Note
Kit or wired.
QST, Nov 1957, p. 143.
QST, Mar 1960, p. 133.
The AT-4 Globe Matcher Senior handled up to 600 watts RF. It covered 80–10 meters and had coax input and a fixed-link balanced output. Separate balanced-line connections were used for 80/40 meters and 20–10 meters. A bypass switch allowed the use of coax input and output. The AT-4 had a built-in SWR bridge and meter.