| Patents for H04B 17 - Monitoring; Testing (29,423) |
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| 02/01/1977 | US4006320 Fault locating system and method for transmission lines and repeater stations |
| 01/18/1977 | US4004230 Critical parameter receiver tester |
| 12/14/1976 | US3997842 Method and apparatus for monitoring modulation devices for video signals |
| 10/26/1976 | US3988678 Circuit arrangement for the measuring of group delay and attenuation distortions |
| 10/19/1976 | US3987395 Arrangement of high frequency pulse regenerative repeaters |
| 10/05/1976 | US3984776 Signal quality detector |
| 09/21/1976 | US3982188 Station selecting device having improved noise discrimination circuitry |
| 09/07/1976 | US3979720 Apparatus for monitoring a redundant multi-channel analog system |
| 08/24/1976 | US3976835 Supervisory systems for telecommunication line transmission system |
| 07/20/1976 | US3970940 Overall equipment condition checking |
| 07/20/1976 | US3970926 Method and apparatus for measuring the group delay characteristics of a transmission path |
| 07/06/1976 | US3968436 Apparatus for testing the operability of emergency vehicular radio transmitters |
| 06/29/1976 | US3967137 Circuit arrangement for weighting a current according to magnitude and direction |
| 06/08/1976 | US3962546 Malfunction detection and changeover apparatus for data communications system |
| 06/01/1976 | US3961260 Apparatus and method for testing the condition of an antenna monitoring system |
| 05/25/1976 | US3959606 Installation for checking a repeater of a transmission route |
| 04/13/1976 | US3950699 Device for measuring a signal having a very high noise level |
| 04/13/1976 | US3950622 Line fault locating system |
| 03/16/1976 | US3944929 Monitor for a receiver having means for specifying regions within discrimination domains of a signal space |
| 03/02/1976 | US3942137 Device for the remote adjustment of an inaccessible element |
| 03/02/1976 | US3942115 Dual pilot redundant AFC system for satellite communications system |
| 02/24/1976 | US3940699 Radio frequency energy signalling apparatus |
| 02/03/1976 | US3936700 Electronic overcurrent protection of a DC data transmission circuit |