: Re: APRS CWXXXX ID
From: Bob Bruninga <bruninga@usna.edu>
Date: Thu, 1 Jan 2004 10:57:21 -0500 (EST)
X-Message-Number: 5
Concerning IGate PATHS:
THe fundamental "rule" that we develped back in 1994 or so when we began
using HFgates to inject HF packets into local LANs was that NO GATE should
(in general) inject any other traffic beyond ONE wide. THis kept any QRM
or inteference clearly within the local area of that GATE and also made it
easy to always find the SOURCE of the extra gated traffic if needed.
If GATES begin sending data via longer hops, they are then beginning to
add traffic load into areas that are not under their direct observation
and which can have siginficantly different traffic patterns. Thus, it is
just not good practice nor courteous to GATE stuff beyond one WIDE
(unless, of course the GATE has the concurance of those operators in all
affected areas).
Also, IGATES in general are there to support end to end global messaging.
But this is a very weak path. Even if there is only ONE digi on each end,
the end-to-end "RF" path then is 4 hops forward and 8! hops for the ACK
success. Each additional hop on each end just makes the probability of
success vanish to zero. Its amazing when it works at all.
Having IGates using paths of WIDE,WIDE or longer gives users the false
sense of linking large areas into the Global APRS-IS, but it is a false
impression because the reliability is so low. If we want better IGate
coverage, then the better way to do it with better reliability is to put
in more IGates with shorter paths.
One's local area may be different. But doing stuff over multiple hops is
in general, to the first order concept, just not a good approach to
reliable APRS network design...
de WB4APR, Bob
----------------------------------------------------------------------
Subject: Re: New APRS862 (for DOS)
From: Bob Bruninga <bruninga@usna.edu>
Date: Thu, 1 Jan 2004 11:10:11 -0500 (EST)
X-Message-Number: 6
Ah ha! Beat you to it. Started on it last night... not ready yet tho...
On Tue, 30 Dec 2003 wa6ylb@theworks.com wrote:
>How about a APRSMAX version? Last Max version was 846.
>
>>Subject: [aprssig] New APRS862 (for DOS)
de WB4APR@amsat.org, Bob
PCsat WEB page http://www.ew.usna.edu/~bruninga/pcsat.html
ISS-APRS FAQ: http://www.ew.usna.edu/~bruninga/iss-faq.html
CUBESAT Designs http://www.ew.usna.edu/~bruninga/cubesat.html
APRS LIVE pages http://www.ew.usna.edu/~bruninga/aprs.html
APRS SATELLITES http://www.ew.usna.edu/~bruninga/astars.html
MIM/Mic-E/Mic-Lite http://ssdl.stanford.edu/mims/
----------------------------------------------------------------------
Subject: Re: New APRS862 (for DOS)
From: Randy Allen <ka0azs@earthlink.net>
Date: Thu, 01 Jan 2004 11:43:53 -0500
X-Message-Number: 7
Bob,
While you're in a programming mood, how about incorporating Smart Beacon?
Hope you (and the rest of the list) have a Happy New Year!
73
--
Randy Allen, KAĜAZS
EC, Montgomery CO Ohio
OH Dist. 3 ARES Web Page:
http://www.qsl.net/ohd3ares/
----------------------------------------------------------------------
Subject: Re: New APRS862 (for DOS)
From: Bob Bruninga <bruninga@usna.edu>
Date: Thu, 1 Jan 2004 12:03:27 -0500 (EST)
X-Message-Number: 8
On Thu, 1 Jan 2004, Randy Allen wrote:
>While you're in a programming mood, how about incorporating Smart Beacon?
APRSdos has always had a 1st-order level of smarts in that it only sends a
beacon at the original rate if the position has changed. Whenever the
position stays still (whether GPS, or FIXED, or an OBJECT or whatever), if
it has not moved since the last report, then the TIME to the next beacon
is doubled.
This is the decaying algorithm that was fundamental to ALL aprs
information, not just position data. That is, new data is refresehed more
often than old data and old data eventually decays out of the system.
Its too bad that I could not get all the other clinet programs to
implement this fundamental APRS function.
But yes, I will consider addingsome more smarts when I get the chance..
Bob
----------------------------------------------------------------------
Subject: Fwd: Weekend Meteors
From: blitz <blitz@macronet.net>
Date: Thu, 01 Jan 2004 15:11:01 -0500
X-Message-Number: 9
>Space Weather News for January 1, 2004
>http://spaceweather.com
>
>The annual Quadrantid meteor shower is one of the year's finest, yet
>people seldom see it. The shower peaks in early January when northern
>skies are frequently cloudy, and the chill air discourages lingering
>outdoors. If you've never seen the Quadrantids, this weekend might be a
>good time to try. Forecasters expect a flurry of meteors, perhaps 25 to 60
>per hour, on Sunday morning, January 4th. Sky watchers in western Europe
>and eastern parts of North America will have the best view--weather
>permitting.
>
>Visit spaceweather.com for more information. Happy New Year!
----------------------------------------------------------------------
Subject: Trace Route on Findu?
From: Earl Needham <needhame1@yucca.net>
Date: Thu, 01 Jan 2004 13:23:57 -0700
X-Message-Number: 10
Is there an easy way on Findu to show (on a map) what route my packets are
taking to get from my station to an IGATE? Yes, I can read the raw packet,
but a map showing the route would be helpful, in my opinion.
Thanks,
Earl
Earl Needham, KD5XB, Clovis, New Mexico DM84jk
KD5XB-2>APW251,PCSAT-1%:=3425.83N/10313.55W-PHG7150/WinAPRS 2.5.1
-EARL_CLOVIS -251-<630>
SETI@Home: 11212WU/7.27yrs
----------------------------------------------------------------------
Read previous mail | Read next mail
| |
