Tuesday, August 21, 2007

Ham radio operators okay with DirecTV BPL

Note: the HomePlug standard can also be used to get broadband service into older tenement buildings via when muni wifi can't go through the walls.

From the American Radio Relay League:

According to the August 15 edition of The Wall Street Journal, "Satellite-television provider DirecTV announced a wholesale agreement today with Current Group to provide high-speed Internet service over electric-power lines," otherwise known as broadband over powerlines (BPL). "Broadband over power line is a new technology that allows customers to plug a modem device the size of a cell phone into an electric outlet and connect a cable from their computer for Internet access that is capable of speeds that are faster than some popular Internet plans from cable and phone companies. Current is building out broadband networks in Cincinnati and Dallas-Fort Worth and is in talks with a number of utilities around the world about a commercial rollout," the Journal said.

ARRL CEO David Sumner, K1ZZ, said "There is no reason to panic [over this decision]. ARRL's only concern about BPL is the interference potential. In that regard, the approach that Current has taken to date -- limiting its use of the medium-voltage lines to 30-50 MHz and using the HomePlug standard to avoid the HF ham bands on the low-voltage drop -- has been satisfactory. If the FCC mandated what Current has been doing, we would be quite happy."

Sumner continued: "We can be glad that DirecTV chose to align itself with a BPL company that has taken the interference problem seriously and has a good track record of avoiding interference in the amateur bands."

ARRL Laboratory Manager Ed Hare, W1RFI, commented, "ARRL and Current have communicated regularly over the past few years. Current has been an early leader in carefully choosing its design to avoid interference to Amateur Radio. They don't operate below 30 MHz on overhead lines at all, and use HomePlug technology, which doesn't use the ham bands, in customers' premises. To date, ARRL has no Amateur Radio interference reports involving Current or HomePlug equipment."

1 Comment:

Scott Fillmer said...

Thanks for posting on the BLP information. The interference issue is a big concern to amateur radio operators.

73, KI4WLR
http://www.ki4wlr.com

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