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PA2AGA > HDDIG 26.07.00 01:57l 192 Lines 7307 Bytes #-9303 (0) @ EU
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To : HDDIG@EU
Date: Tue, 25 Jul 00 17:08:44 MET
Message-Id: <hd_2000_200A>
From: pa2aga@pe1mvx.ampr.org
To: hd_broadcast@pa2aga.ampr.org
X-BBS-Msg-Type: B
Ham-Digital Digest Tue, 25 Jul 2000 Volume 2000 : Issue 200
Today's Topics:
56Kb Packet Radio Modem (7 msgs)
Digipan help
Forget HF & CW - Think Digital (2 msgs)
Next Zakanaka beta release???
RigBlaster (18 msgs)
Rigblaster with Yaesu FT-840 Help Needed
RTTY & Digital HF
Software ???? (2 msgs)
starting RITTY (4.0) (2 msgs)
WinWarbler - a new PSK31 program
Send Replies or notes for publication to: <Ham-Digital@UCSD.Edu>
Send subscription requests to: <Ham-Digital-REQUEST@UCSD.Edu>
Problems you can't solve otherwise to brian@ucsd.edu.
Archives of past issues of the Ham-Digital Digest are available
(by FTP only) from ftp.UCSD.Edu in directory "mailarchives/ham-digital".
We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party. Your mileage may vary. So there.
Loop-Detect: Ham-Digital:2000/200
----------------------------------------------------------------------
Date: Mon, 24 Jul 2000 06:24:18 GMT
From: nomail@rob.knoware.nl (Rob Janssen)
Subject: 56Kb Packet Radio Modem
David Findlay <nedz@bigpond.com> wrote:
>Thanks for this info, I am probably going to build a WA4DSY 56kb radio
>modem, unless I can find a better design. Anyone know of what sort of range
>you can get? I need around about 50km. All stations will be withing a square
>surounding a digipeater, at a maximum of 25km away. They need to be able
>each others transmissions as it will be using an ethernet topology. However
>what I was thinking of is that if one station is in a hollow and can't see
>everyone's transmissions, the digipeater could act as relay. The digipeater
>would know that the station was there and could pick up certain people's
>transmissions, and automaticaly store and forward a transmission.
>Then to get to another grid area, the station would send to the digipeater,
>which would then forward the packet to the next digipeater, which would send
>it out on the frequency of that grid square. Basically the digipeaters would
>run router software. Could this system work?
Ten years ago we all thought it could. And technically it can. Especially
when you make sure it isn't all happening on a single frequency.
Your problems will not be technical, at least not when you build upon the
work that lots of others have done in this field.
When you don't have an infinite supply of money, that will be a problem.
Rob
--
+----------------------------------+--------------------------------------+
| Rob Janssen pe1chl@amsat.org | WWW: http://www.knoware.nl/users/rob |
| AMPRnet: rob@pe1chl.ampr.org | AX.25 BBS: PE1CHL@PI8WNO.#UTR.NLD.EU |
+----------------------------------+--------------------------------------+
------------------------------
Date: Tue, 25 Jul 2000 08:01:58 +1000
From: "David Findlay" <nedz@bigpond.com>
Subject: 56Kb Packet Radio Modem
> Ten years ago we all thought it could. And technically it can.
Especially
> when you make sure it isn't all happening on a single frequency.
> Your problems will not be technical, at least not when you build upon the
> work that lots of others have done in this field.
> When you don't have an infinite supply of money, that will be a problem.
I have a group of people interested in getting a network going for the sole
purpose of sharing weather data live, and mobile. We also have potential
funding, if we can show that it works. So because this network is being
designed by a group of people who all want the same thing out of it, we may
have a chance of succeeding.
David Findlay
------------------------------
Date: Mon, 24 Jul 2000 22:30:28 GMT
From: horseshoestew@my-deja.com
Subject: 56Kb Packet Radio Modem
In article <WV2f5.18365$c5.49354@newsfeeds.bigpond.com>,
"David Findlay" <nedz@bigpond.com> wrote:
> > Ten years ago we all thought it could. And technically it can.
> Especially
> > when you make sure it isn't all happening on a single frequency.
> > Your problems will not be technical, at least not when you build
upon the
> > work that lots of others have done in this field.
> > When you don't have an infinite supply of money, that will be a
problem.
>
> I have a group of people interested in getting a network going for
the sole
> purpose of sharing weather data live, and mobile. We also have
potential
> funding, if we can show that it works. So because this network is
being
> designed by a group of people who all want the same thing out of it,
we may
> have a chance of succeeding.
Why wouldn't you use a system based on part 15 devices, for crying out
loud? It is faster, cheaper, and proven. You are going to have enough
trouble getting your sites set up properly, without having to worry
about cobbling together a bunch of expensive and lower-performing
equipment.
> David Findlay
Stewart - N0MHS
--
Wireless High-Speed Networking Information:
http://www.geocities.com/SiliconValley/Monitor/2254/radio.html
Public Radio Services Information:
http://www.geocities.com/SiliconValley/Monitor/2254/radio2.html
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
Date: Tue, 25 Jul 2000 02:03:50 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: 56Kb Packet Radio Modem
<horseshoestew@my-deja.com> wrote in message
news:8lig25$dmg$1@nnrp1.deja.com...
> In article <WV2f5.18365$c5.49354@newsfeeds.bigpond.com>,
> "David Findlay" <nedz@bigpond.com> wrote:
> > > Ten years ago we all thought it could. And technically it can.
> > Especially
> > > when you make sure it isn't all happening on a single frequency.
> > > Your problems will not be technical, at least not when you build
> upon the
> > > work that lots of others have done in this field.
> > > When you don't have an infinite supply of money, that will be a
> problem.
> >
> > I have a group of people interested in getting a network going for
> the sole
> > purpose of sharing weather data live, and mobile. We also have
> potential
> > funding, if we can show that it works. So because this network is
> being
> > designed by a group of people who all want the same thing out of it,
> we may
> > have a chance of succeeding.
>
> Why wouldn't you use a system based on part 15 devices, for crying out
> loud? It is faster, cheaper, and proven. You are going to have enough
> trouble getting your sites set up properly, without having to worry
> about cobbling together a bunch of expensive and lower-performing
> equipment.
Ha ha ha! Har! Giggle.
So far reported into this newsgroup is exactly ONE link using
Part 15 devices. It spans a whole 5 miles. If anyone has had
better luck than that, they have not reported it.
You doing better? Tell us about it.
If you cannot recall what we are doing here in this part of the USA,
a perusal of past posts to this newsgroup will enlighten you.
To be continued in digest: hd_2000_200B
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