How to Replace the Rotary Encoder on a Car Radio : 5 Steps (with Pictures) - Instructables
GSM full-rate Audio Encoder - GNU Radio
HD Broadcast Encoder MPEG-2/H.264 EX2-2200 - TV products | AxelTech
AXEL RDS-E5 ENCODER - TEKO BROADCAST
BR Encoder
FMUSER 1000Watt 1KW FM Broadcast Transmitter With Digital RDS Encoder Radio Data System Encoder For FM Radio Station-50w-1000w-FMUSER FM/TV Broadcast One-Stop Supplier
RDS Encoder P232U | 305broadcast
High Quality MPX Stereo Encoder Circuit Module for PLL Fm - Etsy
5 – Encoder/decoder for the radio transmitter/receiver | Download Scientific Diagram
Fmuser 100w/150w 150watts Radio Broadcast Fm Transmitter + Rds Encoder With Ta Mpx In Rds Out - Radio & Tv Broadcasting Equipment - AliExpress
On the Minitools store you can buy car stereos rotary encoders for repairing the car radio knob for several cars makes and models.