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ZL3AI > APRDIG 14.03.07 01:02l 264 Lines 9397 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 33 #1, 3/4
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To : APRDIG@WW
Message: 18
Date: Wed, 28 Feb 2007 16:28:13 -0800
From: "Ray McKnight" <shortsheep_at_worldnet.att.net>
Subject: RE: [aprssig] barcodes, etc.
Those laser tag games were a simple detector that alarmed when it was
illuminated. Nothing fancy.
The high end barcode scanners sell new for thousands, and typically get
about a grand for a used/refur'd one thru dealers. I sell at generally
50-75% below dealer refurb prices, but I can't determine what or when I can
find any specific item. You can find these type of scanners on eBay for
even as low as $100 or less but you're taking an awful risk from most
sellers who have no clue what they're selling, can't test them and almost
never include all the parts and accessories. Hay, that sounds a lot like a
Hamfest deal...
------------------------------
Message: 19
Date: Wed, 28 Feb 2007 16:34:55 -0800
From: "'Scott Miller'" <scott_at_opentrac.org>
Subject: RE: [aprssig] barcodes, etc.
>Those laser tag games were a simple detector that alarmed when it was
>illuminated. Nothing fancy.
The high-end systems used in professional laser tag arenas have some sort of
identification transmitted. You get a scorecard at the end of the game and
you can see who you shot and who shot you. Always wanted to try taking a
universal learning remote in one of those places, and see if I could get it
to learn the ID code from the gun. =]
Scott
N1VG
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Message: 20
Date: Wed, 28 Feb 2007 16:54:26 -0800 (PST)
From: Chris Rose <kb8uih_at_sbcglobal.net>
Subject: Re: [aprssig] barcodes, etc.
How much are the RF ID tags that runners use at marathons and such? We
have an event annually that is just 10K and the runners all have a tag tied
in their shoes that a detector reads as they go past the start/stop point.
Reads at the start and then again at the finish. I would have to ask some
people to see who has them and how much they spent to get this equipment.
It would have to be adapted to link with the packet system but that
shouldn't be too difficult?
Chris
KB8UIH
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Message: 21
Date: Wed, 28 Feb 2007 17:01:57 -0800 (PST)
From: Chris Rose <kb8uih_at_sbcglobal.net>
Subject: Re: [aprssig] station capability flags
A guy local to me uses a kantronics TNC that has the beacons tell what
function is active or available. One beacon says digi, one says I gate,
one says WX, etc. Doesn't seem too dificult to do.
Look up KC8YHQ-10 in Sanford, MI EN73.
Chris
KB8UIH
------------------------------
Message: 22
Date: Wed, 28 Feb 2007 20:29:55 -0500
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] station capability flags
>One thing that has always seemed missing in the APRS
>protocol is a way to indicate station attributes.
>Selecting an icon is quite restrictive. What if
>it's a digi with a weather station, or emergency
>power, or an Igate, or all of the above?
That is what the STATUS packet is for. Every station in APRS has two
packet types for permanent identificaiton of their station. The POSITION
packet that can contain everyting to know about his position and can also
include WX. In the status packet is where additional attributes were
designed to go. In fact, going back to the original 1992 paper on APRS,
the Status defined single letter atributes for just about everything
possible in ham radio and 36 or more tables each one that could have 36 or
more atributes. The possiblities were in the billions...
>... it seems to me we could get a very limited set of flags
>by using the TOCALL SSID bits. A quick scan of my tnc log
>file didn't show any TOCALL addresses using an SSID other than 0.
That would be a very limited set indeed. 4 bits only. And the reason you
don't see them used is becaue the TOCALL-SSID is a special kind of APRS
routing (though rarely used). A tocall of APRS-7 for example was supposed
to be the same as WIDE7-7. Thank heavens it was rarely implemented...
I sugges thte STATUS is wide open for these kinds of definitions...
Bob, Wb4APR
------------------------------
Message: 23
Date: Wed, 28 Feb 2007 17:35:50 -0800
From: "Ray McKnight" <shortsheep_at_worldnet.att.net>
Subject: RE: [aprssig] barcodes, etc.
One of the major shoe companies (I want to say Nike) is marketing a high
end shoe with RFID built in. Well, actually, I think it's an optional
insert you put in the insole of the shoe.
It has already been demonstrated by a group of college students that it can
be tracked to I believe about 1/2 mile and the "secure" personal ID is
easily hacked, as are most RFID cards. They used commonly available
computers and fairly simple equipment/software. Keep this in mind as
Congress proposes the National ID Card using RFID technology, that almost
anyone with fairly little investment and skill can secretly track you and
access the personal data in that card. They are also proposing to RFID all
paper money. Big Brother is here to stay.
------------------------------
Message: 24
Date: Wed, 28 Feb 2007 16:45:02 -0800
From: Mark Fellhauer <sparkfel_at_qwest.net>
Subject: [aprssig] RE: PC Card, barcodes, etc.
At 01:10 AM 2/28/2007, Ray McKnight wrote:
>Maybe so.
>
>But for us, Hams, is this important?
>
>Do most Hams run out and buy a new $2000 laptop just to play APRS?
>
>No.
>
>Do most Hams, tens of thousands, have laptops 3-5 yrs old?
>
>Probably.
There is a thing about keeping up with the times. And actually knowing
what things cost.
First off, you can buy a brand new laptop for under $800 these days. I'm
typing on an HP Pavilion DV5215 Turion 64 with 1gb of RAM, price at Fry's
was $750 with a $50 mail-in rebate (which I got). Even the Core Duo Fujitsu
A6020 laptop with 2GB of RAM and a 120GB hard drive was only $1200. Both
have a PCMCIA slot, because I did my research. That was my point. Someone
going out and buying a new laptop may just ASSUME that it will have a
PCMCIA slot in it. One may even look and see the 54mm slot that looks like
PCMCIA, but instead it may be Express Card 54.
Furthermore why would you design a NEW product that was already obsolete?
That makes no sense, whatsoever. How long is a laptop 3 to 5 years old
going to continue to work? And please, people, let's not start a whole
discussion about your Zenith 286 laptop that still works. Every year ups
the odds that old hardware will fail. Ham Radio is supposed to be about
emergency communications. Do we really want to place trust in products
that are superannuated? And if it breaks can you get replacement parts
easily and locally.
As for older equipment - several years ago (like 2001) I acquired several
dozen computers from a local TV station and tried to sell them at a
hamfest. We couldn't give them away. Not a single HAM in a tri-state
area wanted a free working computer with OS (Win98), up to 256MB of RAM and
PII & some PIII processors with mouse, keyboard, and SVGA Monitors. We
had some of them up and running ham radio related programs (APRS, Trunker,
SatTrack) as demo units. Even the Boy Scouts wouldn't take them for their
charity auction.
73,
Mark
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Message: 25
Date: Wed, 28 Feb 2007 20:33:58 -0800
From: "Greg D." <ko6th_greg_at_hotmail.com>
Subject: RE: [aprssig] Radio <> TNC Cables
Hi Danny,
Where did you find the diagram? I built half of one (just receive side),
and want to add transmit. I know it is not simply 2 wires... I have a 580
and an MFJ 1278T TNC.
Thanks,
Greg KO6TH
----Original Message Follows----
>From: "Danny Messano" <danny_at_messano.net>
>Subject: RE: [aprssig] Radio <> TNC Cables
>Date: Wed, 28 Feb 2007 12:39:09 -0500
>
>Alinco DJ-580T to MFJ TNC.
>
>I just found a decent diagram online, so I am gonna try to roll my own. So
>much for blowing a few extra bucks on a premade cable. ;)
>
>dm
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Message: 26
Date: Thu, 1 Mar 2007 05:38:43 GMT
From: "wb4trz_at_juno.com" <wb4trz_at_juno.com>
Subject: Re: [aprssig] X-DIGI/TNC-X
TNC-X/X-DIGI or TNC-X/
I have been using the tnc-x digi for over a year. No problems. One of
the best products I have every used.
Roger
------------------------------
Message: 27
Date: Thu, 1 Mar 2007 00:28:14 -0700
From: "Dave Sloan" <desloan_at_earthlink.net>
Subject: RE: [aprssig] Need Ideas
Hi Chris,
Thanks for the response. The cog train still makes its runs up the
mountain. We have hams ride the train sometimes part of the way up and or
down. The problem is that the course used by the runners isn't very close to
the train track nor the road. The road isn't very hard on cars but the 120
plus turns sure is hard on drivers. Of course the down hill is very hard on
brakes if a person doesn't know how to drive!
Dave
-----Original Message-----
>From: aprssig-bounces_at_lists.tapr.org
[mailto:aprssig-bounces_at_lists.tapr.org]
>On Behalf Of Chris Rose
>Sent: Wednesday, February 28, 2007 4:36 PM
>To: TAPR APRS Mailing List
>Subject: Re: [aprssig] Need Ideas
>
>There is a train that makes the trip up the mountain and an amateur repeater
>on top (unless something has happened to them) that would make
>communications and taking equipment up easier than wearing out a car. Does
>anyone have the authority to allow the train to be used to carry hams and
>their gear up and down?
>
>Chris
>KB8UIH
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