Instruments Division, Meteorological Office, Poona.
The paper describes a simple, automatic, radio-reporting rain-gauge designed and developed in the Instruments Laboratories of the India Meteorological Department at Poona, for the collection of rainfall data from remote and inaccessible areas. A tipping bucket rain-gauge measures the rainfall and stores the information in a data register. A tuning fork-controlled, precision programmer clock switches on the coding and programming units as well as the radio transmitter at predetermined instants of time. The coding unit converts the data stored by the rainfall register into coded messages which are impressed on an U.H.F. transmitter for the broadcast. The signals are picked up by a semi-transistorized U.H.F. transceiver. The range of the instrument is about 100 km.
