{"id":339,"date":"2013-03-05T22:43:32","date_gmt":"2013-03-05T20:43:32","guid":{"rendered":"https:\/\/es1rf.interval.ee\/?page_id=339"},"modified":"2016-02-26T12:59:46","modified_gmt":"2016-02-26T10:59:46","slug":"satellites","status":"publish","type":"page","link":"https:\/\/es1rf.interval.ee\/?page_id=339","title":{"rendered":"Satellites"},"content":{"rendered":"

\"dxcc_sat\"<\/a>In my log I keep around 4100 QSOs from 119 DXCC countries\u00a0 via satellites.<\/strong>
\nAnd hold the DXCC Award Satellite # 296.<\/strong><\/p>\n

This a very interesting and specific subject of HAM activity. In the past years I was very active via satellites.\u00a0 But after crushing of all High Earth Orbit (HEO) satellites (AO-13, AO-40) I practically stopped satellite operation and only periodically checking the satellites segment of bands, just to find new callsigns. And using very simple setup: FT-847 and dual-band vertical Diamond X-400 antenna.
\nPractically, all satellites has name OS\u0421AR\u00a0 with a serial number.\u00a0 OSCAR<\/b>\u00a0means abbreviation from O<\/b>rbiting\u00a0S<\/b>atellite\u00a0C<\/b>arrying\u00a0A<\/b>mateur\u00a0R<\/b>adio)\u00a0<\/span>such as AO-7, AO-10, AO-13, AO-27,\u00a0 AO-40, AO-51….
\n<\/em>The oldest, but still alive satellite, has name OSCAR-7 (AO-7). It has been launched on November 15, 1974, nearly 40 years ago. The largest, most modern and powerful\u00a0 satellite AO-40,\u00a0 after a catastrophic failure of the main battery, was died in January, 2004. Little bit more, than 4 years in the space…\u00a0 Very pity!
\nIt was a lot of experiments with antennas and equipment, when I worked via satellites. Especially, when AO-40 was operational. Many bands, new antennas, different modes (even RTTY!).\u00a0\u00a0 Lot of fun!!\u00a0 Below is my antennas setup for AO-40 (formed).
\n\"Satellite<\/a>From the left to the right:
\n-19 el yagi for 70 cm band with LNA,
\n– 35 el. yagi for 23 cm band;
\n– dual band vertical X-400 Diamond for 145\/435 bands;
\n– 21 turn helix with down converter (2401\/145 Mhz) for “S” band;
\n– 9 el. yagi for 145 Mhz.<\/p>\n

Later, I re\"dish1_small\"<\/a>placed the helix antenna to a 70 cm dish with a MKU 24TM OSCAR down converter (from DB6NT).\u00a0 The AO-40 have had a very powerful transmitters and sensitive receivers on all bands.<\/p>\n

Once upon a time I make an interesting experiment.\u00a0 I spent few hours to build a 21 \"21_helix\"<\/a>turns helix antenna, which was connected to a down converter (2401\/145 Mhz) from Parabolic AB, Sweden.\u00a0\u00a0 At the first evening new antenna was mounted inside the room
\nand I found AO-40 through the closed window. I was surprised\u00a0 to hear a main beacon\u00a0 with a 2 S-units over the noise level!
\nThen I found several stations from\u00a0Europe, VK6XH and UN7PV. They all were loud enough!
\n\"helix_test\"<\/a>Range to the satellite was 62 000 km and squint 12.
\nMy station was in the other room, so I can not call to somebody, but I catch my own CW signal.\u00a0 All was perfect!<\/p>\n

Many QSOs I made via FM satellites (UO-14, AO-27 and AO-51) , using a handheld dual band home made antenna, mounted on a wooden boom.
\n\"OLYMPUS<\/a>\u00a0 \"OLYMPUS<\/a><\/p>\n

A<\/span>mateur R<\/span>adio on the board of I<\/span>nternational Space S<\/span>tation (ARISS-ZARYA<\/span>)<\/span><\/i><\/strong><\/p>\n

I have a several QSO with a crew members of ZARYA. Some of themes are confirmed by a QSL-cards.<\/span><\/span><\/p>\n

\"qsl_front\"<\/a><\/span><\/span> \u00a0\u00a0\"qsl_back\"<\/a><\/span><\/span>\u00a0\u00a0 \"qsl2_front\"<\/a><\/span><\/span>\u00a0 \"qsl2_back\"<\/a><\/span><\/span><\/p>\n

The cosmonauts and astronauts have no much free time to work in the air with radio amateurs. And most of themes are not skilled HAMs.
\nBut, Bill McArthur, KC5ACR, Commander, Expedition 12 International Space Station, logged more than 1750<\/strong> contacts and received honorary Worked All States, Worked All Continents and DX Century Club awards from the ARRL on 2 meters for NA1SS.
\n27-th of November, 2005 I did made very easy QSO with him too. And I was more surprised to get from PA0RKC (Cor) audio file. He recorded part of our QSO, of course only what he can hear, i.e. NA1SS, who was calling me on 145.200MHz (downlink QRG). \u00a0 27112005_ES1RF_NA1SS<\/a><\/p>\n

Now my satellite activity, practically, stopped.\u00a0 No interest any more…<\/p>\n

 <\/p>\n

 <\/p>\n


\n<\/a>
\n<\/span><\/b><\/i><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

In my log I keep around 4100 QSOs from 119 DXCC countries\u00a0 via satellites. And hold the DXCC Award Satellite # 296. This a very interesting and specific subject of HAM activity. In the past years I was very active … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":112,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"onecolumn-page.php","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-339","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/pages\/339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=339"}],"version-history":[{"count":23,"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/pages\/339\/revisions"}],"predecessor-version":[{"id":1990,"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/pages\/339\/revisions\/1990"}],"up":[{"embeddable":true,"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=\/wp\/v2\/pages\/112"}],"wp:attachment":[{"href":"https:\/\/es1rf.interval.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}