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#1
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Fm radio antenna question Please help !
I am interested to know if there is a way to transmitt FM radio frequencies
in a directional path. I need to transmit from 1/8 to 1/4 mile in a very direct narrow pattern. Does anyone know if this is possible. |
#2
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Yes, you only need a directional antenna. There are a myriad of solutions
available. First FM is a modulation method, not a set of frequencies. What frequency are you interested in? A little more data would enable the newsgroup members to help you. -- ----------------------------------------------------------- Monday January 19th is Robert E. Lees Birthday. http://gilbertnews.net "me" wrote in message ... I am interested to know if there is a way to transmitt FM radio frequencies in a directional path. I need to transmit from 1/8 to 1/4 mile in a very direct narrow pattern. Does anyone know if this is possible. |
#3
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"Me" wrote:
"I am interested to know if there is a way to transmit FM radio frequencies in a directtional path. I need to transmit from 1/8 to 1/4 mile in a very direct narrow pattern." If these are 3-meter band (100 MHz) signals, a dish to confine these frequencies directly to a small beamwidth (20-degrees) is impracticably large (about 30 feet in diameter). Likewise, a Yagi to confine beamwidth to about 20-degrees is about 20 meters (66 feet) long. The best way to reach 1/8 to 1/4 mile with a narrow pattern may be with a wire or cable of either electrical or optical type. If 100 MHz is the information signal, it can be the modulation on a carrier frequency in the microwave range which can be directionally confined with reasonably sized antennas, or the signal can be modulated by digital or analog methods on an optical laser or led circuit which confines the beamwidth to a narrow beam. Best regards, Richard Harrison, KB5WZI |
#4
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me wrote:
I am interested to know if there is a way to transmitt FM radio frequencies in a directional path. I need to transmit from 1/8 to 1/4 mile in a very direct narrow pattern. Does anyone know if this is possible. What frequency? Hams are allowed to use FM on most ham bands from 29 MHz to hundreds of GHz. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#5
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Of course it's possible. It comes down to your application - what do you
want to do with it? Your application will dictate frequency, power requirements, antenna syze/design, and even whether or not you really want FM... - KI6PR "me" wrote I am interested to know if there is a way to transmitt FM radio frequencies in a directional path. I need to transmit from 1/8 to 1/4 mile in a very direct narrow pattern. Does anyone know if this is possible. |
#6
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Added: I am trying to transmit the entire fm broadcast bandwidth 88-108mhz.
very low power, very narrow pattern. "me" wrote in message ... I am interested to know if there is a way to transmitt FM radio frequencies in a directional path. I need to transmit from 1/8 to 1/4 mile in a very direct narrow pattern. Does anyone know if this is possible. |
#7
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me wrote:
Added: I am trying to transmit the entire fm broadcast bandwidth 88-108mhz. very low power, very narrow pattern. Is that legal? -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
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