Note
QST, Nov 1959, p. 109.
More info: QST, Nov 1960, p. 111.
QST, Mar 1962 p. 139. (specs)
The RME 6900 covered the 80–10 meter ham bands and also had a band at 10 MHz for WWV. It used a tee-notch filter and 57 kHz IF for selectivity. The 12-tube, double-conversion receiver included a crystal calibrator, a product detector, and fast-attack AVC circuit.
