[RFI] HomePlug Experience?

[Roger (K8RI)]

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 at arrl.org
>
> ________________________________
>
> From: K1TTT [mailto:K1TTT at ARRL.NET]
> Sent: Fri 7/16/2010 7:29 AM
> To: rfi at 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 at 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 at ifwtech.co.uk]
>> Sent: Friday, July 16, 2010 07:09
>> To: rfi at 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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