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ZL3AI > APRDIG 06.05.07 05:04l 274 Lines 9712 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 34 #27, 4/6
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Sent: 070506/0249Z @:ZL2BAU.#79.NZL.OC #:46486 [Waimate] $:10120-ZL3AI
From: ZL3AI@ZL2BAU.#79.NZL.OC
To : APRDIG@WW
Message: 20
Date: Thu, 26 Apr 2007 16:47:33 -0500
From: Jason Winningham <jdw_at_eng.uah.edu>
Subject: Re: [aprssig] lowest common denominator (was: Signal Locator WEB page)
On Apr 26, 2007, at 11:30 AM, Robert Bruninga wrote:
>Because the common denominator in APRS
That was my point presented in a backhanded way. APRS seems to be driven
by the lowest common denominator. Can't do X because the Kenwood can't
handle it. Can't do Y because UI-View won't support it. Can't do Z
because hams won't change their 20 year old digi hardware.
Net result IMO? APRS is isn't nearly as used and useful as it could be
because of the dead weight dragging it down. I find it rather
discouraging.
my rather cynical $0.02...
-Jason
kg4wsv
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Message: 21
Date: Thu, 26 Apr 2007 16:53:04 -0500 (GMT-05:00)
From: jdbandman_at_earthlink.net
Subject: RE: [aprssig] Broken digis (W0APR-3, for example)
You couldn't just send me a private email, Jerome?
How about this? I can just shut it down completely when I get back home
next week and then YOU can figure out how to fill the major hole it leaves
OR you can contact me directly and I'll CONSIDER working with your demands.
The TNC was updated over a year ago with the correct parms as supplied by
WB0TUE. I suspect that what you're looking at are embedded Beacon Texts and
NOT a matter of mis-programmed parameters!
Jim Duncan, KU0G
Sysop: W0APR-3
Any OTHER comments you wish to make from this point forward may be
forwarded directly to me and I'll TRY to work with you to make things suit
you!!!
SHEESH!!! And people wonder why I stay off the air?
------------------------------
Message: 22
Date: Thu, 26 Apr 2007 17:57:46 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Signal Locator WEB page
Well, here is the ideal PIC OMNI-DF project in my opinion:
1) an OMNI-DF-on-air request goes out by someone with jamming
2) The Request contains the jammed freq
3) The PIC tunes a D7 or D700 or any other radio to listen
4) The pic notes the signal strength (or none)
4) The pic responds with an OMIN-DF packet
The REQUESTOR now then has on his display (APRSdos, or XASTIR) the signal
reports he needs, and the display shows the overlapping OMNI-DF reports for
instant assessment. Done. But then who has all those cat-capable radios
to put around the county. Are there any cheap scanners that can be PIC
controlled?
Bob, WB4aPR
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Message: 23
Date: Thu, 26 Apr 2007 17:14:56 -0500
From: "Robbie, wa9inf" <mwrobertson_at_comcast.net>
Subject: Re: [aprssig] Signal Locator WEB page
Robert Bruninga wrote:
>>A few years ago, there was a UI-View add-on, DF Plot.
>>Any number of mobiles, with ordinary Fox Hunting
>>equipment, radio, directional antenna, and a knowledge
>>of "where" the hunter is, would report the bearing
>>from that spot to a central UI-View operator running
>>the DF Plot.
>>
>
>Does the Uiview DF-Plot add-on also do the basic APRS OMNI-DF
>overlaping Signal Strength contours?
No.. The reports use the great triangulation method, very simple to
understand and demostrate... The Fox is generally very close to the area of
where the bearings intersect..
>The technique noted above depends on properly equiped mobile DF
>units with lots of equipment. I basically gave up on that way
>back in the 1995 time frame, since we never had the equipment or
>the people when it was needed.
No it does not. The normal Fox hunting equipment consisting of a radio,
directional antenna, and of course an antenuator. Same equipment used by
several clubs around the Chicagoland area today!
The hunters only need a decent sense of direction, and be capable of
following simple directions from the UI-View station doing the plotting.
>So we added OMNI-Dfing to APRS in hope that APRS could
>concentrate on its knowledge of position of -everyone- and
>what-they-hear and Antenna-Height Range as a much more reliable
>come-as-you-are method of signal origination localization. Too
>bad it was not universally implemented in all APRS clients so
>that we could be doing this at the push of a button within
>seconds of hearing a request for signal info.. :-(
If someone pops up and asks for signal info and bearings because of a
jammer or whatever, it is a matter of a few calls to either base
stations or other hams to get bearings and go where the crosshairs say
the Fox is. An object is placed at the spot by the client software for
other "mappers" to visualize, then it is just the normal "close in
sniffers" to finish it up..
>Uiview doesn't even provide the fundamental antenna height and
>coverage info without people loading an add-on. And without
>being able to see instantly what approximate area coverage each
>home station has, then it is hopeless to make any sense out of
>Uiview stations.
Sorry to hear you consistantly "bash" another client package the way you
have over the years! A shame on you Bob.
>Checking the DC/Balto area and 235 stations on the air, only 5
>Uiview stations are transmitting their PHG data. The other 60
>it is impossible to tell if they have a good station/antenna
>hearing out to 50 miles, or hearing out to 1 mile using a rubber
>duck in the basement. They all look the same.
>And even if these people did want to make an OMNI DF report,
>Uiview without the add-on has no input box for making the report
>and no PHG data on which to base it.
I think APRSdos is the only APRS program that uses Omni DF, and whenever I
look at a map of 640x480, I have a hard time understanding anything, it
seems the graphics are hard to see now..
>So that is why APRS as a group still cannot do simple signal
>localizing which can work so well and is so easy to do. That
>is why I give up and ask that at least someone implemnet it in a
>browser application so that we can really nail these signals as
>it would be so easy to do... Surely someone might be looking
>for a neat project that will revolutionize HAM radio Dfing...
I find it hard to conceive interest in a web page of some df'ing in another
part of the country which would probably be woefully out of date, even if I
could participate, :-)
Sorry Bob, the more you complain about UI-View, the more I like it... :-)
Robbie
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Message: 24
Date: Thu, 26 Apr 2007 18:50:51 -0400
From: John <johnk.mchugh_at_att.net>
Subject: Re: [aprssig] APRS Coverage in Key West
Bob is basically correct. If you use w,w,w,w2-2 that should get you to
the KD4BBM-6 digi (at 1600' in Homestead, FL ) which is setup in the new
style, then KO4E will Igate you
John
--
John Mc Hugh, K4AG
Coordinator for Amateur Radio
National Hurricane Center, WX4NHC
Home page:- http://www.wx4nhc.org
Robert Bruninga wrote:
>>I'll be traveling down to Key West next month...
>>Looking at the current IS stream I'm not seeing any
>>digipeaters or anything down there.
>
>I think it has a WIDE,WIDE,WIDE,WIDE system because the TNC's at
>remote WX stations are acting as the digis, and to upgrade to
>New-N would require new hardware. If they simply made the old
>TNC's WIDE1-1 only, then they would me minimally New-N
>compatible, but only for 1 hop.
>
>Travelers, then, only going one hop will not meet a lot of new
>folks.
>
>Their primary mission is to get the WX data to the Hurricane
>Center in Miami, so there has not been a lot of incentive to
>upgrade. But for disaster response, I would think that
>upgrading to the higher network efficiency of the New-N system
>could be justified for incoming first responders with APRS....
>
>Fortunately, running W,W,W,W on a linear string of digis in such
>a sparse area does not have the disadvantages of dupe
>multiplication that it has in 2dimensional systems elsewhere.
>SO maybe try W,W,W once you get south of Miami. I hope the rest
>of Miami northward is New-N, so that a W,W,W mobile doesn't
>trash up the Miami area too...
>
>Kibitzing out-of-area and could be sticking foot in mouth..
>
>Bob
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[duplicate]
------------------------------
Message: 26
Date: Fri, 27 Apr 2007 09:36:51 +0200
From: "Jan T. Pharo" <la2bba_at_jpharo.net>
Subject: Re: [aprssig] Broken digis (W0APR-3, for example)
Charles Doughtie <n5exy_at_yahoo.com>, Thu, 26 Apr 2007 14:16:48 -0700
(PDT):
>Question:
>
>Kenwood MCP-D700 software,
>APRS Menu 1,
>UIDIGI default is relay, with digipeater checked.
>
>Is this correct or obsolete?
In North America: obsolete.
The programming of the defaults in TM-D700 is older than the "new
paradigm" now partially in use in North America.
For other parts of the world, the D700 defaults may be quite all
right. It differs from country to country.
--
73 de Jan, LA2BBA
Hvaler, Norway
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Message: 27
Date: Fri, 27 Apr 2007 06:34:30 -0700 (PDT)
From: "Curt, WE7U" <archer_at_eskimo.com>
Subject: Re: [aprssig] Signal Locator WEB page
On Thu, 26 Apr 2007, Robbie, wa9inf wrote:
>I think APRSdos is the only APRS program that uses Omni DF, and whenever
>I look at a map of 640x480, I have a hard time understanding anything,
>it seems the graphics are hard to see now..
So run an Xastir station in 1600x1200 and call it good. With whatever
detail of maps you feel like bringing up, either local or internet-based.
Yea, we implemented Omni-DF'ing as well.
--
Curt, WE7U. APRS Client Comparisons: 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!"
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