I think this is your knob. http://i452.photobucket.com/albums/q...psa2f9e557.jpg

Talon lists one on their RCA parts page:

http://www.talonix.com/shop/rcaparts.htm

112727 VHF Channel Selector Knob

Kevin, That picture is very close to what I have. Mine is like that, but with a black center that has a white stripe in a circle and a protruding outer ring (part that is broken off). I'll post a pic of it as soon as I can, the internet at home sucks right now. Might have to go sit at Micky D's for a while:D. However, I like this knob better. I wouldn't be upset about putting this one on instead. It has a nice polished brass insert instead of the black with stripe if I remember right.

?

http://i452.photobucket.com/albums/q...ps44136326.jpg

That looks like the one!

I'm not sure if it's correct, though. The RCA knob directory lists the first number for your model. I suppose they likely made a few running changes during production. I think I'd be happy just to have a working knob. :D