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PA2AGA > HDDIG 24.07.00 03:22l 224 Lines 7374 Bytes #-9305 (0) @ EU
BID : HD_2000_196C
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Subj: HamDigitalDigest 2000/196C
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Sent: 000722/1406Z @:PI8HGL.#ZH1.NLD.EU #:63157 [Den Haag] FBB $:HD_2000_196C
From: PA2AGA@PI8HGL.#ZH1.NLD.EU
To : HDDIG@EU
Date: Sat, 22 Jul 00 14:54:32 MET
Message-Id: <hd_2000_196C>
From: pa2aga@pe1mvx.ampr.org
To: hd_broadcast@pa2aga.ampr.org
X-BBS-Msg-Type: B
> link local radio nets anywhere on the globe. It is possible to telnet
> into Internet APRS servers and see hundreds of stations from all over
> the world live. Everyone connected can feed their locally heard
> packets into the APRS server system and everyone everywhere can see
> them.
>
> * Messages -- Messages are two-way messages with acknowledgement. All
> incoming messages alert the user on arrival and are held on the
> message screen until killed.
>
> * Bulletins and Announcements -- Bulletins and announcements are
> addressed to everyone. Bulletins are sent a few times an hour for a
> few hours, and announcements less frequently but possibly over a
> few days.
>
> * Fixed Station Tracking -- In addition to automatically tracking mobile
> GPS/LORAN-equipped stations, APRS also tracks from manual reports or
> grid squares.
>
> * Objects -- Any user can place an APRS Object on his own map, and
> within seconds that object appears on all other station displays. This
> is particularly useful for tracking assets or people that are not
> equipped with trackers. Only one packet operator needs to know where
> things are (e.g. by monitoring voice traffic), and as he maintains the
> positions and movements of assets on his screen, all other stations
> running APRS will display the same information.
>
>
> --------------------------------
> Where to hear APRS transmissions
> --------------------------------
> One of the biggest benefits of APRS is that it only uses one frequency
> to work on -- everyone shares it. In North America, this is 144.390 MHz.
> In the United Kingdom and several European countries it is 144.800 MHz.
>
>
> ---------------------------------
> Where to find out more about APRS
> ---------------------------------
> These web sites have a wealth of information on APRS, including
> documentation and sources of software:
>
> http://www.tapr.org
> http://www.aprs.org
> http://www.dididahdahdidit.com
> http://www.packetradio.org.uk
>
> The full APRS Protocol Specification is at:
> http://www.tapr.org/tapr/html/Faprswg.html
>
>
> 29 February 2000
>
>
>
> 73
> Ian, G3NRW
> Technical Editor, APRS Protocol Specification
>
> --
> +--------------------------------------------------------------------+
> | APRS on 144.800 [IO91SX] ~55km/35 miles NNW of London |
> | email: g3nrw@tapr.org |
> | |
> | APRS PROTOCOL SPEC: http://www.tapr.org/tapr/html/Faprswg.html |
> | <APRSdec> APRS DECODER: http://www.tapr.org/~g3nrw |
> | Mic-Encoder Software: http://www.tapr.org/~g3nrw |
> +--------------------------------------------------------------------+
------------------------------
Date: Fri, 21 Jul 2000 07:53:20 +0100
From: Ian Wade <Ian.Wade@care4free.net>
Subject: Getting back into packet -- need info please
In article <8l70d8$ei3$1@news.panix.com>, Joseph R. Skoler
<joseph@compuhelp.com> writes
>
>Sounds very cool.
>
>Thanks for the info.
>
>How would I broadcast/transmit local weather?
Hi Joseph. Most (maybe all) of the APRS client software packages let you
interface a weather station to them. The software then formats the raw
output from the WX station and transmits it as APRS-conformant packets.
You can also set up WX "objects" (for example, to show the position of a
storm), and other people will see the objects on their maps.
73
Ian, G3NRW
Technical Editor, APRS Protocol Specification
--
+--------------------------------------------------------------------+
| APRS on 144.800 [IO91SX] ~55km/35 miles NNW of London |
| email: g3nrw@tapr.org |
| |
| APRS PROTOCOL SPEC: http://www.tapr.org/tapr/html/Faprswg.html |
| <APRSdec> APRS DECODER: http://www.tapr.org/~g3nrw |
| Mic-Encoder Software: http://www.tapr.org/~g3nrw |
+--------------------------------------------------------------------+
------------------------------
Date: Fri, 21 Jul 2000 08:50:56 GMT
From: hamish@cloud.net.au (Hamish Moffatt VK3SB)
Subject: Getting back into packet -- need info please
Joseph R. Skoler <joseph@compuhelp.com> wrote:
> Well, looks like it's a consensus: Packet did not bloom into the wonderful
> thing I had hoped it would.
> Thanks everyone for the feedback.
Well, packet just needed an application which was unique, somewhere
where it excelled. Email is much better on the Internet; packet can't
compete. Packet will only be better for mobile applications where
wireline isn't available.
APRS is a good example of such an application. Not that current
APRS software is state of the art, but it's a start.
Hamish
--
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>
------------------------------
Date: Fri, 21 Jul 2000 04:19:45 GMT
From: "George , W5YR" <w5yr@att.net>
Subject: Help with PSK-31
Nope, old-fashioned ohmic all the way. No ground loops, no feedback, no
60-Hz "hum" - it just works! Comes, I guess, from matching a good
computer to a great radio. R-F output envelope is a textbook two-tone.
IMD measured in the lab for the system is -35 to -38 db on 20 meters.
--
72/73, George W5YR - the Yellow Rose of Texas
Fairview, TX 30 mi NE Dallas in Collin county QRP-L 1373
Amateur Radio W5YR, in the 54th year and it just keeps getting better!
R/C since 1964 - AMA 98452 RVing since 1972 Kachina #91900556
(12/99)
Rob Janssen wrote:
>
> George , W5YR <w5yr@att.net> wrote:
> >Got you beat, Hamish. Mine consists of two shielded cables! The Kachina
> >505DSP was made for PSK!
>
> Does it have galvanic isolation at the computer connector, like Hamish'
> interface has? (transformers, opto coupler)
>
> Rob
------------------------------
Date: Fri, 21 Jul 2000 08:45:13 GMT
From: hamish@cloud.net.au (Hamish Moffatt VK3SB)
Subject: Help with PSK-31
George , W5YR <w5yr@att.net> wrote:
> Got you beat, Hamish. Mine consists of two shielded cables! The Kachina
> 505DSP was made for PSK!
You're right George, I can't beat that. With the Kachina,
there's really no excuse for the RigBlaster! Sounds nice.
Hamish
--
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>
------------------------------
Date: Thu, 20 Jul 2000 17:52:40 GMT
From: ntfs@iafdw.com
Subject: MTX-800 Value
I have come upon 2 Motorola 16 channel mtx-800 with
batteries and chargers. These are in like new shape and I'm
wondering what they are worth. Any Ideas?
Thanks .
Bob
------------------------------
Date: 20 Jul 2000 20:35:46 GMT
From: chramade@aol.com (ChRAMADE)
Subject: PSK31 Program
Visit my web page at
http://members.aol.com/chramade/dxpsk.htm
You will have the oppotunity to download my new psk31 program FREE
Enjoy!!!
------------------------------
End of Ham-Digital Digest V2000 #196
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