Note
QST, Oct 1980, p. 136.
QST, Feb 1981, p. 114.
QST, Jul 1982, p. 141.
The MFJ model 260 dummy load used a 50 ohm, non-inductive resistor in its vented metal housing. It was rated at 300 watts for 30 seconds. The similar 262 dummy load had a capacity of 1 KW.