[NLRS] six meter au. & Broadband over Power Lines (BPL)
[email protected]
[email protected]
Thu, 1 May 2003 21:45:45 EDT
Barry, its my understanding that our high voltage power lines have carried
control & communication LF signals between substations, etc., for years, but
that the current discussion (no pun intended) is about HF/VHF signals on our
low voltage distribution feeds that run around our neighborhood. Isn't this
a bit of apples vs oranges ? I agree that our society is based on reliable
electricity, and I do appreciate how reliable our power system is, but is
that related to HF/VHF signals on our low voltage distribution feeds ?
Maybe I misunderstand .... that is very possible.
73, Jon
W0ZQ
In a message dated 5/1/03 7:19:12 PM Central Daylight Time, [email protected]
writes:
> Soap Box time ....Sorry!
>
> I am one of those power company guys! WE (I) am interested in (dominated
> by) reliability ! Life as you know it does not exist without a reliable
> electric system.
>
> I support(ed) the hobby interests in the debate but not at the expense of
> the electric system!
>
> As much as you might find it hard to believe this PLC stuff is a critical
> system in the operation of the Electric system in the USA and Canada. Most
> electric companies (not my QRL) cannot afford microwave or fibre optic
> communications systems. They are investor owned utilities and their power
> systems are smaller low cost operations. PLC they can afford and it can be
> (if properly engineered) be very reliable....very cost effective! Take
> part
> of it away....for a hobby pursuit !?
>
> Ham Radio is only a hobby !
>
> From my company's perspective I could have accomodated a Ham allocation
> without much of a problem but at some cost . We (Electric Systems
> operationally )are risk adverse....it MUST be reliable....it must work!
>
> I understand both sides...other companies many have been overly
> protective.
> And why not!? They don't have the clout ($) in Washington (although 9-11
> has changed that regrettfully (without $)) and cannot afford the other
> options.
>
> You can poo poo the stance of the electric utilities (and I understand....I
> was disappointed) but please try to understand. Your government
> does....the
> electric system is the heart of your economy...without it your world stops!
>
> Best 73
>
> Barry VE4MA
> ----- Original Message -----
> From: "Dr. Gerald N. Johnson, electrical engineer" <[email protected]>
> To: "Barry Malowanchuk" <[email protected]>
> Cc: "Matt Arthur" <[email protected]>; <[email protected]>
> Sent: Thursday, May 01, 2003 9:04 AM
> Subject: Re: [NLRS] six meter au. &Broadband over Power Lines (BPL)
>
>
> >Power companies that use VLF (80 to 350 KHz) PLC on long lines are the
> >loudest objectors to the FCC allocation a US ham band at VLF. The power
> >companies believe they are radiating and that hams running "high" power
> >to minuscule antennas (maybe half a kw gets a watt or two ERP) will
> >overcome the direct connections to the power lines that the PLC uses.
> >
> >73, Jerry, K0CQ
> >
> >--
> >Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
> >Reproduction by permission only.
>
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>
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