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ZL3AI > APRDIG 13.07.06 00:50l 279 Lines 10414 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 25 #10, 1/3
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From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Today's Topics:
1. Re: Inernet Server Challenge (VE7GDH)
2. Inernet Server Challenge (dick_at_kb7zva.com)
3. APRS station on voice repeater - how to monitor (Doug Ferrell)
4. Re: APRS station on voice repeater - how to monitor (Ben Jackson)
5. Re: APRS station on voice repeater - how to monitor (Richard Amirault)
6. Re: APRS station on voice repeater - how to monitor (Mark Earle)
7. Re: APRS station on voice repeater - how to monitor (VE7GDH)
8. Re: APRS station on voice repeater - how to monitor (Robbie, wa9inf)
9. Re: APRS station on voice repeater - how to monitor (Robert Bruninga)
10. Re: APRS station on voice repeater - how to monitor (VE7GDH)
11. Re: Inernet Server Challenge (Robert Bruninga)
12. RE: Inernet Server Challenge (Dave Baxter)
13. Re: Inernet Server Challenge (VE7GDH)
14. APRS and Scouting National exposure (Robert Bruninga)
15. Re: Re: [aprssig] APRS station on voice repeater - how to monitor
(Patrick Green)
16. RE: Inernet Server Challenge (Robert Bruninga)
17. APRSTV Episode 2 - OpenTracker Assembly (John Habbinga)
18. RE: APRSTV Episode 2 - OpenTracker Assembly (scott_at_opentrac.org)
19. Re: APRSTV Episode 2 - OpenTracker Assembly (John Habbinga)
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Message: 1
Date: Sun, 9 Jul 2006 09:57:11 -0700
From: "VE7GDH" <ve7gdh_at_rac.ca>
Subject: Re: [aprssig] Inernet Server Challenge
Bob WB4APR wrote...
>What we need is a FREE HAM radio program that
>runs on a PC and the internet and LOOKS like a
>HAM radio... (with) no other human distractions
>such as race and gender and age and accent.
Let me see if I've got this straight... you're proposing a video game to
get young people interested in amateur radio? (Couldn't resist!) Sounds
like a good idea and it could work. I'm not sure why you think that race,
gender age or accent are a distraction - in life or in amateur radio - but
the concept sounds interesting. Anything that is "fun" will attract people
to the hobby. Amateur radio is a lot of different things to different
people. A program like you are describing could get a lot of new people
interested, and not just young people.
73 es cul - Keith VE7GDH
--
"I may be lost, but I know exactly where I am!"
------------------------------
Message: 2
Date: Sun, 09 Jul 2006 13:12:32 -0700
From: dick_at_kb7zva.com
Subject: [aprssig] Inernet Server Challenge
Ham University has a few dozen games and the one that comes to mind is
called PENTODE.
Does most everything you want I think. Use google to find the freeware
download.
It's a morse code learning game. Very nice even for us adults <g>.
Dick, KB7ZVA
APRSWest
------------------------------
Message: 3
Date: Sun, 9 Jul 2006 21:44:44 -0400
From: "Doug Ferrell" <kd4moj_at_kd4moj.org>
Subject: [aprssig] APRS station on voice repeater - how to monitor
Greetings:
Seems like one of our local aprs users has forgotten to switch off the TNC
while on one of the local 2m repeaters. I've tried in vain to monitor with
Winpack and Hyperterm to see what the station is..... even tried monitoring
via the input. Anyone got any ideas on how to get these packets to show up?
I have the usual Mon on, MCON, MCOM, MSTAMP etc to no avail.... I've had a
brain fart on how to get the decoding done........
....DOUG
KD4MOJ
------------------------------
Message: 4
Date: Sun, 9 Jul 2006 18:59:05 -0700
From: Ben Jackson <ben_at_ben.com>
Subject: Re: [aprssig] APRS station on voice repeater - how to monitor
On Sun, Jul 09, 2006 at 09:44:44PM -0400, Doug Ferrell wrote:
>
>Seems like one of our local aprs users has forgotten to switch off the TNC
>while on one of the local 2m repeaters. I've tried in vain to monitor with
>Winpack and Hyperterm to see what the station is..... even tried monitoring
>via the input.
You'll probalby have to monitor the uplink, since a voice repeater won't
catch the first second of the transmission.
What frequencies? You'll need a lot of listeners (or a trip to the
repeater base station!) to catch the offenders.
(btw if it becomes really serious you could record some of the packet
tails and get someone to manually decode them, and possibly get enough
to match the packet to similar ones on APRS-IS).
--
Ben Jackson AD7GD
http://www.ben.com/
------------------------------
Message: 5
Date: Sun, 09 Jul 2006 22:15:49 -0400
From: "Richard Amirault" <ramirault_at_verizon.net>
Subject: Re: [aprssig] APRS station on voice repeater - how to monitor
I used APRS to decode the packets when this happend locally. It worked just
fine for me. Have you tried that?
Richard Amirault N1JDU Boston,
MA, USA
n1jdu.org "Go Fly A Kite"
------------------------------
Message: 6
Date: Sun, 09 Jul 2006 21:21:47 -0500
From: Mark Earle <wa2mct_at_mearle.com>
Subject: Re: [aprssig] APRS station on voice repeater - how to monitor
>>I have the usual Mon on, MCON, MCOM, MSTAMP etc to no avail.... I've had a
>>brain fart on how to get the decoding done........
You may need MALL ON, MCON ON, MCOM ON
Those should do it if you are getting a whole packet. You may have trouble
if the offending signal is mixed voice and data, and it is not likely you
will decoded unless you hear the station direct.
His Transmit has pre-emphasis
The repeater likely is not "flat" (few are), but adds more pre-emphasis
The tones to make the data are now double-emphasized.
So you need to decode on the input, and that means getting a signal at your
receive site somewhat above the noise floor.
) ) de WA2MCT Mark
( ( Echolink 99190 Grid Square EL17HQ
) ) You will be assimilated... oooh, coffee!!
_|****| http://www.findu.com/cgi-bin/find.cgi?wa2mct-7 Home
( | | http://www.findu.com/cgi-bin/find.cgi?call=wa2mct-9 Mobile
`|____| wa2mct_at_mearle.com wa2mct_at_juno.com wa2mct_at_arrl.net
------------------------------
Message: 7
Date: Sun, 9 Jul 2006 19:20:08 -0700
From: "VE7GDH" <ve7gdh_at_rac.ca>
Subject: Re: [aprssig] APRS station on voice repeater - how to monitor
DOUG KD4MOJ wrote...
>Seems like one of our local aprs users has forgotten to switch off the
>TNC while on one of the local 2m repeaters. I've tried in vain to monitor
>with Winpack and Hyperterm to see what the station is..... even tried
>monitoring via the input. Anyone got any ideas on how to get these
>packets to show up? I have the usual Mon on, MCON, MCOM,
>MSTAMP etc to no avail.... I've had a brain fart on how to get the
>decoding done........
Listening on the output, you could miss the beginning while the repeater
isn't keyed up yet. However, you said that you had already tried monitoring
the input. Could you hear the "offending" signal on the input? If the signal
is too weak to copy properly on the input, you cold go back to the output
frequency and turn PASSALL on. Presume you already have MON ON.
73 es cul - Keith VE7GDH
--
"I may be lost, but I know exactly where I am!"
------------------------------
Message: 8
Date: Sun, 09 Jul 2006 21:50:29 -0500
From: "Robbie, wa9inf" <mwrobertson_at_comcast.net>
Subject: Re: [aprssig] APRS station on voice repeater - how to monitor
Ben Jackson wrote:
>On Sun, Jul 09, 2006 at 09:44:44PM -0400, Doug Ferrell wrote:
>
>>Seems like one of our local aprs users has forgotten to switch off the TNC
>>while on one of the local 2m repeaters. I've tried in vain to monitor with
>>Winpack and Hyperterm to see what the station is..... even tried monitoring
>>via the input.
>
>You'll probalby have to monitor the uplink, since a voice repeater won't
>catch the first second of the transmission.
>
>What frequencies? You'll need a lot of listeners (or a trip to the
>repeater base station!) to catch the offenders.
>
>(btw if it becomes really serious you could record some of the packet
>tails and get someone to manually decode them, and possibly get enough
>to match the packet to similar ones on APRS-IS).
Some one could set their PASSALL ON on their TNC and see if they can
then catch enough of their packet to decode who may have forgotten to
turn of their tracker and using it for voice, :-)
Robbie
------------------------------
Message: 9
Date: Sun, 09 Jul 2006 23:58:20 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: Re: [aprssig] APRS station on voice repeater - how to monitor
>>Seems like one of our local aprs users has forgotten to
>>switch off the TNC while on one of the local 2m repeaters.
>>I've tried in vain to monitor with Winpack and Hyperterm
>>to see what the station is..... even tried monitoring
>>via the input.
This is exactly why Signal Strength Signal location was built into APRS.
SImply call up the PHG display which will display the radio range of all
APRS stations, then look at all those stations who's PHG circle overlaps
the PHG circle of the voice repeater. Those are your candidates.
Then send out a BULLETIN on APRS that says, LISTEN on XXXX (the repeater
input frequency) and report if you hear the packet. If so, enter an APRS
DFS report (DF Signal Strength Report).
Boom, done. Now you will have the over lapping signal contrours from all
that data and can easily narrow it down to the one station whos PHG signal
contour intersects with those who report a DFS and heard the signal. And
it cannot be any of the stations who's PHG circles intersect any of the
0-DFS reports (of not hearing it)
Slam-dunk. Done.
But, unfortunately, you have to eliminate most of the UIview stations,
since most of them do not transmit their PHG signal contours (because it is
not built in), and they also do not have a DFS signal reporting function
so that others can plot their data either. Of course, a UIview station CAN
manuallly enter his PHG data into his position packet and he can manually
format a DFS report if he reads the spec and looks at how to do it and
types in the exact byte structure.
To see how we used this technique on the last stuck signal in our area,
see:
http://www.ew.usna.edu/~bruninga/dfing.html
Oh, to make a DFS report, replace your PHG string with a DFS string and
change the power byte to a signal report byte on the scale of 0 to 9.
That's all there is to it... Your antena height and gain is the same in
both the PHG and DFS reports.
GOod luck.
de WB4APR, Bob
------------------------------
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