CPC Subgroup
H04B 17/20 of receivers
Full Title
Monitoring; Testing (of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07) > of receivers
8 direct subcodes
Child Classifications
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- H04B 17/21 for calibration; for correcting measurements
- H04B 17/23 Indication means, e.g. displays, alarms, audible means
- H04B 17/24 with feedback of measurements to the transmitter
- H04B 17/26 using historical data, averaging values or statistics
- H04B 17/27 for locating or positioning the transmitter
- H04B 17/29 Performance testing