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#1
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from Gilles ve2lx
1st time on REC group I just install temporary an invert dipole feeded with ((( tv twinlead 300 ohm ))) actually I have no RF interferences from 160 to 12 m (but only low on 10 m but no more usable anyway ) compare to my end fed I used before...! antenna length is 66 ft or 33 ft each side and feeder length about 48 ft...the dipole is parralele to the back of the 20 appartement's house and the full SFC remote coupler or tuner ( builted only for wire tuning ) is on my tuner is on the back galery 8 ft from radio on 3 rd floor a little above the steel hand rail...! ((( I seen many article on internet and on tech reference ))) mentionning that when it is humid, damp periode, snow and so on there might be a great variation of swr during these conditions......? ((( Is there some one on the groupe that used ))) 300 ohm feeder with a dipole for a long periode especially during fall and winter to learn about that type of installation......? wishing to ear soon Gilles ve2lx --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 2004-08-19 |
#2
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folio wrote:
from Gilles ve2lx ...... ((( Is there some one on the groupe that used ))) 300 ohm feeder with a dipole for a long periode especially during fall and winter to learn about that type of installation......? wishing to ear soon Gilles ve2lx Gilles, I Used 50 ft of the cheapest TV twinlead (300ohm) I could find because it was a temporary test. The antenna worked so well that I left it up from 83 to 96 through all kinds of weather including harsh Alberta winters. I never noticed any noticeable SWR changes with weather, and when I took it down I saved the twinlead for future use -- it was as good as new! Bon Chance! Irv VE6BP -- -------------------------------------- Diagnosed Type II Diabetes March 5 2001 Beating it with diet and exercise! 297/215/210 (to be revised lower) 58"/43"(!)/44" (already lower too!) -------------------------------------- Visit my HomePage at http://members.shaw.ca/finkirv/ Visit my Baby Sofia website at http://members.shaw.ca/finkirv4/ Visit my OLDTIMERS website at http://members.shaw.ca/finkirv5/ -------------------- Irv Finkleman, Grampa/Ex-Navy/Old Fart/Ham Radio VE6BP Calgary, Alberta, Canada |
#3
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Used 300-ohm with no problem - but remember to use strain relief at
connections "folio" wrote in message ... from Gilles ve2lx 1st time on REC group I just install temporary an invert dipole feeded with ((( tv twinlead 300 ohm ))) actually I have no RF interferences from 160 to 12 m (but only low on 10 m but no more usable anyway ) compare to my end fed I used before...! antenna length is 66 ft or 33 ft each side and feeder length about 48 ft...the dipole is parralele to the back of the 20 appartement's house and the full SFC remote coupler or tuner ( builted only for wire tuning ) is on my tuner is on the back galery 8 ft from radio on 3 rd floor a little above the steel hand rail...! ((( I seen many article on internet and on tech reference ))) mentionning that when it is humid, damp periode, snow and so on there might be a great variation of swr during these conditions......? ((( Is there some one on the groupe that used ))) 300 ohm feeder with a dipole for a long periode especially during fall and winter to learn about that type of installation......? wishing to ear soon Gilles ve2lx --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 2004-08-19 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.744 / Virus Database: 496 - Release Date: 8/24/2004 |
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