Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-12-05
1980-01-15
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
340182, 340207R, G01S 302
Patent
active
041841590
ABSTRACT:
The disclosure relates to a method for silage temperature control in a silo. Measurement transmitters are placed at points where it is desirable to check the temperature of the silage located in the silo. These measurement transmitters are activated, on temperature control, by means of an activation transmitter with an antenna. On activation, the measurement transmitters transmit a signal which is related to the ambient temperature, this signal being received by a receiver. If a measurement transmitter indicates a temperature deviating from a predetermined norm, it is localized by direction finding.
REFERENCES:
patent: 3475742 (1969-10-01), Whitney et al.
patent: 3688292 (1972-08-01), Snively
patent: 3893111 (1975-07-01), Cotter
Blum Theodore M.
Ingenjorsfirman Nils Weibull AB
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