3911415 is referenced by 211 patents and cites 1 patents.

A power line carrier communication system for linking individual power customers with a central station includes the power distribution network between a distribution substation and the customer locations. Frequency translating and signal reconditioning repeaters are connected to intermediate locations of the network to relay carrier signals at different frequencies. Customers are also linked to individual repeaters so as to be grouped into separate communication zones. Each repeater includes separate repeater channels for duplex operation in which two receiving and two transmitting carrier signals have separate and non-interfering frequencies. The repeaters maintain the carrier signals at usable signal to noise ratios when transmitted through extended power line distances having various attenuation and loading characteristics.

Title
Distribution network power line carrier communication system
Application Number
05/519,702
Publication Number
3911415
Application Date
October 31, 1974
Publication Date
October 7, 1975
Inventor
Whyte Ian A
Agent
Lackey D R
Assignee
Westinghouse Electric Corporation
IPC
H04M 11/04
H04B 03/54
H02J 13/00
View Original Source