where to buy old 1978 rca color remote controle that would be run off of

[tigermusicgirl_08]

ultrasonic not infered? i have a 1978 RCA color trak and i want to get a remote for it but it dont take infered it uses ultrasonic and ive looked for one but no luck and i was wandering if a website or place would sell old or new ones
thanks
cr