Note
CQ, Nov 1962, p. 21.
QST, Dec 1962, p. 163.
QST, Dec 1963, p. 136.
QST, Mar 1964, p. 130.
QST, Apr 1965 p. 136.
QST, Nov 1966, p. 158.
Tecraft made their Criterion series of converters for the 50, 144, and 220 MHz bands. They offered the operator management of input and output signal levels and the converter's gain could also be controlled by the receiver's AVC. The six meter model shown here could use any IF from 6-30.5 MHz. The converters had sockets for two heterodyne crystals. The power supply was built in.
References
Review: CQ, Oct 1964, p. 40.
