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ZL3AI > APRDIG 27.05.03 21:06l 239 Lines 9229 Bytes #999 (0) @ WW
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Subj: TAPR Digest, May 24, 2/3
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: Balloon Position Report Page
From: Bob Bruninga <bruninga@usna.edu>
Date: Sat, 24 May 2003 15:40:22 -0400 (EDT)
X-Message-Number: 14
Great idea on the Balloons! Good work.
Just today, I was wondering about a page just for mobiles. This would
make it easy to see quickly if there was an event somewhere going on
without all the clutter of the other 10,000 statiosn on the air...
Its not as easy as selecting for just the Balloon ICON, but selecting all
of the typical mobile objects AND anything with a CSE and SPEED would get
just about everything.
Bob
de WB4APR@amsat.org, Bob
PCsat WEB page http://www.ew.usna.edu/~bruninga/pcsat.html
ISS-APRS FAQ: http://www.ew.usna.edu/~bruninga/iss-faq.html
CUBESAT Designs http://www.ew.usna.edu/~bruninga/cubesat.html
APRS LIVE pages http://www.ew.usna.edu/~bruninga/aprs.html
APRS SATELLITES http://www.ew.usna.edu/~bruninga/astars.html
MIM/Mic-E/Mic-Lite http://ssdl.stanford.edu/mims/
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Subject: RE: Garmin Rhino?
From: Bob Bruninga <bruninga@usna.edu>
Date: Sat, 24 May 2003 15:58:31 -0400 (EDT)
X-Message-Number: 15
And a year later, we still dont konw anything about how to decode the
Rhino! I think someone needs to just pull out a scope and spend a litle
time on this... These days we dont even need to build a modem, just let
someone do it in a soundcard!
>On Tuesday, March 19, 2002 06:52, Jon Ogden wrote:
>>I don't know if this came up in the discussion of the Garmin Rhino
>>pricing, but tvnav.com has the MAP listed for both models:
>>
>>Rhino 110: $xxx.xx
>>Rhino 120: $xxx.xx
Or find a mole at Garmin...
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Subject: Re: Balloon Position Report Page
From: Robbie <mwrobertson@attbi.com>
Date: Sat, 24 May 2003 15:13:02 -0500
X-Message-Number: 16
I just ran a findu on *-14 and had a lot of hits, I assume semi-tractors.
I wonder if the ballons were to use -11 like some of them once did, easy to
cull most of the 10,000 other stations out, :-)
Robbie, wa9inf
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Subject: RE: Garmin Rhino?
From: "Spider" <spider@rivcom.net>
Date: Sat, 24 May 2003 13:25:58 -0700
X-Message-Number: 17
----- Original Message -----
From: "Bob Bruninga" <bruninga@usna.edu>
To: "TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Sent: Saturday, May 24, 2003 12:58 PM
Subject: [aprssig] RE: Garmin Rhino?
Cheaper on Ebay and I did confim (a few weeks ago) the data for the heard
stations (other rhinos) does output on the serial port!!!!! The
possibilities!!!!
For the price of a GPS and a radio....not too bad!
Jim, WA6OFT
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Subject: mic-e progress report
From: Wes Johnston <wes@johnston.net>
Date: 24 May 2003 16:57:22 -0400
X-Message-Number: 18
I have installed a TNC at the repeater site for a 70cm repeater in
virginia. Since it uses a CAT1000, and the radio's COR signal goes HIGH on
receive, it was a simple matter of putting a 270 ohm resistor in series
with the COR line, and wiring the kpc3plus's CTRL A line (in mute mode) to
the CAT1000 end of that 270ohm resistor. Receive audio is tapped at pin
13, COR at pin 6 of the DB25 on the CAT1000's input plug.
The KPC3plus was programmed to pull pin 8 on the radio plug to ground when
a packet was heard (CTRL A MUTE 1). The TNC was also in KISS mode with a
loop back connector on it's rs232 port. This way, you can send the
shortest packet possible and the packet will be TX'ed on aprs to the local
digipeater. The local digipeater can expand the packet using a program
such as digined.
Results.
When a mic-e packet is heard on the input, the COR line is shunted to
ground. The packet is heard on the output of the repeater for about 10ms.
This is about the equivalent of the length of time it takes the repeater
controller to mute a touch tone and put a cover tone on it. If the
controller had an audio delay board, you would never hear the packet at
all.
When a normal packet is heard, and the repeater is silent, as expected, the
repeater never keys up. The packet is picked off the audio input and the
repeater only sees COR for about 10ms, not long enough for it to even think
about coming on air.
Problems:
I used shielded cables in every wire of this system. Still, voice audio
coming thru the repeater sounded clipped and distorted with the TNC in the
line. We added a ground wire from the TNC, aprs radio, and repeater
controller and the distortion went away. Now the only problem we have is
there is a slight hiss in the audio to the repeater. It's only enough that
you hear it during quiet times - like the hangtime just before the repeater
drops off air. I'm not sure why, but we are speculating that RF from the
repeater is getting back into the audio path. I used a radio shack db25
breakout box to insert the TNC inline, and it's a metalized shell. The
only other thing I can think of is to put ferites in the line, or use
transformer isolation separate the TNC from the repeater. I dunno? It's
not catastrophic, but the voice users will definitely notice the hiss. Any
suggestions?
Wes
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Subject: RE: Garmin Rhino?
From: Bob Bruninga <bruninga@usna.edu>
Date: Sat, 24 May 2003 18:32:09 -0400 (EDT)
X-Message-Number: 19
On Sat, 24 May 2003, Spider wrote abou tthe Garmin inteegrated FRS/GPS:
>Cheaper on Ebay and I did confim (a few weeks ago) the data for the heard
>stations (other rhinos) does output on the serial port!!!!! The
>possibilities!!!!
A serial port? YOu gotta be kidding. They have a serial port?????
Any of us could decode that! Wow, surely some APRS person has one and can
capture the file..
de WB4APR@amsat.org, Bob
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Subject: RE: Garmin Rhino?
From: Bob Bruninga <bruninga@usna.edu>
Date: Sat, 24 May 2003 18:39:46 -0400 (EDT)
X-Message-Number: 20
On Sat, 24 May 2003, Spider wrote about FRS/GPS:
>I did confim (a few weeks ago) the data for the heard
>stations (other rhinos) does output on the serial port!!!!! The
>possibilities!!!!
>For the price of a GPS and a radio....not too bad!
Geeze, at that price, I'd put an FRS receiver at our REPEATER site and let
my kids carry a Rhino at $199 rather than $600 worth of APRS GPS/HT combo
that is even heavier! I see no reason why we cannot use Rhino's in APRS.
Since they must have some kind of callsign mechanism, those purests who
want to interpret the Radio Rules narrowly can then place at the gateway
site a LIST of authorized users that will be gatewayed into the APRS
system. Thus, at your public service event, you pre-list those radio
personnel carrying a Rhino that you want to be gated to APRS and then it
is all legal.
Wow, tell me more!
Id put a gateway at my kids school (and vicinity) and other places where I
need to find my kids...
de WB4APR@amsat.org, Bob
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Subject: RE: Garmin Rhino?
From: Wes Johnston <wes@johnston.net>
Date: 24 May 2003 18:46:02 -0400
X-Message-Number: 21
One of the guys on the garmin rino yahoo group says he cut his open and
put a BNC on it for receive only (yeah right), and with a 14dbi yagi, he
received a posit from an unmod'ed rino 20 odd miles away.
Garmin has just added a polling feature. With an unmodified rino, you
can select to poll just ONE of your neighbors, and the garmin will POLL
all rino's on it's screen. So one ?query? will cause all radios to send
their posit. With another rino set at home base to receive posit's
listening with a good antenna would hear all of the stations and keep up
with them.
Wes
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Subject: ANET/Radio Mirror/HAM WEB
From: Bob Bruninga <bruninga@usna.edu>
Date: Sat, 24 May 2003 18:49:34 -0400 (EDT)
X-Message-Number: 22
John,
Any chance of adding a module to Radio Mirror so that it can serve as a
link for standard Browsers like I proposed? My impression of Radio Mirror
is that all the hard work has been done. But it is a unique application
that serves a unique file server application.
What I want is to run RADIO-MIRROR-X that then lets me use a normal
Browser normally (while my PC is connected to only a Kenwood D700 at
9600). To all end users, it is almost transparent except for its own
status window. The user just uses his browser to access any URL on the
planet.
The only thing the status window shows is what files you have captured
currently and their "title" and their PERCENT received. Click on any one,
and it comes up in your browser.
The advantage of this for come-as-you-are public service and special
events is that it requires NO training. Everyone can operate it. And
expectations do not violate the principle of least astonishment. Wow,
what a program that would be and boon to HAM radio support!
de WB4APR@amsat.org, Bob
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