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请看真正的天线共用器有图 [复制链接]

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离线BD9TD
 
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4063
只看楼主 倒序阅读 0楼 发表于: 2005-08-09
离线BD9TD
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4063
只看该作者 1楼 发表于: 2005-08-09
再来!!!!!!!!!!!!!!!
离线BA7EI
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7096
只看该作者 2楼 发表于: 2005-08-09
俺也有一台,是纯接收的,一进20出,新疆维吾尔自治区某火腿友情转让的,400元
离线老干部
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7646
只看该作者 3楼 发表于: 2005-08-09
你那个天线放大器是给该厂的有源环形天线用的。如果有全套阵列的天线,支架和硬参数线,在加你那个分配/供电单元就值钱了
离线VR2YTK
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340
只看该作者 4楼 发表于: 2005-08-09
各位大大是否只可接收 , 因看到好像是75欧姆的????
离线TG668
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5998
只看该作者 5楼 发表于: 2005-08-17
电视的吗?1234
离线BG7MCE
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934
只看该作者 6楼 发表于: 2005-08-18
'
俺也有一台,是纯接收的,一进20出,新疆维吾尔自治区某火腿友情转让的,400元
'
是否通信用50欧,想找一台,麻烦你。
离线BG7KIH
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10689
只看该作者 7楼 发表于: 2005-08-18
接收的没有太大意思吧.
离线BA7EI
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7096
只看该作者 8楼 发表于: 2005-08-18
'
是否通信用50欧,想找一台,麻烦你。
'


找bg0fd或者bd0as
离线BA7MY
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672
只看该作者 9楼 发表于: 2005-08-19
replace 5 coax feedlines with one! ameritron's remote coax switch lets you remotely switch up to five separate antennas -- so you can replace five coax feedlines with a single coax. eliminate a tangle of troublesome coax and have a simple and neat installation -- with just a single coax feedline. the rcs-8vn consists of two units -- the weatherproof switching box that mounts on your tower or mast and the control unit that's placed at your operating station. vswr is less than 1.2 from dc to 250 mhz and less than 0.1 db loss at 150 mhz -- if you operate hf to vhf/uhf. this rcs-8v is for you. it handles 5 kw below 30 mhz and 1 kw at 150 mhz. you can ground unused positions or leave them open. the indoor control unit is all metal to prevent rfi and tvi. it also has leds to indicate the antenna you've selected. a lexan scratch proof front panel has a markable surface for labeling your antennas. the rcs-8vn operates from 120 vac power source. uses any 6 conductor control line (not supplied) and allows safe operation with 14 volts control voltage.


specifications
number of antennas positions: 5
loss at 150 mhz: less than 1db
vswr: under 1.2 to 1 from dc to 250 mhz.
impedance: 50 ohms
power capability: 1500 watts average continuous.
antenna select time: 50 ms.
power requirements: 120 vac 50/60 hz at 5 watts.
connectors: n