7 Elements 145MHz Quad antenna |
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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BU2CQ 發表於 2013-9-1 21:35:35
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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BU2CB 發表於 2013-9-2 05:41:05
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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BU2CB 發表於 2013-9-2 07:16:48
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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BX4AP 發表於 2013-9-2 10:09:13
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
|
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BX4AP 發表於 2013-9-2 10:44:56
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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BV2KS 發表於 2013-9-2 14:59:42
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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點評
OM: "投影面積" 说得好 框內金屬投影面積之損耗與振子方框面積成比例 小些就損耗小 最好是無....
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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BX4AP 發表於 2013-9-2 20:30:18
點評
5波段諧振5個框 都接同軸綫 成"開路環" 不菅框外框內框 因開環而等於: 框內.外置金屬物.降框電感 加寬頻帶 增開環損耗 這比VHF框內"短路园環" 小很...
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HAM~就是要分享 HAMTalk Club
http://www.HAMTalk.asia
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