8 Jul
2013
8 Jul
'13
3:56 p.m.
What I meant was to give an example of an "outbound traffic" application
since inbound traffic is controversial. You are of course right, that
upstream connections from the individual remote nodes are lower
frequency applications, but when aggregating towards the central
repository, the data volumes build up. I guess there must be other
outbound traffic applications of a similar nature where amateurs can be
useful, e.g densifiction of the grids of websdr, wspr, radio telescopes, etc
And after all, to allow both in and outbound traffic applications
between radioamateurs over the world is just a matter of putting proper
authentication and authorization mechanisms in place, right?.
I guess Echolink has accomplished that in a sense already although their
method is a bit too manual.
The academic world has accomplished this via grids, science gateways,
certification and Identity provider authourities, etc. Like eduroam,
edugain, etc.
Would that be a way to go?
On 07/08/2013 10:17 PM, Michael E. Fox - N6MEF wrote:
(Please trim inclusions from previous messages)
_______________________________________________
Bjorn,
Same problem, at least here in the States. If I use ham frequencies to
transmit the data to a site that has Internet access, then that's fine. The
public access wouldn't use the ham frequencies. But we can't allow the
public to access the systems across amateur frequencies. That's not allowed
by our FCC rules.
Also, as you mention, I would think that collecting environmental monitoring
telemetry is a fairly low-bandwidth activity and the locations are usually
not places where you could or would want to put up a tower and dish, etc.
for clear line-of-site in the GHz range. I'm guessing that a lower power
VHF solution that's much more forgiving of line-of-site issues, much less
visually intrusive, and would probably make more sense for that application.
This discussion started with someone suggesting the use of the higher bands
to get higher bandwidths so we could drive more usage with better
applications. I'm all for it. But I'm hoping we can come up with what
those applications are.
Michael
N6MEF
-----Original Message-----
From: Bjorn Pehrson [mailto:bpehrson@kth.se]
Sent: Monday, July 08, 2013 12:58 PM
To: AMPRNet working group; Michael E. Fox - N6MEF
Subject: Re: [44net] Use of higher bands
An application that is useful and worthhile (and allowed everywhere, I
guess), besides emergency situations when everything is allowed, is
environment monitoring. Collecting data that are made publicly available for
anyone to use. Important but not that much data. Upstream connections from
remotely located sensor networks.
Bjorn/SA0BXI
On 07/08/2013 09:40 PM, Michael E. Fox - N6MEF wrote:
(Please trim inclusions from previous messages)
_______________________________________________
Right. But if I use ham frequencies, I still have problem #1 that I
mentioned, which is that I can't freely communicate with anyone other
than a local ham who has also installed the same custom stuff. And
that population is very, VERY small. See:
Part 97.109(e)
Part 97.115
Part 97.219
So that rules out pretty much all inbound traffic over amateur
frequencies from all 3rd parties and, to the usual extent, outbound
traffic to some 3rd parties -- those in countries where we don't have
the right agreements in place.
So, what applications can I run over ham frequencies?
Can I create an email gateway that automatically forwards inbound
email from the Internet over ham frequencies? No. (That's why WL2K
has the limitations is has.) Can I put up a web server that forwards
inbound traffic from the Internet over ham frequencies? No.
..., etc., etc.
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