said by TKJunkMail :

On FM frequencies, these devices are limited to an effective service range of approximately 200 feet (61 meters).

said by Donna Summers :

What page is that on ? On page 24 there is a formula for power. It is P=0.3E squared. Looks like he can use even more power than he has now.

UNLICENSED OPERATION

The next four sections cover the permitted forms of unlicensed operation in the AM band (535 to 1705 kHz) and FM band (88 to 108 MHz), and explain the penalties which may be assessed against those forms of unlicensed operation which do not fall within the permitted forms of unlicensed operation.

PART 15 DEVICES

Unlicensed operation on the AM and FM radio broadcast bands is permitted for some extremely low powered devices covered under Part 15 of the FCC's rules. On FM frequencies, these devices are limited to an effective service range of approximately 200 feet (61 meters).