On 10/6/2010 10:07 PM, Hare, Ed W1RFI wrote:
> 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.
When I get my 4CX3000A7 version of the 2-meter amp in the handbook
finished, maybe we can give it a real test.<:-))
I do know the CAT5e and CAT6 do radiate making the use of 2-meter HTs
problematic within about 75 feet of the cable runs.
73
Roger (K8RI)
>
> 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/>
> 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
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