{"id":241136,"date":"2016-05-21T08:55:13","date_gmt":"2016-05-21T12:55:13","guid":{"rendered":"http:\/\/amsat-uk.org\/?p=29427"},"modified":"2016-05-21T08:55:13","modified_gmt":"2016-05-21T12:55:13","slug":"eshail-2-geostationary-p4-a-transponder-frequencies","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=241136","title":{"rendered":"Es\u2019Hail-2 Geostationary P4-A Transponder Frequencies"},"content":{"rendered":"
\"Es'Hail-2<\/p>\n

Es’Hail-2 Geostationary P4-A Transponder Frequencies<\/p>\n<\/div>\n

The launch of the Es\u2019Hail-2 satellite into a\u00a0geostationary orbit at 25.5 degrees East\u00a0 is planned for December 2016. The coverage area of the amateur radio Narrowband (NB) and Wideband (WB) transponders should extend from Brazil to India.<\/p>\n

\"Es'hail-2<\/a><\/p>\n

Es’hail-2 coverage area<\/p>\n<\/div>\n

Es\u2019hail 2 will carry two \u201cPhase 4\u201d amateur radio non-inverting transponders operating in the 2400 MHz and 10450 MHz bands. A 250 kHz bandwidth linear transponder intended for conventional analogue operations and an 8 MHz bandwidth transponder for experimental digital modulation schemes and DVB amateur television.<\/p>\n

Linear transponder<\/strong>\r\n 2400.050 -  2400.300 MHz Uplink\r\n10489.550 - 10489.800 MHz Downlink<\/pre>\n
Wideband digital transponder<\/strong>\r\n 2401.500 -  2409.500 MHz Uplink\r\n10491.000 - 10499.000 MHz Downlink<\/pre>\n
Equipment requirements: <\/strong><\/p>\n
X-Band Downlink:
\n– 89 cm dishes in rainy areas at EOC like Brazil or Thailand
\n– 60 cm around coverage peak
\n– 75 cm dishes at peak -2dB
\n– NB: linear vertical polarisation
\n– WB: linear horizontal polarisation<\/p>\n
S-Band NB-Uplink:
\n– narrow band modes like SSB, CW
\n– 5W nominal Uplink power (22.5 dBi antenna gain, 75cm dish)
\n– RHCP polarisation<\/p>\n
S-Band WB-Uplink (DATV):
\n– wide band modes, DVB-S2
\n– peak EIRP of 53 dBW (2.4m dish and 100W) required
\n– RHCP polarisation<\/p>\n
Presentation on Es’hail by Peter Guelzow DB2OS, President of AMSAT-DL, at the 2013 AMSAT-UK Colloquium http:\/\/www.batc.tv\/streams\/amsat1306<\/a><\/p>\n
\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"
The launch of the Es’Hail-2 satellite into a geostationary orbit at 25.5 degrees East  is planned for December 2016. The coverage area of the amateur radio Narrowband (NB) and Wideband (WB) transponders should extend from Brazil to India. Es’hail 2 will … Continue reading →<\/span><\/a>\"\"<\/p>\n","protected":false},"author":51,"featured_media":615444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-241136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-AMSAT"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/241136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/users\/51"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=241136"}],"version-history":[{"count":4,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/241136\/revisions"}],"predecessor-version":[{"id":241275,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/241136\/revisions\/241275"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/615444"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=241136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=241136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=241136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}