Total posts : 45366
mram1500, if you can certify by measurement that your field strength does not exceed the limits specified in part 15.209 then you are operating under that rule. You can run any power you want with any antenna you want as long as the field strength at 30 meters is legal.
For John, I think the FCC requirement for submission of manual is to insure compliance with the requirement that the manual includes the required statement regarding part 15 devices. If you know that they are evaluating the installation and operating instructions, I will be interested in knowing this.
I have stated before that the only defensible definition of the point of grounding is where the wire goes into the dirt. Ask an electrician where your home power system is grounded. Ask a radio engineer where his antenna is grounded. Ask an amateur radio operator where his station is grounded (mine is grounded at the electrical service entrance ground stake). Ask lightning where ground is…I don’t think it is the top of the tree that was struck.
More important to this post, ask yourself why the FCC would limit the ground length. My answer is that the ground lead above the dirt radiates a signal and the FCC knew this when they intended to limit the range of part 15 AM transmitters. Why then would they allow any ground scheme such as a 20 foot mast which increases the field over what they intended?
In summary, why do you think it is called ground?