[Yaesu] FT-900?AT vs. AT/CAT-What's the difference?

2002年5月05日 15:40:25 -0400

My FT900 s/n 4H020308:
Carton says FT-900/AT, then in bullet points below includes "CAT System"
I see both AT and AT CAT models advertised, with a considerable 
difference in prices. What's the difference and what do I have?
I'd like to trade it for an FT-817 if anyone's interested. Mine is 
like new, in the original cartons and was completely gone over by 
Yaesu last summer, with zero hours since then, and probably only 50 
hours from when it was new. Includes new separation kit.
Harry N2ERN