Accession Number:

AD0494067

Title:

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

Descriptive Note:

Corporate Author:

AIRBORNE INSTRUMENTS LAB INC MINEOLA NY

Personal Author(s):

• Woodward, Joseph E.

Report Date:

1947-07-01

Pagination or Media Count:

40.0

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