Accession Number : AD0494067

Title :   MULTIPLE OPERATION OF RDZ OR TDZ EQUIPMENTS WITH A SINGLE ANTENNA,

Corporate Author : AIRBORNE INSTRUMENTS LAB INC MINEOLA NY

Personal Author(s) : Woodward, Joseph E.

Report Date : JUL 1947

Pagination or Media Count : 40

Abstract : A unit has been designed and tested that will permit the operation of one, two, three, or four TDZ or RDZ equipments from a single antenna. When the equipments are operating with a frequency separation of at least 6 mc, the unit has an insertion loss below 3 db, averaging between 1.0 and 1.5 db. When two transmitters are operating with 4-mc separation, a cross-modulation level better than 30 db below 100% modulation is maintained. Losses of more than 10 db may be encountered when two equipments are operating with a 0.8-mc separation. A complete unit was constructed, with provision for automatic tuning that may be controlled from the associated equipment. (Author)

Descriptors :   (*ANTENNAS, ELECTROMAGNETIC COMPATIBILITY), (*ANTENNA COMPONENTS, COUPLING CIRCUITS), VOICE COMMUNICATIONS, RADIO TRANSMITTERS, TUNING DEVICES, DELAY LINES, ULTRAHIGH FREQUENCY, RADIO RECEIVERS, MULTIPLE OPERATION, SHIP ANTENNAS.

Subject Categories : Electrical and Electronic Equipment
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE