Accession Number:

ADA064377

Title:

VHF Data Modem/Baseband Data Signal Converter.

Descriptive Note:

Final rept. 30 Sept 76-28 Apr 78,

Corporate Author:

SIGNATRON INC LEXINGTON MASS

Report Date:

1978-05-01

Pagination or Media Count:

156.0

Abstract:

A full duplex data modem, used for transmitting digital data over tactical VHF FM radios, has been designed and built. The modem has two operating modes. In the quasi-analog mode it can transmit at 75, 150, 300, 600, 1200, 2400, and 4800 bps, using binary FSK, MSK, and four-level FSK. In the X-mode it can transmit at 300, 600, 1200, 2400, 4800, 9600, and 16000 bps, using Manchester, conditioned, diphase, pair-selected ternary, delay modulation, bipolar, and twinned binary codes. This report contains the theory of operation, implementation, and test data on two units. Author

Subject Categories:

  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE