[TowerTalk] Legal Power measurement Discussion

[Joe Subich, W4TV]

 > And they don't mention ERP except for the new VLF.

Wrong. The criteria on 60 meters is expressed in ERP.  See 97.313(i):

> (i) No station may transmit with an effective radiated power (ERP)
> exceeding 100 W PEP on the 60 m band. For the purpose of computing
> ERP, the transmitter PEP will be multiplied by the antenna gain
> relative to a half-wave dipole antenna. A half-wave dipole antenna
> will be presumed to have a gain of 1 (0 dBd). Licensees using other
> antennas must maintain in their station records either the antenna
> manufacturer's data on the antenna gain or calculations of the
> antenna gain.

73,

    ... Joe, W4TV


On 9/26/2016 9:05 AM, Ed Sawyer wrote:
> Clearly, this is "settled science".  Power is measured at the final of the
> radio or amplifier, whichever is last.  1500W max PEP from the transmitter
> is clearly in the rules - as its quite clear how the FCC states ERP for
> other services.  And they don't mention ERP except for the new VLF.
>
>
>
> This dialog reminds me of the splitting hairs a decade ago of whether 1500W
> was "per antenna" in the contest rules and rules finally settled the issue
> by rewording that its 1500W total power - regardless of number or direction
> of antennas.
>
>
>
> Ed  N1UR
>
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