Note
QST, Feb 1979 p. 143.
QST, Jan 1980, p. 100.
SST Electronics made a line of simple antenna tuners. The T-4 “Ultra Tuner Deluxe” had a switch to select from two coax antenna feedlines, a random wire, or tuner bypass. It had a built-in SWR bridge and meter. The T-4 was rated at 300 watts and worked from 1.8–30 MHz.