- Characteristic Data Chart - 1941 vacuum tube data
- Catalog DL-Q-7100 Radio and Television Tube Data, 1957
- RA-250 250 Watt AM Broadcast Transmitter. Contributed by Scott Todd. Scanned by Harold Hallikainen. File Size: 14MB
RA-1000 1kW AM Broadcast Transmitter. Scanned by Jason Horvath. 16MB. Still need schematic.
- Schematic contributed by John C. Aegerter
- Photo contributed by John C. Aegerter
- Another scanned manual
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