Note
QST, Sep 1935, p. 5.
QST, Oct 1935, p. 5.
References
Technical Description. Radio Craft, Jan 1936, p. 417.
Review: Radio, Jan 1936, p. 68.
Note: Neither of the examples shown here are exactly like any shown in Dachis' book. These are closer to the S(X)-9s than any other unit shown in his book, so presumably they are some variants of the -9 series.
Note: In the initial QST adverting (QST, Sep 1935, p. 6, et al) the unit is referred to as the Super 7. In subsequent issues of the magazine it was correctly identified as the Super Skyrider.
Superheterodyne circuit. The first Hallicrafters radio produced in significant quantities. Early versions had the company logo engraved on the upper right corner of the rig. Later versions had no logo. The "SX" version includes a crystal filter.
Features include, a built-in power supply and speaker, five bands, genuine band switching instead of plug-in coils, a "full seven inches of bandspread" on 40 meters, a preselector, two-stage dual air tuned IF transformers, sensitivity better than 3 µV for 50 mW output ("hear CW signals at a fraction of a millivolt,") audio output of 3 watts maximum, and transmit-receive switch.
Promotion of the S-9 made a big issue of the fact that it used all-metal tubes--which were all the rage beginning in 1935.
Note: Advertising copy refers to the S-9 as a nine tube radio, but that does not include the rectifier (a 5Z4, in this case). In these early days of radio, rectifier tubes often were omitted from descriptions, which instead emphasized the tubes that actually got the signal through from one end to the other.
Coverage: 540 kHz to 42 MHz
Built-in speaker
BFO
IF: 465 kHz
Power: 120 VAC
Tubes: (1) 5Z4, (2) 6F6, (3) 6K7, (1) 6F5, (1) 6H6, (1) 6C5, (1) 6L7
References
Review. Radio News, Oct 1935, p. 203.
Review. Radio News, Nov 1935, p. 285.
Discussion. Radio News, Jan 1936, p. 399.
