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Description: | Blue aluminium box with red oscillator on top, waveguides at one end and electrical multiway socket at the other. A parametric amplififier for 33.5 GHz, the radio frequency use by the Natural Philosophy Radio Astronomy group under Alistair Flett (wavelength 9 mm). Made by CDC (Control Data Corporation) and supplied by TRG (or maybe the other way around. Model 35D-500-290; Ser. No. 12. This device was obtained as a front-end for the receiver used at the Chilbolton radio telescope (which had no microwave amplification) in the mid 1970s (ABDNP:201232a) but found to be insufficiently stable to be used for serious measurements. See the Aberdeen PhD thesis of Stephen J. Drake (1977) "9 mm wavelength observations at the Chilbolton Observatory". | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1970-1975 | Source: | University of Aberdeen | Creator: | Control Data Corporation | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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