This was the first true mobile HF radio that dose all bands HF It came out in 1993 but was so good they sold it new until a few years ago ( 2009 ). This radio is not so good in the mobile it has nothing to get rid of engine noise. But use it as a base station and you can't do better. It recieves very well and pulls weak stations out of the noise' but works even better with a good noise canceling speaker. It transmits very well, it works with any mike so getting a good modulation is easy depending on your mike. Works well for DX with Astatic D104 base mike.
After having the 6M TS-60 for a number of years, and loving that rig, I didn't really need the TS-50, but wanted it to compliment the TS-60, and to have a good back-up rig. AES had one more AT-50 complimenting auto tuner for this rig, so I bought that out. The only thing that was wrong with the rig when I'd gotten it was a dead Li Memory battery. That was easy enough to replace. Also, I've opened up the rig for 60M operation, which it does well. However, the AT-50 auto tuner will not do 60M. (The auto tuner in my TS-2000X doesn't either.) So, I use a manual tuner for that band. I agree that the NB (Noise Blanker), isn't that effective. I never really did understand what that AIP feature was for on RX, but I used it like it was a -10dB attenuator. RX itself is pretty good. It's got better ears than the TS-2000 and my Icom IC-7000, and way better than the Yaesu FT-857D. AM TX on this rig is quite good, and I've received compliments on it. And that's on the stock mic. What's strange it you have to drop Mic Gain to Low for that. (Same with the TS-60.) Only gripes? TX power levels are 10W, 50W, and 100W, non-continuous. Not very effective NB. And not really great for portability since this rig draws over 1A on RX. However, this rig will work in -10deg below Zero F. One big plus is all FM features are included for 10M FM repeater work, splits and CTCSS. Not many HF rigs in the early 1990's had this. 100 Memory channels is nice as well. It's a keeper.