JR 27Mhz AM Receiver Crystal Channel 4 CH4 27.145 JRPXAR4

27Mhz AM Universal Transmitter Crystal 27.145 Mhz Channel 4 CH4 Yellow

Airtronics 27Mhz FM RX CRYSTAL CH#6

Vintage Airtronics Receiver 92721 27MHz AM 2-Channel Rx Sanwa

27Mhz AM Universal Transmitter Crystal 27.145mhz Channel 4 CH4 Yellow

Traxxas 27MHz AM RX Crystal (Channel 6/Blue - 27.255)

27Mhz AM Universal Transmitter Crystal 27.145mhz Channel 4 CH4 Yellow