Germanium Transistor Receiver

Reflex receivers the reflex receiver uses the same transistors to amplify the rf and the audio independently effectively doubling the transistor count. Back in the day germanium transistors often had.

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Subjectively the sound of germanium offers a smoother more ear pleasing.

Germanium transistor receiver. The junctions of silicon transitions works at a voltage approximately 05 v and the sensitivity of the receiver with a silicon transistor is much lower. Early solid state ham project receivers from the 1957 1967 era. It is essential that the antenna be nice and long and that an earth ground be used or a cold water pipe.

I dont have a schematic i found one but too blurry to read. Germanium is a chemical element with symbol ge and atomic number 32 thats used as a semiconductor in transistors and diodes popping up in a few classic effects like the early period arbiter fuzz face the storied dallas rangemaster and the maestro fuzz tone. The dimensions of this design are only 80x35x80.

Being germanium transistors i anticipated having some bad ones. In the circuit is used the variable capacitors with the silver plated coils it allows to obtain a better quality factor q and the high frequency germanium transistor af239. I give them all a test and i have three that are bad.

Could one of you kind fellows tell me witch ones they are. Should build at least one regenerative radio. The germanium diode in this circuit is for testing the reception of the tuned.

One whisker called the emitter acts in a manner comparable to the grid of a triode vacuum tube. The transistor is a germanium crystal device. This circuit is the one that i designed and made when i was a little whippersnapper.

Everyone should build at least one regenerative radio receiver. The germanium transistors is used because its junctions works at a low voltage about 015 volts this allows to detect very weak signals. The one transistor am radio receiver is something all whippersnappers try out when starting out on the royal road to radio building.

The driver and the two audio out. It differs from the familiar crystal diode of which the 1n34 is a well known example chiefly in that the transistor has two cat whiskers instead of one. Meanwhile its neat to just leave the receiver on all the time with no battery and it sounds pretty nice through a radio shack amplified speaker.

Reflex designs were born in an era when transistors cost several dollars each and pressing them into double duty was worth some effort. Id like to try it with a germanium transistor but i dont have any yet. The fm crystal radio called bida 1.

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