https://declassified.library.utoronto.ca/files/original/1da1f8a6abec131d144e0060d59207e6.pdf de534b1c20fcc4d23669351f3298dbdf PDF Text Text . ..Document disclosed under the Access to Information'Act Document divulgue en vertu de la Loi sur I'acces a I'information ^NFTT^PXTTTA'^ A. XJ^J^IM I l/\s» HQS 1350-36 ( S i g s 2A) Amy Headquarters OTTAWA 4 O n t a r i o fwr_ Department of Sicternai Affairs , Communications .Division last Block P&rliraent Buildings OTTAWA 4 Ontario • y • Attnf ...Mr M: JBe.langar ; " Kydafo' Oo^uni cations System.....: -.. '. Trans-Atlantic Telegraph Channel " « • 1* - ' ' Pleas© ire.fer. to our letter BDF 1250-36 (Sigs 2A)"datAd 27 Aug 62 and your , • " . • reply, dated Septembai* 11,'1^62-concerning the. temporary tests on the Hydra Trans-Atlantic Telegraph- Channel* ^ '' ' , •• ' 2* Tests have been conducted on this circuit between Leitria.'and the London EE¥affie Centre (LTO) during the period24«27 '• 'Sep 502 using two channel multiplex equip* ment at each terminal* The* 'results were entirely satisfactory* This" arrangement doubles the circuit capacity by providing: • K . . •> two duplex telegraph, channels .instead of , \ . -one. over the standard duplex telegraph-' •circuit* '• • ..'•'-.. x 1 3* 'During the recent crises. 23 Oct , - to date, the traffic between Leitrim and LTC has doubled. .Sals can be handled as long as the'RTT circuits are suitable for traffic* However during the past two nights radio conditions were unsuitable for traffic " handling and it .was, necessary to use'the2 channel multiplex equipment t© clear the traffic. " .•',.'•.: 4* It is requested that authority be sought to use dual channel operation on " the cable circuit on a call-up basis when radio conditions are unsuitable for traffic and backlogs occur requiring added circuit capsieity to pass the traffic* 5* It should be noted that arrangements have,been made in th© UK by LTC to Implement f this service* . • • ' ' '-.- , y ' fffi#/whp • • ' OR/GiNAL SIGNfD BY WAJOR M. H. WATSON (PD Smith) . ~ Colonel . •. * • D i r e c t o r , Hoyal Canadian Corps of S i g n a l s *-_^-. __ CONFIDENTIAg � Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Hydra Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context HY00148 Title A name given to the resource Hydra Communications System Trans-Atlantic Telegraph Channel Date A point or period of time associated with an event in the lifecycle of the resource 10/25/1962 Source A related resource from which the described resource is derived Hydra Communications - Policy, RG24, 1250-36 Vol. 2, Library and Archives Canada (LAC) Creator An entity primarily responsible for making the resource Department of National Defence Rights Information about rights held in and over the resource Canadian Crown Subject The topic of the resource DND, External Affairs, OTC, LTC, radio communications , Cuban Missile Crisis Description An account of the resource Letter from P.D. Smith (D Sigs) to J.E. Belanger (External Affairs) pertaining to tests of the telegraph channel between the Ottawa Traffic Centre and the London Traffic Centre. P.D. Smith notes traffic on this channel has recently doubled due to "recent crises," but that the RTT channel can handle this provided conditions remain good. Publisher An entity responsible for making the resource available Canada Declassified Type The nature or genre of the resource Text Format The file format, physical medium, or dimensions of the resource PDF Language A language of the resource en