§  15.219   Operation in the band 510-1705 kHz.

   (a) The total input power to the final radio frequency stage (exclusive
   of filament or heater power) shall not exceed 100 milliwatts.

   (b) The total length of the transmission line, antenna and ground lead
   (if used) shall not exceed 3 meters.

   (c) All emissions below 510 kHz or above 1705 kHz shall be attenuated
   at least 20 dB below the level of the unmodulated carrier.
   Determination of compliance with the 20 dB attenuation specification
   may be based on measurements at the intentional radiator's antenna
   output terminal unless the intentional radiator uses a permanently
   attached antenna, in which case compliance shall be deomonstrated by
   measuring the radiated emissions.