Accession Number : AD0437196


Title :   THERMOELECTRIC TEMPERATURE CONTROL IN AN/URQ-9 FREQUENCY STANDARD.


Descriptive Note : Interim development rept. no. 12, 1 Jan31 Mar 64,


Corporate Author : WHIRLPOOL CORP ST JOSEPH MICH


Personal Author(s) : Wennerberg,A L


Report Date : 15 Apr 1964


Pagination or Media Count : 25


Abstract : Frequency measurements made on five low temperature 5 mc crystals are plotted to show their frequency stabilization period and long term aging characteristics. Long term drift rates of precision oscillators coupled to the low temperature crystals were found to be within several parts in 10 to the minus 11 power per day. Performance of the five oscillators after periods of shutdown are reported. (Author)


Descriptors :   *FREQUENCY STABILIZERS , THERMOELECTRICITY , CONTROL SYSTEMS , TEMPERATURE CONTROL , OSCILLATORS , CRYSTALS , CRYSTAL OVENS , SUBSTITUTES


Distribution Statement : APPROVED FOR PUBLIC RELEASE