The Hammarlund Series 200 Super-Pro receivers were manufactured from 1939 through 1945, with many thousand delivered to the military during World War II. The three basic models (there were additional variants and modifications) were:
When the receivers were first introduced, they cost about $330 US. Even equipped with Jensen 10" or 12" dynamic speakers and power supplies the price was "only" $465 to $507 -- a pretty penny in its day. In fact, using Westegg.com's Inflation Calculator, the price of this receiver in 1939 would be $4300 to $6600 in 2005 dollars, fully the equivalent of today's top of the line receivers.
Hammarlund didn't make each and every component of the SP-200's. The twenty six companies that supplied parts for the radio are listed here
Thanks to David Prince, VK4KDP, we have a photo and schematic of the Eclipse Radio A.M.R. 200 Receiver Unit, U.S. Signal Corps SC-CD-220-43. Photos of this radio, plus other U.S. and British designs that were made in Australia during WWII, can be found on his .
The schematic is also very interesting, showing not only a different tube line up (with glass envelope, vice metal tubes) but a single-ended audio output amplifier 6V6G instead of push-pull 6F6's. Any additional information on this or other internationally produced Super-Pros would be greatly appreciated.
