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Tone-activated, remote, alert communication systemPocket sized transmitter, frequency modulated by crystal derived tones, with integral loop antenna provides police with easy operating alert signal communicator which uses patrol car radio to relay signal. Communication channels are time shared by several patrol units.
Document ID
19710000305
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Baker, C. D.
Couvillon, L. A.
Hubbard, W. P.
Kollar, F. J.
Postal, R. B.
Tegnelia, C. R.
Date Acquired
August 6, 2013
Publication Date
August 1, 1971
Subject Category
Electronic Systems
Report/Patent Number
NPO-11132
Report Number: NPO-11132
Accession Number
71B10307
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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