Any battery ultrasonic Zenith remote should work.
The one Jon shows is probably the one that
came with it. They sold one model above that that had
full RAT & auto on/off. That uses one with a full keyboard
& other buttons. Doug may have the remote cross book.
If you can get the 124-### part number it will help.
The number is in the battery box.
73 Zeno
73 Zeno