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Since these were kits though, build quality was highly variable and dependent on the assembler's experience.Pilot's magazine "Radio Design" was always including updates along with suggestions for improving performance, consequently "Super-Wasp" receivers are sometimes found today having modifications or non-original parts.However, patience will be rewarded and it is fun to use a 1929 battery-operated receiver to monitor one of the many AM ham nets on 80 meters, especially when running the audio to a vintage horn speaker - talk about "broadcast quality audio" - well, 1929 style anyway! The tubes used were a type 24A cathode and screen grid tube for the RF amplifier, a cathode type 27 for the regenerative detector and two 27s for the AF amplifier.All of the tubes operated on 2.5vac at 7 amps for the heaters and the K-111 power pack supplied all of the A and B voltages required.The "Wasp" was designed by Robert Kruse and Milton B. The plug-in coils selected the tuning ranges that covered 500 meters to 17 meters or about 600kc up to 17.6mc.A complete coil set featured five coils each with color-coded handles for identification.Pilot also stipulated that only their own Pilotron tubes would perform correctly in the A. "Super-Wasp." Pilot plug-in coils are used for five tuning ranges covering 600kc up to 21.5mc.Shown to the left of the K-115 is the K-120 Audio Booster Unit, another Pilot module (though it is not called "Redi-Blox") for builders, that could be used if loud speaker volume was desired.
Around the time that the "Super-Wasp" was introduced, Pilot changed the name of the company to "Pilot Radio & Tube Corporation" (April, 1929.) "Super-Wasp" receivers were quite popular and sometimes were found in ham shacks of the late twenties and early thirties.The lower right-hand switch was wired back to the K-111 to provide an "on-off" switch at the receiver.