I think it will, Gene. If I recall, the Vanguard was the newer technology, entry level radio.

What happens is that the buddy box, in this case, does not mirror any of the settings on the main transmitter, meaning, any expo, rates, or anything else will not relate to the buddy box. Only the four channel operation works from one to the other. At least, that's how it worked with mine when I buddy boxed it with an RD6000.

CGr.