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NSA Japan HF Briefing

Apr. 24 2017 — 8:48a.m.

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TO USA, FVEY) Topic: NSA High Frequency (HE Collaboration effons with Japan To USA, FVEY) Background: For many years. NSA collabomted with the DFS on the exchange of high frequency direction finding (HFDF) information via the CROSSHAIR direction finding network. Unfortunately, Japan's panicipation in CROSSHAIR effectively ended in 2009. Japan prefers to perform DF manually. Our perception is that Japan has interpreted participation as an inability to perform manual DF, which is not the case. Since 2009, the Terrestrial RF Division (S351 1) has been working to rerengage this partner on the exchange of HFDF data. in response the DPS recently agreed to a manual exchange of KLEIGLIGHT HFDF data with NSA. Starting in July 2012, the NSA Office of China and Korea, SZB. submitted 248 requests for HFDF lines of hearing (LOBS) to the DPS. The partner was very efficient in responding to these requests, responding on average within three hours. aiding SZB in obtaining fixes on targets that could not be acquired using NSA's CROSSHAIR system. During the same period, DFS made nine HFDF requests all of which were serviced. TO USA, FVEY) in November 2012, S351 1 personnel I Director DFS, on NSA's new BORESIGHT HFDF system. in response. ted NSA to visit Japan in 2013 for further discussions, emphasizing that cooperation on HFDF was desired. However, he also expressed his need for concurrence from Japan's Ministry of Defense before committing to an information exchange between BORESIGHT and Japan's system. He stated that he would like NSA to better understand Japan's HFDF system and programmatic which include the need to increase HFDF capabilities in the face of austere budgets. (U) Potential Laudrninc: - 1n the past, the Partner has mistakenly perceived that NSA was trying to force DFS to use US. technical solutions in place of their own. When this occurred, the Partner reacted in a strong, negative manner. NSA does not wish to replace the DFS HFDF network with BORESIGHT. Rather. NSA's goal with DFS is system interoperability through use of common data standards. (U) Direclor's Talking Points: - TO USA, JPN. FVEY) Thank the Partner for their cooperation in the current effort to exchange HFDF data via KLEIGLIGHTS. - TO USA, JPN. FVEY) Reaffirm that NSA would like to send representatives to Japan this year to further discuss HFDF collaboration. - To USA, JPN. FVEY) State that NSA's ultimate goal is an automated exchange ofinformation via BORESIGHT. This automated exchange would be based on common data standards and would not require Japan to adopt NSA HFDF technology, nor change how DFS currently performs HFDF operations. (U) Dale of Material: 02 January 2013 Originator: Chief, Terrestrial RF Division, Derlved From: 1752 Dated 20070108 Declasst'fyott 20380101

SECRET//COMINT//NOFORN (U//FOUO) Alt. POC: , Deputy Chief, Terrestrial RF Division, S3511, (U//FOUO) Classification Review By: , CAO, S3511, SECRET//COMINT//NOFORN

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