Accession Number:

AD0271853

Title:

A TWO-CHANNEL SET FOR HIGH-FREQUENCY COMMUNICATION USING ELECTRIC POWER LINES

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-01-22

Pagination or Media Count:

1.0

Abstract:

A description is given of two communication channels in one direction, a dispatch channel and an administrative channel. Often for administrative communication a second, high-frequency, channel along transmission lines is used. A system w s developed for modernizing the EPO-2 industrial single-channel apparatus into a twochannel device without increasing the cost appreciably. This modernization principle can also be used in other single-channel communication devices using electric power lines. The following standard units are added in the modernized EPO-2 communication set a differential unit with a 1-f transmission amplifier a mounting plate with a limiter, the first modulator, a D-2.4 filter, and an i-f band filter 6-9 or 12-15 kc a mounting plate containing the second demodulator, an i-f band filter, an 1-f filter D-2.4, and an 1-f amplifier a mounting plate with an oscillator and a busy and ringoff receiver. These same units are used in the V-3 h-f apparatus, and can be used as the second channel. The automatic equipment of the second channel consists of the following an impulse subscriber relay a receiving polarized relay a receiving relay repeater a series relay and a receiving delayed relay. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE