Total posts : 45366
FWIW: The Whole House FM Transmitter 3.0 puts out 2 mW into a rubber duck and that over powered transmitter got certified. Its overpowered yes but too more than 75% of the population running FM Transmiters for Part 15 broadcasting aka Christmas Light Shows use them daily. Keep in mind though gray area if your away from a metro area and don’t lifve in a police state like Connecticut, New York, Washington DC, NJ, Mass your are probably set. Otherwise your better off running something like a Scoche for FM and save your money for a lot o these FM transmitters are over the limit. My SainSonic goes a little 1,000 feet to a car Radio. But when the ground is Wet it goes further. There is another transmitter you can set to 1 mW into a rubber duck and claims 150-200 Feet to a portable Radio. Its the Signstek CZE-T200 though not certified if you keep it at 1mW you are under the Certified Overpowered transmitter running 2mW and places like Frankinmuth, Michigan runs that 24/7 365 for more than 12 yrs of my knowledge. No NOUO was issued. I could hear the signal ¼ mile 5 by 5. I can almost safely claim few part 15 FM Transmitters are 100% at spec.