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ZL3AI > APRDIG 15.02.07 05:36l 275 Lines 9675 Bytes #999 (0) @ WW
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To : APRDIG@WW
Today's Topics:
1. Re: Voice Alert redux (Charles Doughtie)
2. Re: Voice Aert redux (The Bland Ranch)
3. RE: APRS Icons on Garmin Receivers (Bill Diaz)
4. Re: Voice Aert redux (Curt Mills)
5. Re: Voice Alert Simplicity! (Wes Johnston, AI4PX)
6. Re: Voice Aert redux (Wes Johnston, AI4PX)
7. [AD] New Display Setups (Brian B. Riley)
8. Re: Voice Aert redux (Curt Mills)
9. Re: Voice Aert redux (Bob Bruninga )
10. Re: D700-external PIC processing (Curt, WE7U)
11. Re: D700-external PIC processing (Wes Johnston, AI4PX)
12. RE: Color code for fading stations? (Robert Bruninga)
13. Re: D700-external PIC processing (william.diaz_at_comcast.net)
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Message: 1
Date: Sun, 11 Feb 2007 10:03:54 -0800 (PST)
From: Charles Doughtie <n5exy_at_yahoo.com>
Subject: Re: [aprssig] Voice Alert redux
--- Earl Needham <needhame1_at_plateautel.net> wrote:
>At 07:44 AM 2/11/2007, Robert Bruninga wrote:
>>CAVEAT: As long as some fool in the area is not running it 24/7
>
>A few years ago, I was in the DFW area and several of the
>digis over there were causing me to hear their packets. Of course, I
>assumed they were running 100 Hz PL -- who wouldn't?
I have made voice alert contacts also but normally I only run it while
"traveling" now. There is one of those jerks in the Austin area, and this
causes me to turn the volume down while rolling mobile. So - guess what?
TWO (or more - count 'em) alligators on the air now. And, I must admit, I
have parked the car and forgotten that the rig was on, which just adds to
the problem.
Maybe these lids have e-mail - callsign_at_arrl.net? Maybe we could/should
spam-spham-sham-shame - - send them copies of messages like these??
Just a thought. Gotta get me one of those APO things at the next hamfest.
de Charlie, N5EXY,
South Suburban Greater Hutto
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Message: 2
Date: Sun, 11 Feb 2007 10:12:45 -0800
From: The Bland Ranch <root_at_blandranch.net>
Subject: Re: [aprssig] Voice Aert redux
The what if base stations had PL on RX only but not on TX? That way, you
could know about other mobiles but not be annoying the neighbors on a
regular basis.
Chuck
NA6BR
Quoting Robert Bruninga <bruninga_at_usna.edu>:
>>>... (has *anyone* ever made a random voice alert contact?
>>>It seems... easier to work... DX than... another APRSuser.
>>
>>I have made two or three -- in the past -- oh -- say -- 6
>>or 8 years! Lee Dahlen was one, Bob Bruninga was another.
>>And in the middle of nowhere, too!
>
>That's the joy of APRS Voice Alert. If someone is there and
>within 2 or 3 miles of you, you cannot miss the opportunity for
>a live simplex QSO.
>
>CAVEAT: As long as some fool in the area is not running it 24/7
>from a basestation which causes everyone in that area to turn
>their volume down so that they don't have to hear his 24/7
>false-alarms... In that case, its back to normal mobile ham
>radio... Ships passing in the night with no comms...
>
>We have such a signal in Washington DC... Voice Alert packets
>are on, but no one home (listening)... I turn down my volume
>and then forget for days to bring it back up.
>
>Like we say, it only takes a few un-informed individuals running
>it from base stations or 24/7 parked cars to wipe out Voice
>Alert in an area.
>
>Bob, Wb4APR
------------------------------
Message: 3
Date: Sun, 11 Feb 2007 12:32:16 -0600
From: "Bill Diaz" <william.diaz_at_comcast.net>
Subject: RE: [aprssig] APRS Icons on Garmin Receivers
Jason,
See below:
>-----Original Message-----
>From: aprssig-bounces_at_lists.tapr.org
>[mailto:aprssig-bounces_at_lists.tapr.org] On Behalf Of Jason Winningham
>Sent: Sunday, February 11, 2007 11:55
>To: TAPR APRS Mailing List
>Subject: Re: [aprssig] APRS Icons on Garmin Receivers
>
>On Feb 11, 2007, at 11:14 AM, Bill Diaz wrote:
>
>>What is the command used to force it into this monitor mode?
>AI 1
>alpha india space one
I tried this with my D7 and it echoed all internal commands, and the
position data as you indicated.
LIST 01,KC9XG-14,4134320008033101,/j,01,:,,,02000------
Not sure of all the fields yet. The 8th char of the position field
indicates N or S LAT and the 16th char indicates E or W. The last field may
indicate elevation in 10ths of a meter, if available, though some variation
may exist, depending on the source.
Will play a bit more to see what the unknown fields contain.
Thanks,
Bill KC9XG
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Message: 4
Date: Sun, 11 Feb 2007 11:35:05 -0800 (PST)
From: Curt Mills <archer_at_eskimo.com>
Subject: Re: [aprssig] Voice Aert redux
On Sun, 11 Feb 2007, Robert Bruninga wrote:
>That's the joy of APRS Voice Alert. If someone is there and
>within 2 or 3 miles of you, you cannot miss the opportunity for
>a live simplex QSO.
>Like we say, it only takes a few un-informed individuals running
>it from base stations or 24/7 parked cars to wipe out Voice
>Alert in an area.
This thread makes me wonder if something simple couldn't be done for
non-Kenwood APRS stations: Perhaps a piezeo buzzer that could be
enabled/disabled in the firmware or with a switch on a Tinytrak4 or
Tracker2. The software could determine if they were within range and
whether they were mobile. You know, some nice configurable options.
When I heard the buzzer I could swing my other 2-meter radio there quickly
and give a yell.
No PL required, but we'd need a flag in the comment field to let others
know we were monitoring. This could be added automatically by the firmware
for our transmits if the piezo was enabled.
--
Curt, WE7U. archer at eskimo dot com
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!"
------------------------------
Message: 5
Date: Sun, 11 Feb 2007 15:31:14 -0500
From: "Wes Johnston, AI4PX" <wes_at_kd4rdb.com>
Subject: Re: [aprssig] Voice Alert Simplicity!
Also, the last voice alert contact I made was HEARD on my speaker much
longer that DECODED by the kenwood. So if I had beenwatching my GPS it
would not have shown the other station until long after I heard his packet
racket with 100hz PL tone. Matter of fact, I think I only got two, maybe
three good hits decoded out of him.
Wes
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Message: 6
Date: Sun, 11 Feb 2007 15:34:28 -0500
From: "Wes Johnston, AI4PX" <wes_at_kd4rdb.com>
Subject: Re: [aprssig] Voice Aert redux
The problem with that is that it takes less signal to make a PL tone decoder
trigger than to decode a packet. In other words, I can hear you on voice
alert alot more times that I can decode ax.25 packets. In theory what you
suggest would work just as well, but in practice the PL tone wins hands
down.
Wes
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[commercial content deleted]
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Message: 8
Date: Sun, 11 Feb 2007 14:11:16 -0800 (PST)
From: Curt Mills <archer_at_eskimo.com>
Subject: Re: [aprssig] Voice Aert redux
On Sun, 11 Feb 2007, Wes Johnston, AI4PX wrote:
>The problem with that is that it takes less signal to make a PL tone decoder
>trigger than to decode a packet. In other words, I can hear you on voice
>alert alot more times that I can decode ax.25 packets. In theory what you
>suggest would work just as well, but in practice the PL tone wins hands
>down.
I understand the simplicity of the circuit bit, but then the PL tone
doesn't have any "smarts" w.r.t. whether the signal is a base station
and/or moving, etc. With the TT4 or T2 solution (with a piezo) you could
selectively ignore some of those local stations that don't play by the
rules, plus use it with radios that don't have PL-out or PL-decode.
--
Curt, WE7U. archer at eskimo dot com
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!"
------------------------------
Message: 9
Date: Sun, 11 Feb 2007 18:48:54 -0500 (EST)
From: "Bob Bruninga " <bruninga_at_usna.edu>
Subject: Re: [aprssig] Voice Aert redux
>>That's the joy of APRS Voice Alert. If someone is
>>there and within 2 or 3 miles of you, you cannot
>>miss the opportunity for a live simplex QSO.
>... makes me wonder if something simple couldn't be
>done for non-Kenwood APRS stations: Perhaps a piezeo
>buzzer that could be enabled/disabled in the firmware or
>with a switch on a Tinytrak4 or Tracker2.
There is nothing that restricts Voice Alert to only kenwoods. ANy tracker
or mobile APRS station can use it as long as the tracker TNC is connected
to the discriminator output instead of the speaker.
And since many such trackers do not even use the receiver, then they can
run voice alert trivially. Just set CTCSS. (and make sure the tracker is
turned off when the car (and driver) are off.
And anyone even without APRS or packet or GPS or anything can still run
Voice Alert by setting his radio to 144.39 with CTCSS-100 while traveling.
He will hear when any other APRS voice alert is nearby too. The only
thing he does not have is his own Pl100 packet PING alerting others to his
presence.
But heck, if everyone else is running voice alert with packet, then he can
hear them.
There is nothing magic about the VOICE ALERT concept other than the simple
concept that we have all those MOBILES out there on a KNOWN NATIONAL freq.
Why not set PL100 and be able to contact each other by voice too.
Bob, Wb4APR
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