Radios with only Two Transistors

     The invasion of Japanese radios was not entirely welcome in certain trade circles in the USA.   Import duty prices began to rise; they were based, oddly enough, on the number of transistors in a radio.

     Some Japanese manufacturers worked around this by offering "boy's radios,"  built with an ingenious circuit using only two transistors.   One transistor  amplifies the incoming signal, the other drives the speaker.  Peformance suffered in this design: Only the most powerful or closest stations can be heard on the two radios pictured here.   Both radios have an external antenna jack.  A long antenna wire works wonders.

     Though these radios were promoted as "boy's radios," their build quality is not that different from six, eight , or fourteen transistor radios.

 

 Back to Radios

 Tom Polk's Home Page