Total posts : 45366
This may sound silly but if you going to continue to use field strength you would have to use an affordable Radio and the makers would always have to manufacture that some model Radio until the end of time. For example the FCC uses a Grundig 450 to state that a compliant part 15 transmitter under the BETS rules would go 1,000 feet. So if your transmitter went 1,000 feet and 7 inches your illegal. Or say it went 1,010 feet your illegal is more like it. However the Radio would have to be an affordable Radio for all. A Sony Boombox for $50 could be the official Radio for measuring part 15 compliance for the average joe. I get why they use field strength instead of power for FM but what we have to figure out is a simple solution and that would be 100 uVm @ 30 meters. At least it will give far more range for the hobbyist to work with which could get up to 1,000 feet.