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#1
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Hello,
i would like to make my own antenna for CB radio, mostly because i am interessted in the technics involved, not strictly because of saving some money. I was googling a while but unfortunately the information i gathered was rather unsatisfactory. Quite some theory but lack of practical descriptions. Are there good links to pages how to make it's own antenna? I am interessted in an antenna which gives me a good trade of between gain, ease of operation and ease of manufacturing. I think now that either a "long wire antenna" or a dipole would be the best for my purpose. I would place both vertically on a fishing rod. A horizontal adjustment would yield better results in DX but not so good results for near communication, right? But i wonder how i can make a balun on my own. I guess i need a 1:1 balun for the dipole (i use rg58 to the radio) or a 1:4? balun for the long wire. Would the two antenna types be a good choice? Any help would be appreciated. Greetings, Johann |
#2
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http://www.citizensband.iofm.net/equip/antenna.php
stuff about CB antennas how to trim / tune, not to technical. |
#3
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#4
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#5
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Dan/W4NTI wrote:
Get yourself a empty can of coffee. Place a light bulb in it. Hook the coax to it. Remember the shield goes to the negative of the bulb. Seal the can with lead solder. Bury 15 feet underground. Enjoy. Dan I think you forgot to mention it has 20DB GAIN. |
#6
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No Bruce, this was my reference antenna.
Dan/W4NTI "WA8ULX" wrote in message ... Dan/W4NTI wrote: Get yourself a empty can of coffee. Place a light bulb in it. Hook the coax to it. Remember the shield goes to the negative of the bulb. Seal the can with lead solder. Bury 15 feet underground. Enjoy. Dan I think you forgot to mention it has 20DB GAIN. |
#7
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Can you use a crisco can? I have a lot of those laying around from our
crisco slather partys. YES you can, and if you use a Bunch of them wired in series you get more GAIN, figure 10DB more Gain for each CAN |
#8
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Johann wrote:
"A horizontal adjustment would yield better results in DX but not so good results for near communication, right?" To reach beyond line-of-sight but not very distant locations, usually requires a reflection from the ionosphere nearly directtly overhead. Vertical antennas tend to have a null directly overhead and tend to behave poorly for areas beyond line-of-sight that require an ionospheric reflection nearly overhead. Low horizontal wires radiate substantial energy as antennas at high angles to the horizon, and thus they are suited to reaching areas beyond the horizon. Best regards, Richard Harrison, KB5WZI |
#9
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Johann wrote:
"A horizontal adjustment would yield better results in DX but not so good results for near communication, right?" To reach beyond line-of-sight but not very distant locations, usually requires a reflection from the ionosphere nearly directtly overhead. Vertical antennas tend to have a null directly overhead and tend to behave poorly for areas beyond line-of-sight that require an ionospheric reflection nearly overhead. Low horizontal wires radiate substantial energy as antennas at high angles to the horizon, and thus they are suited to reaching areas beyond the horizon. Best regards, Richard Harrison, KB5WZI |
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