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ZL3AI > APRDIG 13.07.06 00:50l 123 Lines 4400 Bytes #999 (0) @ WW
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From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Message: 16
Date: Mon, 10 Jul 2006 12:05:47 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Inernet Server Challenge
>>>dave_at_emv.co.uk 07/10/06 4:53 AM >>>
>[For CW on the internet]... Bob. Take a look at....
><http://morsecodeonweb.homestead.com/>
>Firewalls should be not a problem.
>
>Sort of surprised you hadn't found that, it was at the top
>the searchlist as a result of Googling for "CW internet".
Thanks for the links! The CW Messenger program appears to be almost what
I was proposing. But not quite. Yes, it can send CW between stations on
the interneet, but the "one-on-one" connection between stations is just
that, one-on-one and also is established by clicking on a callsign.
I was after a more realistic (though more complex) program that fully
looked and felt like a radio... things like:
1) you tune up and down the "band" and you hear everyone's tones moving up
and down with you.
2) If there are mulltiple signals in a "3 Khz bandwidh of each other, you
hear them all (at their own tone) as you tune. An option would be selecting
a "500 Hz filter" and then only signals within +/- 200 Hz would be heard.
3) You establish contact only by tuning an audio signal in.. and only by
sending out "CQ"... Though I am sure that programmers cannot avoid the
temptation to provide a "who's on list".. But I would prefer that the list
only show their "virtual operating frequency" and the user has to virtually
tune him in and call him to establish the QSO.
One brute-force, but simple way to implemnt this in code would be to take a
10 KHz wide "virtual novice band" and feed it from a central WEB audio
server, 3 KHz at a time, but every 500 Hz! THat way, as the receiving
station "virtually tunes" the band, he is actually stepping through the 20
audio channels (all offset from each other by 500 Hz... but it "sounds
like" he is tuning a radio with 500 Hz steps.
Then the inbound part of this sesrver only has to do one thing, and that is
accept the digital keying from any and all players on their selected
virtual "frequency".
Of course, I imagine this is very inefficient since to make it sound like a
real rig, would need 100 Hz steps and 100 ausio streams for the 10 KHz
channel. ANd it does not scale well if the poplarity rises... SO I only
offered this example for ease of visualizing what is really needed. And
that is a comprehensive digital feed that can be very efficient and only
create the "sound" locally from all the digital data...
Or something like that...
Bob,
WB4APR
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Message: 17
Date: Mon, 10 Jul 2006 11:36:27 -0500
From: "John Habbinga" <kc5zrq_at_gmail.com>
Subject: [aprssig] APRSTV Episode 2 - OpenTracker Assembly
Episode 2 features Terry Bajuk, KE5BL, assembling an OpenTracker.
http://www.aprstv.com
--
John Habbinga, KC5ZRQ
Lubbock, Texas
http://find-you.com/cgi-bin/find.cgi?call=KC5ZRQ*
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Message: 18
Date: Mon, 10 Jul 2006 09:41:50 -0700
From: <scott_at_opentrac.org>
Subject: RE: [aprssig] APRSTV Episode 2 - OpenTracker Assembly
>Episode 2 features Terry Bajuk, KE5BL, assembling an OpenTracker.
And in only 8 minutes - that's about half my best time! =]
The kit shown is PCB revision 3. Revision 4 is currently shipping, so new
kits look a little different and have one easy-to-solder surface mount
part, but other than that they're pretty much the same.
Scott, N1VG
http://n1vg.net/opentracker
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Message: 19
Date: Mon, 10 Jul 2006 11:49:30 -0500
From: "John Habbinga" <kc5zrq_at_gmail.com>
Subject: Re: [aprssig] APRSTV Episode 2 - OpenTracker Assembly
The first video featured an OpenTracker Rev 2. You just couldn't see it
inside the payload container. OT is great for balloons because it sends
temperature data in addition to GPS position, course and bearing.
I'd like to see a video podcast of a unique application for the OpenTracker
or TinyTracker. Does anyone have any ideas, or better yet, has anyone
already implemented such a project and would like to share?
--
John Habbinga, KC5ZRQ
Lubbock, Texas
http://find-you.com/cgi-bin/find.cgi?call=KC5ZRQ*
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