Note
QST, Dec 1952, p. 111.
QST, Apr 1953, p. 111. (MT-5A)
Walter Ashe catalog, 1954, p. 11
QST, Mar 1954, p. 97. (MT-5B)
Improvements in the "B" version include a new "exclusive"meter with a D'Arsonval movement, a new crystal oscillator circuit using a 6CL6, and a VFO-XTAL switch and VFO connector now on the front panel.