| |
ZL3AI > APRDIG 30.01.04 07:39l 241 Lines 9117 Bytes #999 (0) @ WW
BID : 2750-ZL3AI
Read: GUEST
Subj: TAPR Digest, Jan 27, 1/4
Path: DB0FHN<DB0RGB<DB0MRW<OK0PPL<DB0RES<ON0AR<7M3TJZ<ON0BEL<ZL2BAU<ZL2BAU<
ZL3VML
Sent: 040130/0452Z @:ZL3VML.#80.NZL.OC #:17849 [Chch-NZ] FBB7.00i $:2750-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Tuesday, January 27, 2004.
1. Re: etrex power
2. Re: etrex power
3. Re: Attended vs Unattended
4. Re: Attended vs Unattended
5. Re: APRS-WG dead?, was re: Attended vs Unattended
6. MOBILE versus "has-moved"
7. Re: APRS-WG dead?, was re: Attended vs Unattended
8. MOBILE and "has-moved"
9. Re: APRS-WG dead?, was re: Attended vs Unattended
10. Re: MOBILE versus "has-moved"
11. Re: MOBILE versus "has-moved"
12. Re: APRS-WG dead?, was re: Attended vs Unattended
13. Re: APRS-WG dead?, was re: Attended vs Unattended
14. CW???? station display
15. FW: [TM-D700] APRS RELAY
16. RE: CW???? station display
17. Re: CW???? station display
18. Re: CW???? station display<
19. CW stations
20. Re: CW???? station display
21. Re: APRS-WG dead?, was re: Attended vs Unattended
22. Re: CW???? station display
23. APRS Symbols
24. Re: FW: [TM-D700] APRS RELAY
25. Re: APRS-WG dead?, was re: Attended vs Unattended
26. Re: APRS-WG dead?, was re: Attended vs Unattended
27. And now for something completely different...
28. Re: And now for something completely different...
29. Re: And now for something completely different...
30. Re: And now for something completely different...
31. Re: APRS-WG dead?, was re: Attended vs Unattended
32. Magellan DX5200 GPS Antenna?
33. Re: Magellan DX5200 GPS Antenna?
34. Re: And now for something completely different...
35. GPS re-radiators?
36. Sound card interface query
37. Lyris, as usual, being obnoxious (Was: And now for something completely
different...)
----------------------------------------------------------------------
Subject: Re: etrex power
From: Derek Koonce <derek@dkoonce.com>
Date: Mon, 26 Jan 2004 23:49:08 -0800
X-Message-Number: 1
Laptop 5V USB power is regulated by internal power supply that is a
sync-buck from the battery. Thus, you can expect pretty stable 5V unless
the 5V gets loaded down by excessive current. Thus the 2 diode trick
could suffice. However, using the LM regulator or even a resistor and a
3V zener is not a bad idea.
Derek.
KE6JTP
>And you are relying on what as the regulating element? The internal
>resistance of your laptop power feed? What happens with different
>batteries in your latop? What happens when the laptop is operated
>on external power?
----------------------------------------------------------------------
Subject: Re: etrex power
From: Dave VanHorn <dvanhorn@cedar.net>
Date: Tue, 27 Jan 2004 08:54:44 -0500
X-Message-Number: 2
>The ones that hadn't had a chance to discharge yet.
VBG. My 30kV 0.003uF caps sit with straps on for that reason.
>If you're interested in a cheap digital Geiger counter design with LCD
>display (and soon to have RS-232 for radiation measurement and random number
>generation), or know a better way to regulate a high voltage power supply
>than using a shunt regulator with MOVs and zeners, or know of a stable
>source of cheap Geiger-Mueller tubes, let me know.
Very. do you have a web page?
>Man, that hurt.
ah feel yer pain. :)
----------------------------------------------------------------------
Subject: Re: Attended vs Unattended
From: "Curt, WE7U" <archer@eskimo.com>
Date: Tue, 27 Jan 2004 08:28:45 -0800 (PST)
X-Message-Number: 3
On Mon, 26 Jan 2004, Christensen, Eric wrote:
>So, when I move... Because my "house" station moved it is considered
>mobile? Even though it moved once but wasn't really mobile?
Yes. That happens so seldom that I don't consider it a problem. Of course
the newbie setup error of making your house and your mobile(s) have the
same callsign/SSID makes things interesting.
--
Curt, WE7U archer at eskimo dot com
Arlington, WA, USA http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: Re: Attended vs Unattended
From: "Curt, WE7U" <archer@eskimo.com>
Date: Tue, 27 Jan 2004 08:38:52 -0800 (PST)
X-Message-Number: 4
On Mon, 26 Jan 2004, Bob Bruninga wrote:
>On Mon, 26 Jan 2004, Henk de Groot wrote:
>>
>>If it was ever seen moving in the past or present, it must be mobile, is
>>that a more carefully worded phrase?
>
>Ah, but this VIOLATES the fundamental principal of APRS that ALL stations
>may be brought on line from ZERO with no aprior knowledge of anything and
>be able to fully participate in an event or emergency.
Trying to determine whether a station is mobile based on icon (I mean
_symbol_ darn it!) is fundamentally flawed as well: You can't depend on a
user to set the symbol properly. People choose their symbol for all kinds
of reasons. I've found it an unreliable indicator. Setting a flag based
on more-than-one-position-heard has been a much more reliable indicator for
us.
>Its only a name change to avoid USER ambiguity. I request that XASTIR
>and any other software that attempts to identify MOBILES, NOT use the
>MOVING or has-moved criteria. If you use that criteria, then call it
>MOVING or HAVE-MOVED. But dont call it MOBILE. That word is reserved for
>the subset of APRS symbols that represent "mobiles" whether they have
>moved at your event or not...
Look up mobile and moving in the on-line dictionaries. The definitions of
interest are so close as to be nearly one and the same.
--
Curt, WE7U archer at eskimo dot com
Arlington, WA, USA http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: Re: APRS-WG dead?, was re: Attended vs Unattended
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 27 Jan 2004 13:35:27 -0500 (EST)
X-Message-Number: 5
On Mon, 26 Jan 2004, Jeff King wrote:
>I'm curious (no need to raise shields), for all intensive purposes, is
>the APRS- WG, as a purality of members, now dead?
No, it is right now reviewing several things:
1) the proposed additional WAYPOINT symbol
2) the inconsistency in some programs with regard to the WHEELCHAIR symbol.
3) the proposal to add an OPERATOR ACTIVE bit
4) the proposal to add a PRIORITY bit
Bob
----------------------------------------------------------------------
Subject: MOBILE versus "has-moved"
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 27 Jan 2004 13:51:24 -0500 (EST)
X-Message-Number: 6
On Tue, 27 Jan 2004, Curt, WE7U wrote:
>>So, when I move... Because my "house" station moved it is considered
>>mobile? Even though it moved once but wasn't really mobile?
>
>Yes. That happens so seldom that I don't consider it a problem. Of
>course the newbie setup error of making your house and your
>mobile(s) have the same callsign/SSID makes things interesting.
Wow, I move my station all the time. If I am at home, my WB4APR call is
there. If I am on travel at either of the two grammas, then my WB4APR
station is there.
If I am at work, and want to get APRS mail there, then I fire up there.
I repeat. The criteria for MOBILE as a "definition" is by the subset
of SYMBOL characters that I defined as "MOBILE". The determination of
wheter a station MOVED or not is simply that, a "MOVED" station and we
should be careful not to confuse the two... in any APRS client.
I appologize that until recently, I did not realize that other client
programs did not have the list of the "MOBILE" subset, because it never
made it into the spec... Here it is again...
Mobiles if any of these Primary symbols: '<=>0COPRSUXY[^abefgjkpsuv
Mobiles if any of these altrnte symbols: /0>AKS^nsuv
Weather if any of these altrnte symbols: (*:<@BDEFGHIJTW_egptw{
Digis if symbol is #&I <== notice this includes HF and Igates too
Again, this is not a requirement, but it is a selection criteria when one
wants to view a "selection". I am not demanding the everyone use this
criteria, but I offer it to anyone that wants to have the same consistent
definition of what constitutes a "mobile" SYMBOL in APRS...
This is independent of MOVEment, past, or present. MOVEMENT is another
excellent selection criteria, but different. That is my only point.
Bob
----------------------------------------------------------------------
Subject: Re: APRS-WG dead?, was re: Attended vs Unattended
From: "Scott Miller" <scott@opentrac.org>
Date: Tue, 27 Jan 2004 11:04:11 -0800
X-Message-Number: 7
I haven't seen any traffic on the spec list in ages. Is it still going?
I'm glad to see that you're still taking a lead role, Bob. A lot of
projects in the open source community (the Linux kernel, for one) have
demonstrated that it's important to have a single focal point. Left up to
committee, nothing would ever get done.
That's not to say I actually AGREE with your decisions, but it's better than
stagnation. =]
Scott
N1VG
----------------------------------------------------------------------
Read previous mail | Read next mail
| |
