Note
QST, Dec 1933, p. 81.
QST, May 1934, p. 119. (called the model 9, but is actually the 9D)
QST, Oct 1934, p. 101.
Also see QST, May 1935, pp. 21-28.
Also see QST, Jun 1935, p. 91.
When Radio Manufacturing Engineers of Peoria, Illinois introduced the RME-9 in late 1933, it created a benchmark for pre-war communication receivers. If RME was not the first to incorporate any one of the benchmark features in a receiver, the company led the pack by presenting all of them in one box.
At least within QST, the model 9 was only ever shown from the back. No illustration of the front panel has been found as of this writing. Only a handful of RME-9s were made, with most of them going to the Press Wireless company before a new set, christened the RME-9D, arrived.
Added to the older model's nine-tube, band-switching circuit and internal AC supply were a second airplane-type dial and signal-level meter. Other new features included a front-panel peaking control for the RF and mixer stages, as well as a cast-aluminum chassis. Both the RME-9 and 9D had an IF crystal filter. The five-band tuning range went from 0.55 to 23 MHz. An optional model in the 9D series dropped broadcast-band coverage in favor of extending the tuning range up to 32 MHz.
9D Standard: 550 kHz to 23 MHz
9D Special: 1450 kHz to 32 MHz
