Note
RBU-2 may not be the correct model number.
QST, Mar 1942, p. 16. (first seen here)
Radio Craft, Oct 1944, p. 10. (an ad for post-war use of panoramic reception)
Radio Craft, Aug 1946, p. 787. (available as war surplus)
Radio News, Aug 1946, p. 127. (available as war surplus)
Radio and Television News, Mar 1952, p. 120 (specs)
Max sweep width: 50 kHz
Input frequency: 400 kHz
Input impedance: 50 ohms
Sensitivity: 10 uV
Osc mean frequency: 625 kHz
Osc swing: ±25 kHz
IF frequency: 262 kHz
Sweep frequency: 30 Hz (adjustable)
Sweep wave form: linear saw tooth
Power: 115/230 VAC, 50–70 Hz
After the war, a version of this was released as the PCA-2 (T200), for amateur use.
References
Radio Craft, Jun 1945, p. 598. (a story on panoramic reception. features the unit shown in the Mar 1942 QST article, called the "Panoramoscope.")
QST, Mar 1942, p. 16. (In this article, two versions of a commercially made panadaptor as seen. Both are made by Panoramic, but model numbers are not provided)
Radio Craft, Jun 1945, p. 598. (a story on panoramic reception. features the unit shown in the Mar 1942 QST article, called the "Panoramoscope.")
Radio News, Aug 1945, p. 32. ("A Comparison of Visual and Oral Reception")
