My son stuffed pennies in the current one and I want to buy a stock receiver to replace it. Mazda wants around $1k for it so I'm going to buy used from Ebay. My only question is that I see a few for sale but they advertise "khz". What is this and how do I know what I need.
One says 200 khz while the other says 50 khz.
One says 200 khz while the other says 50 khz.
