That’s what I’m looking for, Jay.
When I say “Master”, I mean the one functioning as the backhaul to my network.
One master on the pole (in the case of MuniWiFi enhancement) (or in the
rafters of the covered dock in a marina application) and a number of slaves on
the boats or in housed, all on the same secondary. Our marinas have
transformers on shore and 60-70 boat slips on the single phase secondary. I
could do the whole dock with 2 masters.
Of course to have a n Ethernet manageable one would be the cat’s meow. Then we
could authorize the subscribers individually, like a CATV CMTS.
But since our network is run as a hotspot the size of half a state, they still
have to get past the captive portal anyway so that’s why Manageable is just
something really nice but not required.
The WiFi works pretty well in the boats, but some of these yachts have
basements that the WiFi doesn’t get into or the boats are so big (120-150ft)
the coverage is poor.
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf
Of CBB - Jay Fuller
Sent: Sunday, December 29, 2013 2:22 PM
To: WISPA General List
Subject: Re: [WISPA] Ethernet over power lines (not the failedpower companyBPL
trials)
I'll look them up next week - yes - had as many as four connected. There was
no master unit, it was all one big bridge, like having them all on a switch
- Original Message -
From: ralph mailto:ralphli...@bsrg.org
To: 'WISPA General List' mailto:wireless@wispa.org
Sent: Sunday, December 29, 2013 8:53 AM
Subject: Re: [WISPA] Ethernet over power lines (not the failedpower companyBPL
trials)
Thanks Jay.
Did you ever try to get more than one remote to connect to a master without
doing anything special?
That’s my ultimate goal. And do you remember the model unit you used?
From: wireless-boun...@wispa.org mailto:wireless-boun...@wispa.org
[mailto:wireless-boun...@wispa.org] On Behalf Of CBB - Jay Fuller
Sent: Sunday, December 29, 2013 1:43 AM
To: WISPA General List
Subject: Re: [WISPA] Ethernet over power lines (not the failed power companyBPL
trials)
Ralph - pretty sure we used the netgear model units and they did not require
anything more than plug and pray. Worked great.
- Original Message -
From: ralph mailto:ralphli...@bsrg.org
To: 'WISPA General List' mailto:wireless@wispa.org
Sent: Saturday, December 28, 2013 8:39 PM
Subject: Re: [WISPA] Ethernet over power lines (not the failed power companyBPL
trials)
Then you may not be talking about what I am talking about.
I think it may have been Duke Power who did some of the 1st generation
trial/pilots I speak of. It was quite a while ago, It was too expensive,
didn’t work well, and, well, yes it certainly did interfere with licensed users
(Ham Radio and International broadcasters). It is a part 15 service. It
transmits on unshielded wires on approximately 2-30 MHz. This covers almost all
low frequency Ham bands, International broadcast, and CB. Here is the database
of the “trials” http://p1k.arrl.org/~ehare/bpl/ex2.html#Cities
http://p1k.arrl.org/~ehare/bpl/ex2.html#Cities It is way out of date, but
there is tons of interesting information here. Unfortunately a great many of
the links are broken.
The two most spectacular failures were those of IBEC, (the company I believe
Clay is describing) who folded January of 2012. They cited the power line
disruption from the Southeastern Tornadoes as the reason. These are the same
tornadoes that tore up several of us here on this list- especially in Alabama!
IBEC was competing with WISPS and all the while causing illegal interference to
FCC licensed users.
http://www.arrl.org/news/arrl-shows-ibec-bpl-systems-are-interfering-violating-fcc-rules
http://www.arrl.org/news/arrl-shows-ibec-bpl-systems-are-interfering-violating-fcc-rules
The second was the City of Manassas, VA, who started their trial way back in
2002. The “plug was pulled” on their BPL in July of 2010.
A little Google-ing will find you demonstrations of how horrible the
interference was.
The part 15 rules concerning BPL are very interesting: 47 C.F.R. §15.615
http://www.law.cornell.edu/cfr/text/47/15.615
The official database of BPL systems that operators are, per the FCC, supposed
to list their systems in at least 30 days before beginning operations is at
http://www.bpldatabase.org/listing/ IBEC repeatedly violated that FCC rule
The most recent technology (HomePlug) incorporates protection
(filtering/notching) for the Amateur bands and is a much more friendly
neighbor.
Speaking of your Radio Shack devices (and I had a lot of them too) – they were
based on the BSR X10 technology. The 80’s stuff was pretty poor. Later on it
evolved to be a lot better and even worked bidirectionally, which really helped
the reliability. Many home automation companies sprang up to utilize the
technology
