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Re: [Amps] Where is power measured ?

To: Jim Thomson <jim.thom@telus.net>
Subject: Re: [Amps] Where is power measured ?
From: Roger D Johnson <n1rj@roadrunner.com>
Date: Wed, 06 Apr 2011 08:38:09 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
On 4/6/2011 8:11 AM, Jim Thomson wrote:
> Someone mentioned that in the US, the power is measured at the back of the 
> amp.
> Your rules don't stipulate where it's actually measured.  Dave Leeson, and 
> other's,
> contacted FCC officials, and the FCC said it was reasonable to measure the 
> power at the
> load, IE: ant feed-point.  US broadcast TX are measured at the feed-point, or 
> close to it, not the
> output of the amp at base of tower.
>
FCC rules 97.313

(b) No station may transmit with a transmitter power exceeding 1.5 kW PEP

73, Roger


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