Elenco  FM Wireless Microphone Kit   SOLDERING REQUIRED Hone your DIY soldering techniques with Elenco' s FM Wireless Microphone Soldering Kit. Enjoy the pleasure of having assembled and soldered it yourself Learn all about microphones, audio amplifiers and RF oscillators Range up to 100 feet Transmit your voice to any FM radio Made in the United States Hone your DIY soldering techniques with Elenco's FM Wireless Microphone Soldering Kit. Enjoy the pleasure of having assembled and soldered it yourself Learn all about microphones, audio amplifiers and RF oscillators Range up to 100 feet Transmit your voice to any FM radio Made in the United States