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ZL3AI > APRDIG 22.08.06 00:12l 270 Lines 8711 Bytes #999 (0) @ WW
BID : 8629-ZL3AI
Read: GUEST
Subj: [APRSSIG] Vol 26 #19, 2/3
Path: DB0FHN<DB0FOR<DB0MRW<DK0WUE<DB0RES<TU5EX<IW2OAZ<ZL2BAU
Sent: 060821/2158Z @:ZL2BAU.#87.NZL.OC #:65071 [Waimate] $:8629-ZL3AI
From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Message: 10
Date: Fri, 18 Aug 2006 17:49:05 -0500 (CDT)
From: wa7nwp_at_jnos.org
Subject: Re: [aprssig] Anyone using TCP/IP over radio ?
>Can you help me setup my laptop ?
>
>I have a kenwood D700A as a radio/tnc.
That's a good radio but you need a real TNC.
What OS?
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Message: 11
Date: Fri, 18 Aug 2006 15:50:50 -0700
From: "Stephen H. Smith" <wa8lmf2_at_aol.com>
Subject: Re: [aprssig] Tracking my trip
Ryan.Tourge_at_sheriff.co.warren.ny.us wrote:
>Slightly off topic of this thread but...
>
>I have a 2003 Honda Civic. I notice that the voltage switches from 14.4
>to ~12-13 volts intermittently. I assuming its some high tech battery
>maintenance idea but it it's a real pain trying to configure my OT to
>act on voltage changes.
>
>Anyone experienced anything similar?
>
>Ryan
>K2RRT
This is a perfectly normal voltage variation for a so-called 12-volt system
when the engine is running. Typically the voltage will start out high just
after the engine is started (and the battery voltage is low). Then after
the initial charging rush, the voltage will drop somewhat. [Note that most
mobile transceiver power output specs for "12-volt-operated" radios are
quoted at 13.8 VDC since this is more typical of a mobile with the engine
running..]
A healthy 12 volt car battery will drop to something like 12.6-12.7 volts
after the engine is shut off for a few minutes.
If you are trying to sense engine-on-and-running vs engine-off-and-parked,
you need to set the voltage detect threshold at about 12.9 volts.
--
Stephen H. Smith wa8lmf (at) aol.com
EchoLink Node: 14400 [Think bottom of the 2M band]
Home Page: http://wa8lmf.com
NEW! JavAPRS Filter Port 14580 Guide
http://webs.lanset.com/wa8lmf/aprs/JAVaprsFilters.htm
UI-View Misc Notes and FAQ
http://webs.lanset.com/wa8lmf/aprs/UIview_Notes.htm
"APRS 101" Explanation of APRS Path Selection & Digipeating
http://webs.lanset.com/wa8lmf/DigiPaths
Updated "Rev G" APRS http://webs.lanset.com/wa8lmf/aprs
Symbols Set for UI-View,
UIpoint and APRSplus:
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Message: 12
Date: Fri, 18 Aug 2006 23:56:00 +0100
From: John Ronan <jronan_at_tssg.org>
Subject: Re: [aprssig] Beacon Doesn't
On 18 Aug 2006, at 11:43, Robert Bruninga wrote:
>No, PHG must be the first 7 bytes of the position comment field.
>That is the APRS format. Some programs may accept it elsewhere in
>The packet, but that is just sloppy programming. de Wb4APR
>
;EI7MLR-0 *010000z5237.06N/00646.71Wr PHG5840 430.950 +7.6
I seem to need a space between the "r" and the "P" for the THD7 to
recognise the object. Is this a bug/feature or me?
Regards
de John
EI7IG
--
John Ronan <jronan_at_tssg.org>, +353-51-302938
Telecommunications Software & Systems Group, http://www.tssg.org
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Message: 13
Date: Sat, 19 Aug 2006 09:51:44 +1000
From: "Andrew Rich" <vk4tec_at_tech-software.net>
Subject: RE: [aprssig] Anyone using TCP/IP over radio ?
Windows on one box and LINUX on the other
Andrew Rich
Amateur radio callsign VK4TEC
email: vk4tec_at_tech-software.net <mailto:vk4tec_at_tech-software.net>
web: http://www.tech-software.net
Brisbane AUSTRALIA
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Message: 14
Date: Fri, 18 Aug 2006 21:07:51 -0400
From: "Tourge, Ryan R." <Ryan.Tourge_at_sheriff.co.warren.ny.us>
Subject: RE: [aprssig] Tracking my trip
>-----Original Message-----
>From: aprssig-bounces_at_lists.tapr.org
[mailto:aprssig->bounces_at_lists.tapr.org] On Behalf Of Stephen H. Smith
>Sent: Friday, August 18, 2006 6:51 PM
>To: TAPR APRS Mailing List
>Subject: Re: [aprssig] Tracking my trip
>
>
>A healthy 12 volt car battery will drop to something like 12.6-12.7
>volts after the engine is shut off for a few minutes.
>If you are trying to sense engine-on-and-running vs
>engine-off-and-parked, you need to set the voltage detect threshold at
>about 12.9 volts.
It drops below that threshold while running and under motion. That's why
I was wondering if anyone has delt with this before. Curious if it is
how Honda intended it to operate or if it needs attention.
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Message: 15
Date: Fri, 18 Aug 2006 21:46:50 -0400
From: "Wes Johnston, AI4PX" <wes_at_kd4rdb.com>
Subject: Re: [aprssig] Tracking my trip
anything below 13.0V you can bet the car isn't running. Also, I'd set the
"don't transmit below voltage" to 12.6. It usually takes about 5 or 6 days
for my wife's car to run that low.
Wes
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Message: 16
Date: Fri, 18 Aug 2006 22:08:59 -0400
From: "Tourge, Ryan R." <Ryan.Tourge_at_sheriff.co.warren.ny.us>
Subject: RE: [aprssig] Tracking my trip
Problem being it's doing this while its running
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Message: 17
Date: Fri, 18 Aug 2006 21:35:43 -0600
From: Joel Maslak <jmaslak-aprs_at_antelope.net>
Subject: Re: [aprssig] Tracking my trip
format=flowed
On Aug 18, 2006, at 8:08 PM, Tourge, Ryan R. wrote:
>Problem being it's doing this while its running
You might want to check all of your ground straps. Weird electrical issues
are often a ground going bad somewhere in the vehicle.
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Message: 18
Date: Fri, 18 Aug 2006 23:28:27 -0500
From: "Stan - N0YXV" <n0yxv_at_gihams.org>
Subject: RE: [aprssig] Beacon Doesn't
Actually the biggest issue isn't with the software. It's with people that
have Digi's setup with wrong or missing PHG information. Would be nice if
software was more specific but it doesn't help when it's feed wrong data to
begin with. The vast majority of the Digi operators do it correctly but it
only takes a couple of miss configured PHG strings to really mess up a
display.
>-----Original Message-----
>From: Robert Bruninga [mailto:bruninga_at_usna.edu]
>Sent: Friday, August 18, 2006 5:25 AM
>
>Ah thanks.
>Yes, the displayed PHG circles for objects such as repeaters should be
>A different color and/or separately displayed from other stations.
>But I can see Your point if the software you are using is that limited.
>Thanks, Bob
>
>>-----Original Message-----
>>I really did think about it. Only had two objections. 1.)
>>Didn't know the _complete_ PHG data for the objects I was
>>adding. 2.) Didn't like the way the Voice Repeater Circles
>>messed with the APRS Digipeater circles. You're SUPPOSED to
>>be able to view only one or the other in UI-View's PHG
>>plug-in but that ASSUMES that everybody has setup there PHG
>>circles correctly. When I _try_ to filter out the Voice
>>Repeaters PHG circles I wind up filtering out some of the
>>APRS Digi's at the same time.
>>
>>Quoting Bob Bruninga <bruninga_at_usna.edu>:
>>
>>>>I use BEACON all the time to transmit objects.
>>>>
>>>>#! /bin/bash/usr/sbin/beacon -c N0YXV -d APJI23 -s radio "
>>>>;146.94 *`date'+%H%M%S'`z4055.55N/09821.75Wr
>>>>146.94- Tone123 Link24&18"
>>>
>>>It would be nice to include in all such RF objects, the PHG
>>string so
>>>that these repeaters show up on APRS maps displaying their
>>relative RF range.
>>>Antenna Elevation is one of the most important parameters
>>in VHF Ham
>>>Radio and is fundamental information to the APRS user.
>>>
>>>Just a thought.
>>>Bob
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Message: 19
Date: Fri, 18 Aug 2006 21:47:05 -0700
From: Ben Jackson <ben_at_ben.com>
Subject: Re: [aprssig] Cheap USB GPS available again -- more detail
Ok, I cracked one open. Forgot to mention, these units have a magnet in
the bottom of the case.
It's about 1 3/8" square and a little over 1/4" thick (mostly antenna).
The chipset is the Prolific PL-6313 "GPS Baseband Processor". You can
usually download this from Prolific's website, but it's broken at the
moment.
There's a SiGe SE 4100L RF downconverter.
The USB interface is the PL-2303X. Same deal about the datasheet.
I found the 3.3V TTL serial on a via between the two chips.
The antenna seems to be secured only by one fat through hole, so you can
probably replace it with a vertical-mount SMA where it is with relative
ease. The antenna lead goes to a flea-sized cap so you could also pull
that and solder to the flea-sized trace or pad.
There's a little battery which is probably to back up the almanac for
fast restart. Another thing you might be able to remove to save weight.
Bottom of the unit says it draws 35mA. It does have a blinking LED
(1 blink/sec while locked) and of course the USB and USB pullup resistors
which might be removable.
I poked around looking for a locked frequency standard, but I'm sure it
will be much easier to find when the PL-6313 datasheet is back online.
--
Ben Jackson AD7GD
http://www.ben.com/
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