[aprssig] The East will Rise again! (at 9600?) VHF-YES!
bruninga at usna.edu
Fri May 6 19:00:40 CDT 2016
I looked around at 900 MHz and 6m, but then realized that the whole point
was to build a 9600 baud network that could be used by EVERYONE with
existing APRS integrated radios that have built in 9600 baud TNC’s.
It wouldn’t make sense to build a backbone that required all new radios and
equipment to use. We’d have no users in an emergency…
SO now I am pretty much sold on the idea of 2 meters. Its that or UHF, but
UHF between omnis takes almost 9 dB more link power/budget.
I also did the math for solar powered nodes and it is on my new page:
Looks like a 20Watt solar panel and 7 Ahr gelcel is a start using the
KPC-9612 and one of the $150 digital radios from argent…
Photos on the page…
*From:* Robert Bruninga [mailto:bruninga at usna.edu]
*Sent:* Thursday, May 05, 2016 1:29 PM
*To:* aprssig at tapr.org
*Cc:* bruninga at usna.edu
*Subject:* The East will Rise again! (at 9600?)
SAVE your KPC9612’s Boys, the East will RISE AGAIN!
The Golden Packet team is toying with the idea of making our annual
Appalachian mountain digipeater string from Maine to Georgia permament and
making it a 9600 baud network for emergency and ham radio disaster response
and play. We already have 3 of the 14 sites with approval for
Lets face it, traditional packet networks are dead and although APRS is
alive and well, it is specific and only operates at 1200 baud. Although
all fully integrated APRS radios work perfectly well at 1200 and 9600 baud,
all of the existing APRS network is 1200 because all the digipeaters (not
integrated APRS radios) operate at 1200 and the majority of all home APRS
stations and IGates use TNC’s that operate at 1200. A huge legacy.
Besides, going to 9600 only barely doubles APRS speeds while degrading link
So, since we have already shown for 6 years now, that this long 2000 mile
linear chain of mountains and valleys can support a 2000 mile network with
only 14 digis, why not establish a long haul 9600 baud Node chain from
Maine to Georgia which could be a significant boost to Packet radio
emergency operations. The network would not operate as APRS digipeaters but
as KAnodes. As we all knew back in the 1990’s link-by-link acknowledgment
was vastly superior to end-to-end.
We already have three sites in MD, and PA … But we need more than hikers,
to get us access to some existing ham radio maintained sites. We do NOT
want nodes to branch off down into the plains. These nodes would bog down
the network. No, the main backbone would be to support emergency
operations with beams that can point up to the mountains to pass traffic.
So, we are splashing this onto the APRSSIG to see if people have SITE
access and/or have unused 9600 baud KPC-9612’s to step up and lets see what
we got. Also will need a freq. I’m thinking 145.01 but every time I think
of it, people give feedback, and I LOSE or forget the feedback as to what
existing systems are already on 145.01, such as DX clusters, etc…
Every day we get MORE AND MORE addicted to our wireless infrastructure,
which we all know, will be hard to access in a real emergency. We need to
keep the Ham radio Plan-B alive…
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