Kenwood TS-520S reviews
A classic and still a good performer
Still a wonderful SSB rig with great xmit audio. Lacking modern basic features such as pass band tuning and IF shift, and of course, it has to be retuned every time one switches bands, or moves significantly in one. Receiver is reasonably sensitive, although easy to overload. Adjacent signal rejection is not that great either. Makes a decent CW rig, but not a great one - lots of relay clattering going on there and the "semi break in" is not impressive. Still, a fun rig for everyday QSOs and ragchews. Mates really well to the classic D-104 mic.