THE NATIONAL ARCHIVES
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CO 537/1425
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CO 537/1425
THE NATIONAL ARCHIVES
restrictions. Further information is given in the enclosed Terms and Conditions of supply of National Archives' leaflet. Please note that this copy is supplied subject to the National Archives' terms and conditions and that your use of it may be subject to copyright
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Continuing Mr. Shale said that working on the assumption that no further-roductions could bo vado and that it would be dupɔssible tɔ got the nooosstry amount of land, ho had propared a rough sketch plan of a possible layout of houbic Aorials which would be suitable for both receiving and transmitting sites. This layout would ontail connection of several roccivors on a cation corial. This could only bo one by using wide band amplifiers.. Ho table the sketch layout for oxamination and aphasised that the layout would provide the minimu eccoptable efficiency and should only be adopted in the avont that nothing bottor could be obtainot. The layout 2 not includo the Rhombics for the Hiroshin circuit, if a Rhxbic was require for this circuit the skotch would have to be oxpended to accomodate it. The layout provided aloqueto space for triatics for dipolos.
Group Captain Randle said that if necessary the proposed layout would be acceptable tɔ Air Ministry. It catered adequately for the Singapore circuits which wore their most important requirement. It would be preferable to have an equally effective aerial syston for Hiroshima, but Air Ministry would be prepared to accept a loss efficient service to Jepan if owing tɔ the limitations of space it was the only way to ensure first class communicatiɔon with Singapore.
Lt.Cǝl.Tucker said the proposed layout would be acceptable to
War Office.
Mr.Humby. asked if ir. Smale had considered the possibility of utilizing two way reception to get more hours of direct communication with U.K. Cɔmunication on the bearing shown in the sketch plan was over the smaller portion of the great circle, at certain scasons reception using the greater portion of the groat circle would be possible.
Mr. Smalo said that with present technique and equipment it is not possible to get 24 hours communication between U.K. and Hɔng Kɔng. Cables & Wireless had plannel to work direct as much as possible and to link via Colabo for the remainder of the time,
It would be possible to increase the hours o direct communication by using double-end Rh.xibics but he wondered if the extra hours gained would be sufficient to warrant this.
Mr.ihumby take? lir. Sticle, what type of wide band amplifiers he considered should be used.
Hr.Smale replic that Cathode follower amplifiers would be necessary. He thought that by using this type up to 6 receivers could be coupled to any one aerial.
Mr. Wynne-Jones sail that possibly the Hong Kong Board had not fully un'orstɔɔ ɔur previous recomenlatiɔns. If it was our intention to buy or requisition 250 acres at each site and then fonce the whole area. in, it woul certainly bo extranely difficult if not impossible to get the necessary land, It appeared from bir. Smale's sketch however that it woul! only be necessary to fence in & relatively sucll area in which to accomodato buildings, tɔ house the trens.ittors or receivers, workahops and stɔre rɔɔms etc. The ground on which the masts wore uroctol nood not be fenced in, in fact it would appear to be sufficient if mast rights were obtained outside the fenced in area. Lasts coul then be erected over a very wide area and would not interfere tɔɔ greatly with agriculture since almost all the ground under the aerials could still be cultivated. He thought that the necessary land and masts rights could be obtained and if so th.ro would be nɔ need to adopt a constrictul layout as described by Mr.Smale on his return to Hong Kong he would do everything he could tr
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