rf_engineer
join:2003-08-04
USA
| reply to wondering pawn
Re: BPL just won't die: another vendor trying BPL
said by wondering pawn :
Why did the Hamster`s group allows NEXTEL to interfere with Emergency Communications since mid-1990`s ... if it was vocally fighting against BPL for fear it will interfere with 911 system... is this a bias campaign ????
How ironic you're promoting BPL and then posting about the Nextel interference fiasco. If anything, this illustrates what happens when outdated regulations are not changed to reflect current spectrum usage. BPL is essentially using outdated regulations in FCC Part 15 that allowed intermittent narrowband radio frequency energy emitters so that small unlicensed consumer devices could exist like kid's walkie-talkies, garage door openers, cordless phones, etc. BPL takes this little regulation and totally exceeds its intent, putting a 7x24 hour broadband signal on a distributed antenna system covering a large geographical area.
The difference between the Nextel fiasco and BPL is the FCC was told BPL would be a problem. Companies like Motorola who have wireless experience knew it as well and changed their design accordingly to include component-based filters. Current Communications for the most part avoids HF radio spectrum. Companies like Amperion and Ambient with software-based notches but still attempting to use HF spectrum are at a disadvantage. Companies demonstrating to utilities that they can prevent interference issues and not sweep them under the rug will be getting the contracts from utilities.
BPL could interfere with public safety frequencies in VHF bands where some BPL systems are moving, but organizations like APCO have been rather quiet. BPL is going to interfere with whatever services are on the frequencies it uses due its unshielded medium, the power line. This is why BPL should have never gotten off the drawing board. But I digress.
It's funny how you bash "hamsters" for not speaking up about the Nextel issue which the public safety community was vocal about, yet we're portrayed as villians when we're vocal about our own spectrum and let others defend theirs. The "bias campaign" is all yours. |
