The Sierra is a good trainer, and it is not a very old design (probably came out in the late 80's or early 90's) so I would bet that the radio is narrow band. Probably one of those 'Attack' radios. As long as it was narrow band, I would pay $150 for the deal.

But, be aware that the 'Attack' 4 channel radios did NOT have a connection for a buddy box. So, if you were learning on it, you would have to pass the transmitter back and forth between student and instructor.

If you get it, come down to Louisville and I'll teach you! [8D]