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旧 Dec 13th, 2007, 14:44   只看该作者   #181
cbitmap
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默认

http://www.chinasmile.net/forums/sho...9&postcount=98

线不够长,要加接口(Rg6 In-line Coupler)并加延长线(RG6 coaxial cable)。线比较长的话,最好在最接近天线的位置加signal amplifier。

线太长的话,自己截掉,再加 F-Connector。否则会有不必要的信号衰减。

其实我还是不怎么明白你到底想知道什么。你说得分线器指的是signal splitter吗?加哪里都可以的,在之前一定要加signal amplifier。
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旧 Dec 18th, 2007, 23:47   只看该作者   #182
杜小月
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默认 好帖子

去年的。可惜
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旧 Dec 27th, 2007, 14:58   只看该作者   #183
bian
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Talking 11

还是很实用的
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旧 Dec 29th, 2007, 13:54   只看该作者   #184
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默认

请问CBITMAP, 如果装在阁楼里,真得不需要接地线吗?我是有点担心雷击的危险,我对这些没概念,请指教.谢谢
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旧 Jan 2nd, 2008, 23:11   只看该作者   #185
david1987
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默认 deham, 请推荐个装天线的人,谢了

deham, 请推荐个装天线的人,谢了
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旧 Jan 3rd, 2008, 08:17   只看该作者   #186
cbitmap
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默认

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请问CBITMAP, 如果装在阁楼里,真得不需要接地线吗?我是有点担心雷击的危险,我对这些没概念,请指教.谢谢...
关于attic antenna是否要地线的问题,网上也有争论,有人说要,有人说不要。接地指的是天线体本身接地,和coaxial cable经grounding block接地。两个接地同时做。

专家的看法,如果被雷电直接击中,至少需要直径1尺的接地线,才可以释放电流。一般接地线的作用是释放静电。

能接地当然更好,释放静电,减少被雷电直接击中的概率,还能对收看的效果有一定的帮助。如果不易做到,或做不到,不接地线问题也不大。还有人说attic里的其他东西被雷电击中的可能性也说不定更大,所以不用太过于担心attic antenna的接地问题。

此帖于 Jan 3rd, 2008 08:50 被 cbitmap 编辑。
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旧 Apr 4th, 2008, 13:47   只看该作者   #187
tulipa
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默认

线帖沉底太久了,顶上来透口气
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旧 Apr 11th, 2008, 12:45   只看该作者   #188
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默认

线帖沉底太久了,顶上来透口气

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旧 Jan 5th, 2009, 23:29   只看该作者   #189
Jameschen6
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默认 请教DEHAM 大侠

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作者: deham 查看帖子
有世嘉堡地区住house的朋友用indoor电视天线看到HDTV吗?
DEHAM 大侠,我已经定了CM4221HD,想要自己安装,想先在ATTIC里试试,不行就只能烟筒了,我有个问题,如何调角度,人家专业人员有表,正象你说的能测量出来接收强度,难道我就只能问屋里的人,清楚吗?能告知你的安装公司吗?你觉得他们值得推荐吗?也许我也得请他们来。谢谢

另外,我住在McCowan/Lawrence
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旧 Jan 5th, 2009, 23:58   只看该作者   #190
deham
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默认

你那个位置很好调的,信号很强。不用仪器,就找个人在下面帮你看着电视就可以了,最多10分钟调好,不过现在上房顶真的很冷。attic里面走线又比较麻烦,而且效果也不敢保证。还是挑哪天天气好再上房顶吧。
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旧 Jan 6th, 2009, 22:48   只看该作者   #191
ljnzxync
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默认

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作者: Jameschen6 查看帖子
DEHAM 大侠,我已经定了CM4221HD,想要自己安装,想先在ATTIC里试试,不行就只能烟筒了,我有个问题,如何调角度,人家专业人员有表,正象你说的能测量出来接收强度,难道我就只能问屋里的人,清楚吗?能告知你的安装公司吗?你觉得他们值得推荐吗?也许我也得请他们来。谢谢

另外,我住在McC...
在哪里买的cm4221HD?多少钱?效果如何?
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旧 Jan 6th, 2009, 22:58   只看该作者   #192
Chinese Canadian
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默认

indoor天线,现在可以收15个
4-1
5-1
7-1
9-1
11-1
17-1
18-1
23-1
25-1
29-1
41-1
44-1
57-1
64-1
66-1
其中41-1经常没有
2-1从来没有收到过

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旧 Jan 6th, 2009, 23:58   只看该作者   #193
Jameschen6
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默认 ordered

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作者: ljnzxync 查看帖子
在哪里买的cm4221HD?多少钱?效果如何?
ordered from Sensuz, has not arrived yet. antenna only, total 62.14CAD.

One more question for Deham, what is the size of bare copper grouding wire. It was said at least AWG10 in the Califonia standard.
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旧 Jan 7th, 2009, 02:07   只看该作者   #194
sthunter
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默认

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作者: Chinese Canadian 查看帖子
indoor天线,现在可以收15个
4-1
5-1
7-1
9-1
11-1
17-1
18-1
23-1
25-1
29-1
41-1
44-1
57-1
64-1
66-1
其中41-1经常没有
2-1从来没有收到过
牛人,我室外天线才收到9个,NND同人不同命
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旧 Jan 7th, 2009, 13:08   只看该作者   #195
deham
PFC VS UFC
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默认

引用:
作者: Chinese Canadian 查看帖子
indoor天线,现在可以收15个
4-1
5-1
7-1
9-1
11-1
17-1
18-1
23-1
25-1
29-1
41-1
44-1
57-1
64-1
66-1
其中41-1经常没有
2-1从来没有收到过
没有2-1比较奇怪,这个信号是应该比较好的。7-1和29-1都有了,2-1应该没有问题的。
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旧 Jan 7th, 2009, 19:04   只看该作者   #196
yougofirst
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默认 try this indoor from RCA

I got it for US$30 and use it in Markham, and get 12 analog
and 4 digital channels.


http://www.amazon.com/ANT1500-Multi-...1372985&sr=8-1
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旧 Jan 7th, 2009, 22:17   只看该作者   #197
Chinese Canadian
娃儿他爹
级别:22 | 在线时长:606小时 | 升级还需:15小时级别:22 | 在线时长:606小时 | 升级还需:15小时级别:22 | 在线时长:606小时 | 升级还需:15小时级别:22 | 在线时长:606小时 | 升级还需:15小时级别:22 | 在线时长:606小时 | 升级还需:15小时级别:22 | 在线时长:606小时 | 升级还需:15小时
 
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默认

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作者: deham 查看帖子
没有2-1比较奇怪,这个信号是应该比较好的。7-1和29-1都有了,2-1应该没有问题的。...
是啊,我就用的Philips的室内天线,从来收不到2-1。
郁闷ing
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旧 Jan 8th, 2009, 00:46   只看该作者   #198
yougofirst
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默认

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作者: yougofirst 查看帖子
I got it for US$30 and use it in Markham, and get 12 analog
and 4 digital channels.


http://www.amazon.com/ANT1500-Multi-...nal-Digital-Pa...

Now I can get 7 digital channel in Markham in my house with this indoor antenna without amplifier.
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