Futaba 9CA/9CH PCM/PPM 9CF-FM Transmitter On Ebay
https://www.ebay.com/itm/Futaba-9CA-9CH-PCM-PPM-9CF-FM-Transmitter/193785481063?
https://www.ebay.com/itm/Futaba-9CA-9CH-PCM-PPM-9CF-FM-Transmitter/193785481063?