When they are actually transmitting data, you should be able to hear them
pretty well outside the HF ham bands.
73,
Ed Hare, W1RFI
ARRL Laboratory Manager
225 Main St
Newington, CT 06111
Tel: 860-594-0318
Email: W1RFI@arrl.org
________________________________
From: K1TTT [mailto:K1TTT@ARRL.NET]
Sent: Thu 10/7/2010 6:45 PM
To: Hare, Ed W1RFI; rfi@contesting.com
Subject: RE: [RFI] HomePlug Experience?
The ones I have are PlugLink 9650 which they say tops at 85mbps. I don't
hear anything from it on the ham bands. I am hoping to get rid of them
anyway, the only reason for them is that the range of the plc built into the
pv system inverters is too short to allow the house end of that to be near
the router.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net <http://www.k1ttt.net/>
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> -----Original Message-----
> From: Hare, Ed W1RFI [mailto:w1rfi@arrl.org]
> Sent: Thursday, October 07, 2010 02:08
> To: rfi@contesting.com
> Subject: Re: [RFI] HomePlug Experience?
>
> It's hard to believe that it goes back over 10 years now, but the HomePlug
> protocols do not use the Amateur bands, with the exception of the 5 MHz
> band, which was allocated after the protocols were written. I worked with
> HomePlug engineers to do testing of the protocol with and without the
> notches. HomePlug operates at 4-20 MHz. The HomePlug AV spec runs to 28
> MHz and there is a new HomePlug Gigabit spec that runs to 200 MHz.
>
> In the Gigabit spec, the 6- and 2-meter bands aren't filtered, but the
> levels are about 30 dB lower than the HF operating level, so the noise
> levels are correspondingly lower. I think, however, that VHF interference
> is possible. I just haven't had the time to go get a pair of the Gigabit
> modems and do some measurements and testing. Repors are most welcome.
>
> But the spectral masks that HomePlug has applied to the Amateur bands is
> successful. There are about 20 million HomePlug modems sold in the US to
> date, and to date, ARRL has received zero reports of interference to the
> Amateur bands traced to HomePlug products.
>
> See:
>
> http;//p1k.arrl.org/~ehare/bpl/HomePlug_ARRL.pdf
> .
>
>
> 73,
> Ed Hare, W1RFI
> ARRL Laboratory Manager
> 225 Main St
> Newington, CT 06111
> Tel: 860-594-0318
> Email: W1RFI@arrl.org
>
> ________________________________
>
> From: K1TTT [mailto:K1TTT@ARRL.NET]
> Sent: Fri 7/16/2010 7:29 AM
> To: rfi@contesting.com
> Subject: Re: [RFI] HomePlug Experience?
>
>
>
> I was afraid of that also when I put in a pv system. The pv inverters
> talk
> to a monitoring box using 144khz plc which is very narrow band and no
> problem. But because of the limited range the monitoring box had to be
> too
> far from my router, so the company sent me a pair of homeplug bridges.
> They
> are supposed to be 4-20MHz, but I can't hear them. Perhaps this is only
> because of the relatively low data rate and intermittent transfers
> actually
> used, but they don't seem to be a problem here.
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt@arrl.net
> web: http://www.k1ttt.net <http://www.k1ttt.net/> <http://www.k1ttt.net/>
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>
>
> > -----Original Message-----
> > From: Ian White GM3SEK [mailto:gm3sek@ifwtech.co.uk]
> > Sent: Friday, July 16, 2010 07:09
> > To: rfi@contesting.com
> > Subject: Re: [RFI] HomePlug Experience?
> >
> > Eric Rosenberg wrote:
> > > It looks like I'll need HomePlug to get from my router in the
> basement
> > >to the second floor, as no wireless devices penetrate this 70-year old
> > >plaster and lathing house.
> > >
> > >I presently have five Ethernet runs in the basement and two to the main
> > >floor above the shack. They don't appear to be noisy or have an impact
> > >on my urban station.
> > >
> > >Do any of you have experience with HomePlug in/near the shack?
> > >
> > >I'd like to know about your experience!
> >
> > http://www.ukqrm.org/
> >
> > Welcome to HF Hell.
> >
> >
> > --
> >
> > 73 from Ian GM3SEK
> > http://www.ifwtech.co.uk/g3sek
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
>
>
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
>
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|