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Old 04-24-2009, 03:31 PM   #11
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OK I will shop the duals. Now, is there an actual advantage in transmitting distance between VHF and UHF??
They're both pretty similar in that they're Line of Sight (LOS). VHF tends to have more issues with ground terrain and UHF tends to work a little better around concrete and steel.

Lower frequency is less likely to be blocked by objects
Lower frequency is more likely to bend (it will follow a wire, where as higher freqs in the gigahertz range need coaxial cable and waveguides (and radar horns!) to make them get to the antenna)
Lower frequency in general needs more power to transmit
Higher frequency can carry more information (higher bandwidth).
Higher frequencies are more generally available, while low ones have mostly been reserved for specific uses.
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Old 04-24-2009, 05:40 PM   #12
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how tough is it to get a license ?
pretty involved or just read the book, take a test ?
For the Tech. license its pretty simple 35 question multiple choice test.

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Old 04-24-2009, 05:44 PM   #13
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I bought the study guide and read through it, took the practice tests a couple of times and breezed through the test. The ARRL site has a database with the test time and locations near you.
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Old 04-24-2009, 05:47 PM   #14
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I should probably get my tech liscense
duane can you send em a copy as well?
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Old 04-24-2009, 09:13 PM   #15
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There are several websites setup with study guides as well. I got the ARRL manual from barnes and nobel. I think Eric has one too. Most sites have a database of test questions, so if you are online with time to kill those are free.
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Old 04-24-2009, 09:24 PM   #16
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I think I still have one guide. I think Phatty has the other. With a little study, the test is a cake-walk. I crammed the nite before and missed one.
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Old 04-25-2009, 03:42 AM   #17
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Originally Posted by diirk View Post
They're both pretty similar in that they're Line of Sight (LOS). VHF tends to have more issues with ground terrain and UHF tends to work a little better around concrete and steel.

Lower frequency is less likely to be blocked by objects
Lower frequency is more likely to bend (it will follow a wire, where as higher freqs in the gigahertz range need coaxial cable and waveguides (and radar horns!) to make them get to the antenna)
Lower frequency in general needs more power to transmit
Higher frequency can carry more information (higher bandwidth).
Higher frequencies are more generally available, while low ones have mostly been reserved for specific uses.
Got it

Thanks
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Old 04-25-2009, 04:04 AM   #18
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Good info. I need all I can get.
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