[BC] LPAM (was Smallest AM Radiator/TIS)

[Richard Fry]

>> Rule 15.209  does not define anything about tx power or antenna
>> system gain/efficiency, only that the peak field strength in
>> microvolts/meter when measured 30 meters away from the
>> antenna cannot exceed [24,000/Operating Freq in  kilohertz].

Phil Alexander responded:
>I had to read that one myself. ...Operation on 600 kHz is permitted
> twice the FI as on 1200 kHz while, in fact, it should be the opposite
> to account for propagation attenuation which is far greater at
>1200 kHz than at 600 kHz.
____________

However the useful fields permitted under 15.209 in the AM broadcast band 
are gone long before ground conductivity plays a significant part in them, 
no matter what the frequency.

RF