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PA2AGA > HDDIG 26.07.00 02:43l 213 Lines 7544 Bytes #-9302 (0) @ EU
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Date: Tue, 25 Jul 00 17:09:15 MET
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Ham-Digital Digest Mon, 24 Jul 2000 Volume 2000 : Issue 199
Today's Topics:
56Kb Packet Radio Modem (7 msgs)
Can Micor handle Alphanumeric paging?
Forget HF & CW - Think Digital (3 msgs)
Kenwood TS870 and psk31
Need KPC3 6.0 Firmware
RigBlaster (16 msgs)
RITTY is back-4.0 (new) !!!
RTTY & Digital HF
starting RITTY (4.0) (2 msgs)
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:2000/199
----------------------------------------------------------------------
Date: Sun, 23 Jul 2000 07:51:34 -0500
From: "Steve Sampson" <ssampson@usa-site.net>
Subject: 56Kb Packet Radio Modem
At the distance you will get 10 Mbps to work reliably, you could
use a Part-15 Spread Spectrum radio.
There's really only one 56 kbps design available. It is marketed by
a TNC company in Florida. They sell half the product. The other half
has to be found at computer swap meets. The first half costs about
$1300 (TNC/DMA, Modem, and antenna).
"David Findlay" wrote
> Could someone point me to a good design for a 56Kb Packet Radio Modem on the
> web? I have decided to wait till later to get 10Mb, so I am going to try and
> get the network going on 56k.
------------------------------
Date: Sun, 23 Jul 2000 12:58:58 GMT
From: Rich@iwantnospam.org (Rich)
Subject: 56Kb Packet Radio Modem
On Sun, 23 Jul 2000 07:51:34 -0500, Steve Sampson <ssampson@usa-site.net>
wrote:
>At the distance you will get 10 Mbps to work reliably, you could
>use a Part-15 Spread Spectrum radio.
>
>There's really only one 56 kbps design available. It is marketed by
>a TNC company in Florida. They sell half the product. The other half
>has to be found at computer swap meets. The first half costs about
>$1300 (TNC/DMA, Modem, and antenna).
Really? My WA4DSY stations cost a total of about $600 each -
for the modem, 219 Mhz transverter, antenna, power supply, and
SCC cards - all new equipment.
Where in the world do you get a cost of $1300.00?
- Rich
------------------------------
Date: Sun, 23 Jul 2000 08:26:22 -0500
From: "Steve Sampson" <ssampson@usa-site.net>
Subject: 56Kb Packet Radio Modem
$600 x 2, OK I was off $100, heck of a deal then.
You need two.
"Rich" wrote
> >There's really only one 56 kbps design available. It is marketed by
> >a TNC company in Florida. They sell half the product. The other half
> >has to be found at computer swap meets. The first half costs about
> >$1300 (TNC/DMA, Modem, and antenna).
>
> Really? My WA4DSY stations cost a total of about $600 each -
> for the modem, 219 Mhz transverter, antenna, power supply, and
> SCC cards - all new equipment.
>
> Where in the world do you get a cost of $1300.00?
------------------------------
Date: Sun, 23 Jul 2000 22:21:44 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: 56Kb Packet Radio Modem
"Rich" <Rich@iwantnospam.org> wrote in message
news:slrn8nlqsj.2hk.Rich@zippy.aa2ys.ampr.org...
> On Sun, 23 Jul 2000 07:51:34 -0500, Steve Sampson <ssampson@usa-site.net>
wrote:
> >At the distance you will get 10 Mbps to work reliably, you could
> >use a Part-15 Spread Spectrum radio.
> >
> >There's really only one 56 kbps design available. It is marketed by
> >a TNC company in Florida. They sell half the product. The other half
> >has to be found at computer swap meets. The first half costs about
> >$1300 (TNC/DMA, Modem, and antenna).
>
> Really? My WA4DSY stations cost a total of about $600 each -
> for the modem, 219 Mhz transverter, antenna, power supply, and
> SCC cards - all new equipment.
>
> Where in the world do you get a cost of $1300.00?
>
> - Rich
Um ... Rich ... you need TWO of 'em.
Maybe that "excess" $100 might buy the coax?
--
... Hank
http://horedson.home.att.net
------------------------------
Date: Mon, 24 Jul 2000 08:36:54 +1000
From: "David Findlay" <nedz@bigpond.com>
Subject: 56Kb Packet Radio Modem
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?
David Findlay
------------------------------
Date: Sun, 23 Jul 2000 23:43:13 GMT
From: Rich@iwantnospam.org (Rich)
Subject: 56Kb Packet Radio Modem
On Sun, 23 Jul 2000 22:21:44 GMT, Hank Oredson <horedson@att.net> wrote:
>Um ... Rich ... you need TWO of 'em.
>
Yes, you do. But Steve said, "[ Paccomm ] sells half the product.
The other half has to be found at computer swap meets. The first
half costs about $1300.00 (TNC/DMA, Modem, and antenna)." If he
actually meant the equipment for an *entire* link, then he
is using a new and bizarre definition of "half."
- Rich
------------------------------
Date: Mon, 24 Jul 2000 03:03:20 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: 56Kb Packet Radio Modem
Also check out the SYMEK packet controllers:
http://www.symek.com/tnc-g/main.htm
--
... Hank
http://horedson.home.att.net
"David Findlay" <nedz@bigpond.com> wrote in message
news:EkKe5.17671$c5.46842@newsfeeds.bigpond.com...
> 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
To be continued in digest: hd_2000_199B
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