Total posts : 45366
Don’t waste time with a C.Crane. They have a stubby antenna that is not suitable for penetrating walls or reaching more than 10-feet. Get a Wholehouse 2.0, which has instructions for adding a 1/4 wave antenna tuned to the exact frequency. Also, there is a hidden switch under a round sticker in the battery compartment that boosts the power in case the low setting is not enough.
Just a friendly reminder to unlicensed operators wishing to comply with FCC 15.239 — the combination of transmitter power output plus transmit antenna configuration used in this application is unimportant.
The only requirement given in FCC 15.239 is that the field intensity radiated by an unlicensed system in the FM broadcast band cannot exceed 250 uV/m at a distance of 3 meters in any direction from the transmit antenna.