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ZL3AI > APRDIG 07.12.03 11:52l 317 Lines 11125 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Dec 02, 1/5
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Tuesday, December 02, 2003.
1. WX Station decode...
2. Decoding packets from Lacrosse Technology WX station(s)
3. Re: WX Station decode...
4. Shelter List??
5. Re: Mini-Din
6. Garmin GPS 15H OEM Receiver
7. Re: WX Station decode...
8. Re: WX Station decode...
9. Re: aprssig ID vs NOID
10. Paths (again, gasp)
11. Software TNC for palm ?
12. Re: Paths (again, gasp)
13. Re: WX Station decode...
14. Re: aprssig ID vs NOID
15. Re: WX Station decode...
16. Re: WX Station decode...
17. Looking for email addr for G3NRW
18. Need help forming proper weather packets
19. Re: WX Station decode...
20. Re: WX Station decode...
21. Re: WX Station decode...
22. Re: WX Station decode...
23. Re: Need help forming proper weather packets
24. Re: Need help forming proper weather packets
25. Re: Software TNC for palm ?
26. Re: WX Station decode... Kenwoods
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Subject: WX Station decode...
From: Jeffrey Nast <jpnast@lca.duluth.mn.us>
Date: Mon, 01 Dec 2003 23:10:30 -0600
X-Message-Number: 1
There is a WX station about 56 miles from me that never decodes
correctly on my D7. The position comes through fine, but all I see is
the text representation ".../001g003t021#0000" on the display and
nothing on the formatted section. Or is it the D7 that is the problem?
Also, the WX station is broadcasting at 2 minute intervals. Any
suggestions for a broadcast interval for weather stations?
Here is one of the packets and what I think may be not decoding
correctly. Assistance in decoding would be appreciated:
!4647.04N/09042.41W_.../001g003t021#000000PIC
Piece Interpretation (My thoughts)
===========
============================================================================
! a "Complete Weather Report Format - with Lat/Lon position,
no Time stamp (OK)
4647.04N Lat (OK)
/ Symbol Table ID (OK)
09042.41W Lon (OK)
_ Symbol Code (OK)
..../001 Wind Direction/Speed (Are the "..." permissible in this
format? Or should it be padded with "000"? I see in the spec where this
is permissible for a "c...s...g..." format.)
g003 Peak gust (OK)
t021 Temperature (OK)
#000000 Raw Rain Counter
PIC Station type? Would this be confused for "P" Rainfall since
midnight? Looks like a home-grown weather station using a PIC, which may
explain the absence of wind direction...
Thank you!!
-Jeff
KC0MKS-7
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Subject: Decoding packets from Lacrosse Technology WX station(s)
From: "Sean \\The RIMBoy\\" <sean@rimboy.com>
Date: Mon, 1 Dec 2003 18:57:48 -0600 (CST)
X-Message-Number: 2
Anyone try decoding the packets from a Lacrosse Technology WX station? I
picked up one at xxxxxx tonight, $39.99USD for a temp/humidity TX with 2
RX devices. I figured I'd play with this one before purchasing the $99.99
setup with the wind indicator.
The temp/humidity TX broadcasts at a regular interval on 433.920 (I know,
hell for a 432 setup). I used multimon under linux to try to identify the
packet to no avail. It sounds like a pulse, rapid fire and if I'm
counting correctly there are 4, maybe 5 pulses. It looks like between
each pulse it drops key, the signal meter on my yaesu rig pulsed
accordingly. If there's interest I'll make a wav available. It'd be nice
to figure out how to deploy a cheaper WX station rather that offer a Peet
to the various powers (theft, lightening) that be.
Here's info on the TX
http://www.lacrossetechnology.info/s_specs/transmitters/sp_tx4.html
http://www.lacrossetechnology.info/faq/transmitters/faq_tx4.html
LMK if more info is needed. I wish I had a better idea of what I'm
listening to.
Sean...
--
The punk rock will get you if the government don't get you first.
--Old 97's
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
KG4NRC http://www.rimboy.com Your source for the crap you know you need.
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Subject: Re: WX Station decode...
From: James Jefferson <jj@aprsworld.net>
Date: Tue, 2 Dec 2003 00:52:09 -0600
X-Message-Number: 3
Hi Jeff -
I can probably explain this weather station. It's mine. And I wrote the
firmware and designed the hardware it is running on. :-)
The packet meets APRS spec, and is shown as valid according to aprsdec (my
gold standard). None of the Kenwoods will decode it however - the problem
of the Kenwoods. I didn't want to send many extra bytes of data just so the
broken Kenwoods would display it correctly. aprsworld.net, findu, xastir,
and possibly other APRS clients parse the packets correctly.
>Also, the WX station is broadcasting at 2 minute intervals. Any
>suggestions for a broadcast interval for weather stations?
Yes, this is my mistake. It's actually transmitting faster than that. I
accidentally left my test firmware installed in the weather station and it
transmits at 50 second rate. It was supposed to be three minutes, which
shouldn't have causes and undue stress on the APRS network up north. This
is causing me problems as well - the station is solar powered and the power
budget appears to be negative while transmitting that fast.
Unfortunately it is a 1000 mile round trip for me to go from Ames, Iowa to
Madeline Island, Wisconsin. I won't be able to do that until early January.
I intend to implement a mechanism so the transmit rate and other pertinent
parameters can be controlled by sending an APRS message to the weather
station. That could save many miles of driving, $$$, and cold winter nights
in an unheated cabin.
>Here is one of the packets and what I think may be not decoding
>correctly. Assistance in decoding would be appreciated:
Your interpertation is entirely correct.
>.../001 Wind Direction/Speed (Are the "..." permissible in this
>format? Or should it be padded with "000"? I see in the spec where this
>is permissible for a "c...s...g..." format.)
The "..." indicates that no data is present. I think this is right. Bob B.?
>PIC Station type? Would this be confused for "P" Rainfall since
>midnight? Looks like a home-grown weather station using a PIC, which may
>explain the absence of wind direction...
PIC is that station type. For more details of the weather station you can
visit:
http://www.windmonitor.net/products/
Sometime I hope to document the weather stations better. There are actually
a handful of them on APRS. KB0VYO-12, KB0THN-2, K0NY-2 and a few temporary
test stations. KB0VYO-12 and KB0THN-2 are entirely stand-alone solar
powered weather stations.
73's,
-Jim
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Subject: Shelter List??
From: "Dave Sloan" <desloan@earthlink.net>
Date: Tue, 2 Dec 2003 04:30:16 -0700
X-Message-Number: 4
How is the SHELTER list used with WinAprs? Is it used with any other
version? I checked the documentation for both DOS and Windows and didn't
find anything.
Tnx & 73,
Dave N0EOP
----------------------------------------------------------------------
Subject: Re: Mini-Din
From: Earl Needham <needhame1@yucca.net>
Date: Tue, 02 Dec 2003 06:59:00 -0700
X-Message-Number: 5
At 05:14 AM 11/11/2003 -0800, Reid Crowe wrote:
>Am I really behind or something? Since when did RadioShack stop carrying
>six pin mini Din connectors?
Aren't these simply PS-2 connectors? A PS-2 extension cable is what I use
to connect to my Yaesu FT-1500M. Just cut off one end and put on a DB-9 or
whatever you need to connect to the TNC.
7 3
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: 11127WU/7.22yrs!
----------------------------------------------------------------------
Subject: Garmin GPS 15H OEM Receiver
From: Larry McDavid <lmcdavid@lmceng.com>
Date: Tue, 02 Dec 2003 06:10:52 -0800
X-Message-Number: 6
Is anyone using the Garmin GPS 15H OEM receiver? This is a moderately
low-power (33 mA @ 12 vdc), very small GPS engine with RS-232 output.
How about the older Garmin GPS25 OEM engine?
--
Best wishes,
Larry McDavid W6FUB
Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
----------------------------------------------------------------------
Subject: Re: WX Station decode...
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 2 Dec 2003 12:21:13 -0500 (EST)
X-Message-Number: 7
On Mon, 1 Dec 2003, Jeffrey Nast wrote:
>There is a WX station about 56 miles from me that never decodes
>correctly on my D7.
>Here is one of the packets and what I think may be not decoding
>correctly. Assistance in decoding would be appreciated:
>
>!4647.04N/09042.41W_.../001g003t021#000000PIC
It has no WIND DIRECTION. If it has a wind speed of 1 MPH, then it must
have a direction...
----------------------------------------------------------------------
Subject: Re: WX Station decode...
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 2 Dec 2003 12:39:04 -0500 (EST)
X-Message-Number: 8
On Tue, 2 Dec 2003, James Jefferson wrote:
>I can probably explain this weather station. It's mine....
>The packet meets APRS spec.... None of the Kenwoods will decode it
>however... I didn't want to send many extra bytes of data just so the
>broken Kenwoods would display it correctly... aprsworld.net, findu,
>xastir, and possibly other APRS clients parse the packets correctly.
Wow, interesting comments:
1) The kenwoods do properly decode a valid WX packet
2) The example packet is *not* in conformance with the spec in that
it has a wind SPEED but has no direction
3) The fact that some other clients plot an indeterminate, non-compliant
wind vector is not necessarily a valid measure of "validity"
4) Damning the vast majority of MOBILE APRS users to no weather data
becasuse you personally dont use a mobile kenwood is not good for the
general APRS objectives and community..
You are sending a packet that contains a wind speed without a wind
direction. That is inconsistent.
>>.../001 Wind Direction/Speed (Are the "..." permissible in this
>>format? Or should it be padded with "000"? I see in the spec where this
>>is permissible for a "c...s...g..." format.)
Yes, but that is only for the positionless WX format where there is a
c... and s... field. In the COMPLETE format, there is no c... or s...
field. Those fields are FIXED length and without designators and are
*required* fields.
>The "..." indicates that no data is present. I think this is right. Bob B.?
Nope, not in the complete format...
>Sometime I hope to document the weather stations better. There are
>actually a handful of them on APRS. KB0VYO-12, KB0THN-2, K0NY-2 and a
>few temporary test stations. KB0VYO-12 and KB0THN-2 are entirely
>stand-alone solar powered weather stations.
Wow, what great assets, why do you not intend to support mobile users of
WX data?
de WB4APR, Bob
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