De volgende waarschuwingen zijn opgetreden:
Warning [2] Undefined array key "lockoutexpiry" - Line: 94 - File: global.php PHP 8.4.16 (Linux)
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Warning [2] Undefined property: MyLanguage::$today_rel - Line: 474 - File: inc/functions.php PHP 8.4.16 (Linux)
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Warning [2] Undefined array key "lockoutexpiry" - Line: 550 - File: global.php PHP 8.4.16 (Linux)
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Warning [2] Undefined array key "avatartype" - Line: 811 - File: global.php PHP 8.4.16 (Linux)
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Warning [2] Undefined array key "avatartype" - Line: 811 - File: global.php PHP 8.4.16 (Linux)
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Warning [2] Undefined property: MyLanguage::$select2_matches - Line: 16 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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Warning [2] Undefined property: MyLanguage::$select2_nomatches - Line: 17 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtooshort_single - Line: 18 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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Warning [2] Undefined property: MyLanguage::$select2_inputtooshort_plural - Line: 19 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtoolong_single - Line: 20 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_inputtoolong_plural - Line: 21 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_selectiontoobig_single - Line: 22 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_selectiontoobig_plural - Line: 23 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_loadmore - Line: 24 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 28 require_once
Warning [2] Undefined property: MyLanguage::$select2_searching - Line: 25 - File: global.php(869) : eval()'d code PHP 8.4.16 (Linux)
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Warning [2] Undefined variable $awaitingusers - Line: 34 - File: global.php(872) : eval()'d code PHP 8.4.16 (Linux)
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Warning [2] Undefined array key "style" - Line: 937 - File: global.php PHP 8.4.16 (Linux)
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Warning [2] Undefined property: MyLanguage::$lang_select_default - Line: 5197 - File: inc/functions.php PHP 8.4.16 (Linux)
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/global.php 937 build_theme_select
/showthread.php 28 require_once
Warning [2] Undefined array key "additionalgroups" - Line: 7361 - File: inc/functions.php PHP 8.4.16 (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::$bottomlinks_markread - Line: 15 - File: global.php(966) : eval()'d code PHP 8.4.16 (Linux)
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/global.php 966 eval
/showthread.php 28 require_once
Warning [2] Undefined array key "mybb" - Line: 1998 - File: inc/functions.php PHP 8.4.16 (Linux)
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/inc/functions.php 1998 errorHandler->error
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/showthread.php 665 mark_thread_read
Warning [2] Undefined property: MyLanguage::$ratings_update_error - Line: 5 - File: showthread.php(768) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 768 eval
Warning [2] Undefined variable $postsdone - Line: 901 - File: showthread.php PHP 8.4.16 (Linux)
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Warning [2] Undefined array key 627 - Line: 907 - File: showthread.php PHP 8.4.16 (Linux)
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Warning [2] Undefined array key 627 - Line: 1630 - File: showthread.php PHP 8.4.16 (Linux)
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/showthread.php 1630 errorHandler->error
/showthread.php 919 buildtree
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/inc/functions_post.php 340 eval
/showthread.php 920 build_postbit
Warning [2] Undefined array key "additionalgroups" - Line: 7361 - File: inc/functions.php PHP 8.4.16 (Linux)
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/inc/functions.php 7361 errorHandler->error
/inc/functions_user.php 813 is_member
/inc/functions_post.php 416 purgespammer_show
/showthread.php 920 build_postbit
Warning [2] Undefined property: MyLanguage::$postbit_threads - Line: 4 - File: inc/functions_post.php(484) : eval()'d code PHP 8.4.16 (Linux)
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/inc/functions_post.php(484) : eval()'d code 4 errorHandler->error
/inc/functions_post.php 484 eval
/showthread.php 920 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(484) : eval()'d code PHP 8.4.16 (Linux)
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/inc/functions_post.php(484) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 484 eval
/showthread.php 920 build_postbit
Warning [2] Undefined property: MyLanguage::$postbit_button_quote - Line: 2 - File: inc/functions_post.php(674) : eval()'d code PHP 8.4.16 (Linux)
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/inc/functions_post.php 674 eval
/showthread.php 920 build_postbit
Warning [2] Undefined array key "showimages" - Line: 757 - File: inc/functions_post.php PHP 8.4.16 (Linux)
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/inc/functions_post.php 757 errorHandler->error
/showthread.php 920 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 762 - File: inc/functions_post.php PHP 8.4.16 (Linux)
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/inc/functions_post.php 762 errorHandler->error
/showthread.php 920 build_postbit
Warning [2] Undefined array key "posttime" - Line: 9 - File: inc/functions_post.php(887) : eval()'d code PHP 8.4.16 (Linux)
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/inc/functions_post.php(887) : eval()'d code 9 errorHandler->error
/inc/functions_post.php 887 eval
/showthread.php 920 build_postbit
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/inc/functions_post.php(887) : eval()'d code 19 errorHandler->error
/inc/functions_post.php 887 eval
/showthread.php 920 build_postbit
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/inc/functions_post.php(887) : eval()'d code 59 errorHandler->error
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/showthread.php 920 build_postbit
Warning [2] Undefined array key "invisible" - Line: 1555 - File: showthread.php PHP 8.4.16 (Linux)
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/showthread.php 1555 errorHandler->error
Warning [2] Undefined property: MyLanguage::$quickrestore_confirm - Line: 9 - File: showthread.php(1587) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 1587 eval
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/showthread.php(1587) : eval()'d code 11 errorHandler->error
/showthread.php 1587 eval
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/showthread.php 1587 eval
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/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$quick_reply_post_error - Line: 14 - File: showthread.php(1587) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php 1587 eval
Warning [2] Undefined property: MyLanguage::$quick_delete_error - Line: 15 - File: showthread.php(1587) : eval()'d code PHP 8.4.16 (Linux)
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/showthread.php(1587) : eval()'d code 15 errorHandler->error
/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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Forum Technology Interest Group Erpe-Mere › Zelfbouw › Zenders - ontvanger zelfbouw en kits
Veldsterkte meter met AD8307

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Veldsterkte meter met AD8307
01-29-2014, 04:12 AM,
#1
on4gin Offline
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Veldsterkte meter met AD8307
Iemand interesse hiervoor?

Deze logaritmische 9-traps versterker werkt tot 500 MHz. De gevoeligheid is regelbaar van 0 - >80dB, van microwatts tot 1kW.
Bij maximale gevoeligheid dient P4 ingesteld te worden zodat de meter zonder ingangssignaal nul aanwijst. R1 en R5 zijn optioneel, deze monteren indien een 50 Ohm ingangsimpedantie nodig is.
In dat geval deze 2 weerstanden aan de zijde van R6 100k weerstand doorverbinden.

[Afbeelding: Schema.jpg]
[Afbeelding: Proto.jpg]


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Veldsterkte meter met AD8307 - door on4gin - 01-29-2014, 04:12 AM

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