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Big-E Stereo Parabolic Microphone:
This device is a stereo amplifier for a high sensitivity stereo parabolic microphone. It can be used for listening to distant sounds. Typical parabolic microphones are monophonic, this unit
has a stereo audio path that helps produce more realistic sounding audio. The Big-E can be used with headphones or as an audio source for a stereo tape recorder or a PC sound card. This
circuit also works nicely as a remote stereo audio receiver for accompanying a video surveillance system. It is capable of operating on end of a four wire shielded cable that is more
than 100 feet long. For remote operation, a set of inexpensive amplified PC speakers can be connected to outputs for monitoring sound.... (added 6/06)
Heathkit A9C: Heath hi-fi amp model A9C (schematic added 11/06)
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