De volgende waarschuwingen zijn opgetreden:
Warning [2] Undefined array key "lockoutexpiry" - Line: 94 - File: global.php PHP 8.0.30 (Linux)
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/global.php 94 errorHandler->error
/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$today_rel - Line: 474 - File: inc/functions.php PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined array key "lockoutexpiry" - Line: 550 - File: global.php PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$search_button - Line: 5 - File: global.php(574) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined array key "avatartype" - Line: 811 - File: global.php PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined array key "avatartype" - Line: 811 - File: global.php PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_match - Line: 15 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_matches - Line: 16 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_nomatches - Line: 17 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtooshort_single - Line: 18 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtooshort_plural - Line: 19 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtoolong_single - Line: 20 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtoolong_plural - Line: 21 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_selectiontoobig_single - Line: 22 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_selectiontoobig_plural - Line: 23 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_loadmore - Line: 24 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/global.php 869 eval
/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_searching - Line: 25 - File: global.php(869) : eval()'d code PHP 8.0.30 (Linux)
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/global.php 869 eval
/showthread.php 28 require_once
Warning [2] Undefined variable $awaitingusers - Line: 34 - File: global.php(872) : eval()'d code PHP 8.0.30 (Linux)
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/global.php 872 eval
/showthread.php 28 require_once
Warning [2] Undefined array key "style" - Line: 937 - File: global.php PHP 8.0.30 (Linux)
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/global.php 937 errorHandler->error
/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$lang_select_default - Line: 5197 - File: inc/functions.php PHP 8.0.30 (Linux)
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/inc/functions.php 5197 errorHandler->error
/global.php 937 build_theme_select
/showthread.php 28 require_once
Warning [2] Undefined array key "additionalgroups" - Line: 7361 - File: inc/functions.php PHP 8.0.30 (Linux)
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/inc/functions.php 7361 errorHandler->error
/inc/functions.php 5217 is_member
/global.php 937 build_theme_select
/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$bottomlinks_markread - Line: 15 - File: global.php(966) : eval()'d code PHP 8.0.30 (Linux)
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/global.php 966 eval
/showthread.php 28 require_once
Warning [2] Undefined array key "mybb" - Line: 1998 - File: inc/functions.php PHP 8.0.30 (Linux)
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/inc/functions.php 1998 errorHandler->error
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/showthread.php 665 mark_thread_read
Warning [2] Trying to access array offset on value of type null - Line: 488 - File: inc/db_mysqli.php PHP 8.0.30 (Linux)
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/inc/db_mysqli.php 488 errorHandler->error
/showthread.php 758 DB_MySQLi->fetch_field
Warning [2] Undefined property: MyLanguage::$ratings_update_error - Line: 5 - File: showthread.php(768) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php(768) : eval()'d code 5 errorHandler->error
/showthread.php 768 eval
Warning [2] Undefined property: MyLanguage::$postbit_button_find - Line: 2 - File: inc/functions_post.php(340) : eval()'d code PHP 8.0.30 (Linux)
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/inc/functions_post.php(340) : eval()'d code 2 errorHandler->error
/inc/functions_post.php 340 eval
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7361 - File: inc/functions.php PHP 8.0.30 (Linux)
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/inc/functions.php 7361 errorHandler->error
/inc/functions_user.php 813 is_member
/inc/functions_post.php 416 purgespammer_show
/showthread.php 1114 build_postbit
Warning [2] Undefined property: MyLanguage::$postbit_threads - Line: 4 - File: inc/functions_post.php(484) : eval()'d code PHP 8.0.30 (Linux)
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/inc/functions_post.php(484) : eval()'d code 4 errorHandler->error
/inc/functions_post.php 484 eval
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(484) : eval()'d code PHP 8.0.30 (Linux)
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/inc/functions_post.php(484) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 484 eval
/showthread.php 1114 build_postbit
Warning [2] Undefined property: MyLanguage::$postbit_button_quote - Line: 2 - File: inc/functions_post.php(674) : eval()'d code PHP 8.0.30 (Linux)
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/inc/functions_post.php(674) : eval()'d code 2 errorHandler->error
/inc/functions_post.php 674 eval
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "showimages" - Line: 757 - File: inc/functions_post.php PHP 8.0.30 (Linux)
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/inc/functions_post.php 757 errorHandler->error
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 762 - File: inc/functions_post.php PHP 8.0.30 (Linux)
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/inc/functions_post.php 762 errorHandler->error
/showthread.php 1114 build_postbit
Warning [2] Undefined array key 1 - Line: 866 - File: inc/class_parser.php PHP 8.0.30 (Linux)
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/inc/class_parser.php 866 errorHandler->error
/inc/class_parser.php 938 postParser->mycode_parse_post_quotes
[PHP]   postParser->mycode_parse_post_quotes_callback1
/inc/class_parser.php 816 preg_replace_callback
/inc/class_parser.php 451 postParser->mycode_parse_quotes
/inc/class_parser.php 201 postParser->parse_mycode
/inc/functions_post.php 774 postParser->parse_message
/showthread.php 1114 build_postbit
Warning [2] Undefined array key 1 - Line: 885 - File: inc/class_parser.php PHP 8.0.30 (Linux)
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/inc/class_parser.php 885 errorHandler->error
/inc/class_parser.php 938 postParser->mycode_parse_post_quotes
[PHP]   postParser->mycode_parse_post_quotes_callback1
/inc/class_parser.php 816 preg_replace_callback
/inc/class_parser.php 451 postParser->mycode_parse_quotes
/inc/class_parser.php 201 postParser->parse_mycode
/inc/functions_post.php 774 postParser->parse_message
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "posttime" - Line: 9 - File: inc/functions_post.php(887) : eval()'d code PHP 8.0.30 (Linux)
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/inc/functions_post.php(887) : eval()'d code 9 errorHandler->error
/inc/functions_post.php 887 eval
/showthread.php 1114 build_postbit
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/inc/functions_post.php 887 eval
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "button_spam" - Line: 59 - File: inc/functions_post.php(887) : eval()'d code PHP 8.0.30 (Linux)
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/inc/functions_post.php(887) : eval()'d code 59 errorHandler->error
/inc/functions_post.php 887 eval
/showthread.php 1114 build_postbit
Warning [2] Undefined array key "invisible" - Line: 1555 - File: showthread.php PHP 8.0.30 (Linux)
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/showthread.php 1555 errorHandler->error
Warning [2] Undefined property: MyLanguage::$quickrestore_confirm - Line: 9 - File: showthread.php(1587) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php(1587) : eval()'d code 9 errorHandler->error
/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$save_changes - Line: 11 - File: showthread.php(1587) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php(1587) : eval()'d code 11 errorHandler->error
/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$cancel_edit - Line: 12 - File: showthread.php(1587) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php(1587) : eval()'d code 12 errorHandler->error
/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$quick_edit_update_error - Line: 13 - File: showthread.php(1587) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$quick_reply_post_error - Line: 14 - File: showthread.php(1587) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$quick_delete_error - Line: 15 - File: showthread.php(1587) : eval()'d code PHP 8.0.30 (Linux)
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval



Forum Technology Interest Group Erpe-Mere › hardware en software › SDR v
SDR zichtverbinding. Maximale afstand.

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SDR zichtverbinding. Maximale afstand.
02-21-2013, 09:47 PM,
#1
on4cbn Offline
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SDR zichtverbinding. Maximale afstand.
ON5QT schreef:www.pi3zdm.nl/horizon.html
Hier kan je berekenen tot welke afstand de data van de vliegtuigen nog te ontvangen zijn. De berekening houdt geen rekening met de frequentie. Er kan wel een aanzienlijke foutmarge zijn ivm weersomstandigheden, freq. ed. maar je hebt dan wel een idee.
Grtn M.

Knap !
Ik zou theoretisch met een antennehoogte van 5 meter en een vliegtuig op 11.000 meter dus zichtverbinding hebben tot 382 km.

Ik zit natuurlijk ook wel met vele obstakels, bomen, gebouwen ...
Tot nu toe verste :
179.4 nautical miles = 332 kilometer in oostelijke richting


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