the "nation's first high-fidelity (audio) receiver". Military and government production Production of radios for civilian use was suspended by US government order in April 1942. Reformed as the Philharmonic Radio Corporation, the company started producing military radio equipment, manufacturing the SSR-5A radio receiver during World War II for the US and Allied forces. Part of the SSTR-5 (Strategic Service Transmitter-Receiver) Radio Set, the set was developed late in the war, was considerably smaller than the SSTR-1, and was carried in a canvas shoulder bag. Components included the SSR-5 receiver and the SST-5 transmitter. The set was designed to be operated from battery power (the receiver uses 135V, 6V, and 1.5V). In addition to a standard model, both "A" and "B" variants were made. The SSR-5A receiver was made by Philharmonic. Philharmonic Radio also produced airport instrument landing systems for use in control tower communication with commercial and military airplanes. One of their largest installations was deployed at the New York Municipal Airport, now named the LaGuardia Airport. Fisher said "During the war, we were working on subcontracts for the Navy. We were turning out 'IFF' equipment, which is Identification, Friend or Foe. It was a transponder, so you could tell whether an aircraft was one of ours or one of theirs. You'd send out a beam, and you had to get a signal reply back. We also designed the first instrument landing system used at LaGuardia Airport for the Civil Aeronautics Administration in Washington. In 1943, we didn't have enough money to finance the contract work we were able to get, so the company was sold to American Type Founders, who needed an electronic division. I stayed on as president until 1945 but when the war was over I resigned and, taking certain key people with me, started Fisher Radio". Fisher Radio Fisher sold his interest in Philharmonic Radio and founded his second audio firm, Fisher Radio Company, which developed, manufactured and marketed high-performance audio products under the trade name "The Fisher". By the 1950s, the term receiver was used instead of radio for a unit that combined a tuner and an amplifier, but lacked speakers. In 1957, the Fisher Radio Company produced their first high fidelity FM/AM receiver, the monophonic 14-tube Fisher 500 (TA500). In 1958, H. H. Scott introduced the first true stereophonic receiver, which used a stereo multiplex decoder. Fisher followed with its $350 (), 22-tube, stereophonic