Total posts : 45366
Interesting beginning of what will probably be an interesting thread.
From a technical perspective a “little” cheating doesn’t go a long way just as going 5 over on a freeway only gets you there 5 minutes earlier after an hour drive. The field strength is proportional to the square root of the power so one would predict that the linear range increase by doubling the power is 1.4 or 40%. But since the area covered is proportional to the square of the linear range, the area is proportional to the power. Given a uniform density of listeners per area then the number of potential listeners is proportional to power. Now, how much “cheating” on the power is one willing to risk based on the increase in possible listeners?
Another approach is that anything which increases the field strength while operating legally under 15.219 is a plus. Double the FS and your potential listeners are quadrupled. How is this done?
One way, as mentioned, is to increase the efficiency of the transmitter since the input power is limited to 100 mW, but the output power is input power X efficiency. The maximum efficiency I measured on my Ramsey AM-25 is 30% which is very low for a class C RF amplifier. Room for improvement there, and if I recall Ermi Roos posted quite a bit on this topic some time back. A search may be helpful.
The other way is to improve the power radiated by the antenna system by minimizing the ground RF resistance and/or raising the radiation resistance (which is a function of the antenna length). A ground mounted vertical antenna with a wired ground radial system is probably the best the average hobbyist can do, yet advanced theory and experimentation may yield gains over the conventional wisdom.
So, though I have avoided comment on the morality or legality of “cheating” I have tried to put it into perspective regarding the gains vs. the risks as perceived by the operator. I have no comment on how much over the limit one can operate.