Beam antenna for satilite question
Question on a beam antenna can i put a extra reflector 90 deg or on
the botom of the director so the signal will also be reflected more upwared sence i dont have a tracking roater will this help on high altatude passes? |
"KD4PQF" wrote in message om... Question on a beam antenna can i put a extra reflector 90 deg or on the botom of the director so the signal will also be reflected more upwared sence i dont have a tracking roater will this help on high altatude passes? you might want to just use a 1/4-wave vertical or a dipole beams are good if you aim them where you want to hear but if they're not aimed they are worse than a rubber-duck. the gain in the forward direction is at the expense of other directions. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.781 / Virus Database: 527 - Release Date: 10/22/2004 |
"KD4PQF" wrote in message
om... Question on a beam antenna can i put a extra reflector 90 deg or on the botom of the director so the signal will also be reflected more upwared sence i dont have a tracking roater will this help on high altatude passes? you might want to just use a 1/4-wave vertical or a dipole beams are good if you aim them where you want to hear but if they're not aimed they are worse than a rubber-duck. the gain in the forward direction is at the expense of other directions. YOu don't usually use 1/4 verticals for over head passes of the sats. They have a big null overhead. Use a horizontal dipole or beter a dipole over a reflector. Think about 3/8 wavelength is the best distance for the dipole over the reflector but need to check that . |
you might want to just use a 1/4-wave vertical or a dipole
beams are good if you aim them where you want to hear but if they're not aimed they are worse than a rubber-duck. the gain in the forward direction is at the expense of other directions. YOu don't usually use 1/4 verticals for over head passes of the sats. They have a big null overhead. Use a horizontal dipole or beter a dipole over a reflector. Think about 3/8 wavelength is the best distance for the dipole over the reflector but need to check that . I'll buy that - point is though - beam's a no --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.781 / Virus Database: 527 - Release Date: 10/21/2004 |
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