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ZL3AI > APRDIG 05.08.03 19:40l 287 Lines 11004 Bytes #999 (0) @ WW
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To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Friday, August 01, 2003.
1. RE: Kantronics' latest offering...
2. RE: Kantronics' latest offering...
3. RE: Kantronics' latest offering...
4. RE: Kantronics' latest offering...
5. Re: Bargain alert
6. Re: More APRS perl findu.com code examples
7. RE: Kantronics' latest offering...
8. RE: Kantronics' latest offering...
9. D700 and digitraveler update
10. RE: Kantronics' latest offering...
11. RE: Kantronics' latest offering...
12. TNCless 1-wire weather?
13. RE: Kantronics' latest offering...
14. Re: Kantronics' latest offering...
15. RE: Kantronics' latest offering...
16. Re: Kantronics' latest offering...
17. Re: TNCless 1-wire weather?
18. Re: More APRS perl findu.com code examples
19. GARMIN Track Log to APRS converter ?
20. Re: More APRS perl findu.com code examples
21. Re: GARMIN Track Log to APRS converter ?
22. Re: More APRS perl findu.com code examples
23. Re: GARMIN Track Log to APRS converter ?
24. Re: GARMIN Track Log to APRS converter ?
25. Re: More APRS perl findu.com code examples
26. Request
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Subject: RE: Kantronics' latest offering...
From: "Sadowski, Allan" <allan.sadowski@ncshp.org>
Date: Fri, 1 Aug 2003 09:00:53 -0400
X-Message-Number: 1
Wish there was more data.... than just a slick sales brochure...
Over the air 9600 sounds good.... seems that these days an 8 channel
GPS is behind the power curve... what with 12 channel units with WAAS
are way down in price now...
Hate the form factor...
It can't take much heat... ...
It says it can act as a digipeater... but there should be some cause for
concern about the way the specs are quoted...
On the other hand... until more data is available... it looks
promising...
ALOHA
AH6LS
>-----Original Message-----
>From: Richard Sharp, KQ4KX [SMTP:kq4kx@arrl.net]
>Subject: [aprssig] Kantronics' latest offering...
>
>Has anyone seen the latest offering from Kantronics? Looks interesting...
>
>Obviously, they're marketing this for commercial users but...the internal
>VHF radio will cover the HAM 2m band.
>
>http://65.68.105.10/udc/spec/talon_spec.pdf
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Subject: RE: Kantronics' latest offering...
From: Gerry Creager N5JXS <gerry.creager@tamu.edu>
Date: Fri, 01 Aug 2003 08:30:53 -0500
X-Message-Number: 2
Argh! Misunderstandings...
Most (say, 90%) of the time, 8 channels is more'n enough to see all visible
birds. 6 channels will give 64 potential solutions for overdetermined
fixes, yielding almost always the "best" solution for autonomous
determination.
Lots and lots of channels is great when you're trying to lock in seconds,
or get raw observables, but if you can wait 45 sec for an initial warm
start lock, (and realizing that a REAL cold-start will take as long as 21
minutes) the results are not significantly different betwen my old
6-channel OnCore and a Motorola M12.
gerry
--
Gerry Creager -- gerry.creager@tamu.edu
Network Engineering -- AATLT, Texas A&M University
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
Page: 979.228.0173
Office: 903A Eller Bldg, TAMU, College Station, TX 77843
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Subject: RE: Kantronics' latest offering...
From: "Bill Diaz" <william.diaz@comcast.net>
Date: Fri, 1 Aug 2003 09:07:22 -0500
X-Message-Number: 3
Gerry,
Cobra sells a GPS receiver with 18 channels. See http://www.cobra.com for
details.
"18 parallel channel GPS continuously tracks and uses up to 18 satellites
to compute and update user's position giving the quickest acquisition time
of any handheld recreational GPS receiver available."
The also have ASAP, a trademarked method that "Gets you up and running up
to twice as fast as any other recreational GPS receiver".
Gerry, good buddy, put your ears on. Can't believe that Cobra (who also
manufactures CB's Radar detectors, FRS radios) would mislead anyone. 18
channels obviously works better than 12, just ask anyone with 2 CB antennas
(6" chrome loading coils only). Kinda of amazed that they included only 18
channels. 23 channels would have made more sense.......
Bill KC9XG
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Subject: RE: Kantronics' latest offering...
From: "Mike Yetsko" <myetsko@insydesw.com>
Date: Fri, 1 Aug 2003 10:29:09 -0400
X-Message-Number: 4
Can you drip any more venom in your post if you try?
Would it have made a difference if the name was Uniden instead of Cobra?
Hey, they're essentially the same you know. Might as well throw in Radio
Shack too.
Geesh, I realized that some hams are insecure about CBers, but I never
thought I'd see the day it would crossover to GPS!
Mike
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Subject: Re: Bargain alert
From: "Sean \\The RIMBoy\\" <sean@rimboy.com>
Date: Fri, 1 Aug 2003 10:01:30 -0500 (CDT)
X-Message-Number: 5
On Fri, 18 Jul 2003, Bud Talbot wrote:
>Done deal. The TXD pin on the D7 gps port puts out enough voltage to wake
>up the digitraveler. When you turn on the D7, the gps turns on. I soldered
>up a cable, went outside, and the gps had a lock within 60 seconds. I'd
>still like to hook the digitraveler up to the pc to see what the reception,
>error, etc are like.
Update on the D700. It would appear that unlike the D7, the D700 does not
put out enough voltage to turn the digitraveler on. Or, to put it better,
it will put out enough voltage when you power up the D700 and it will put
out enough whenever a station is heard, but the green light goes off
immediately after. (I know that it's presumably becase the D700 is trying
to send posit data back to a smarter GPS).
Anyone have any suggested work arounds to this?
Also, I went ahead and broke down and bought the Rat Shack 12v to 6v
adapter. It's not cheap and I could probably engineer my own, but it's
off the shelf and appears to work.
Also, it's documented in the manual but the digitraveler does take a type
"B" connector for the power and it's readily available at Rat Shack.
Sean...
--
Believing I had supernatural powers, I slammed into a brick wall.
--Paul Simon
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
KG4NRC http://www.rimboy.com Your source for the crap you know you need.
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Subject: Re: More APRS perl findu.com code examples
From: Steve Dimse <k4hg@tapr.org>
Date: Fri, 1 Aug 2003 13:03:17 -0400
X-Message-Number: 6
>http://www.findu.com/cgi-bin/breadcrumb.cgi?call=vk4khp-9&geo=http://www.tech-
>software.net/brisbane.geo&start=10000
This is not aimed at the poster in particular, but is simply to cover my
own butt, anyone using geo files should take note. In these litiginous
times on the internet, I find it important to keep my own site free of
copyright violations. The image in this URL contains a copyright notice, I
hope that the rights have been obtained to host this image on a server and
modify it. findU accepts no responsibility for anyone posting or using URLs
using images which violate copyrights. In other words, I'm not paying for
your lawyer ;-)
What would be a great service (at least for US users) is if someone created
a cgi which accessed a TIGER map, automatically generating the URL and
saving the image and geo file automatically. I could host such a thing on
my server, and the advantage would be none of the delay that typically
comes from using a TIGER map.
Steve K4HG
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Subject: RE: Kantronics' latest offering...
From: "Mark Fellhauer" <sparkfel@qwest.net>
Date: Fri, 01 Aug 2003 12:18:01 -0500
X-Message-Number: 7
At 08:30 AM 8/1/2003, Gerry Creager N5JXS wrote:
>Argh! Misunderstandings...
>
>Most (say, 90%) of the time, 8 channels is more'n enough to see all
>visible birds. 6 channels will give 64 potential solutions for
>overdetermined fixes, yielding almost always the "best" solution for
>autonomous determination.
>
>Lots and lots of channels is great when you're trying to lock in seconds,
>or get raw observables, but if you can wait 45 sec for an initial warm
>start lock, (and realizing that a REAL cold-start will take as long as 21
>minutes) the results are not significantly different betwen my old
>6-channel OnCore and a Motorola M12.
So you're saying that underlying technology doesn't make a difference? And
that newer hardware doesn't work better than the older 8 channel
units? That seems to fly in the face of at least my anecdotal experiences
with 8 channel GPS receivers vs 12+ channel (parallel) receivers. But
then again I've only owned a dozen or so GPS units in the last 8 years...
Mark
KC7BXS
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Subject: RE: Kantronics' latest offering...
From: "Curt Mills, WE7U" <hacker@tc.fluke.com>
Date: Fri, 1 Aug 2003 10:35:34 -0700 (PDT)
X-Message-Number: 8
On Fri, 1 Aug 2003, Mark Fellhauer wrote:
>So you're saying that underlying technology doesn't make a difference? And
>that newer hardware doesn't work better than the older 8 channel
>units? That seems to fly in the face of at least my anecdotal experiences
>with 8 channel GPS receivers vs 12+ channel (parallel) receivers.
Hopefully you're not talking about the "8" channel Garmin units versus the
12-channel ones. The "8" channel Garmin units were really 1-channel units
that time-multiplexed one receiver across up to 8 satellites. Trimble and
Magellan used to have 2 or 3 channels that they'd multiplex across multiple
satellites.
The old 1-channel Garmins sucked: Ok for boating/planes, but get into
urban canyons or trees and they lost lock, or couldn't obtain lock on a
warm/cold start. This is the Garmin 38/40/45 class of receivers. There
were others. I had experience with a 45.
My 6-channel parallel Trimble SV6 receivers work pretty darn well, as do my
12-channel parallel Garmins.
Any of the parallel ones that are 6-channel or more seem to work great. I
think Garmin does an overdetermined solution that makes the solution a bit
more accurate on their 12-channel units. Perhaps other manufacturers now
do the same?
FWIW: I _have_ had a lock on 12 satellites at once, with the NMEA data
showing data from all 12 satellites being used in the position. Was very
cool to see! The nicest thing about it was that a buddy of mine told me it
couldn't be done. That means I had to get proof.
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto: A tax on people who are bad at math!"
"Windows: Microsoft's tax on computer illiterates!" -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
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