eagle5 0 Posted August 12, 2013 Report Share Posted August 12, 2013 I purchased a Ramsey 100B without the stock whip antenna. Besides the stock antenna, has anyone used a different one. I'd like to find one that I can put in the attic or possibly on the roof. A link or model # would be appreciated. Thanks Mark Quote Link to post Share on other sites
Roger 15 Posted August 12, 2013 Report Share Posted August 12, 2013 I use a J pole and attach it to the top of my mega tree above the star on a 10 section of light conduct, here is a link to show you how to build and cut. http://www.hamuniverse.com/jpole.html Quote Link to post Share on other sites
eagle5 0 Posted August 12, 2013 Author Report Share Posted August 12, 2013 My head hurts now. I might have to purchase this one, don't trust myself to make one. Thanks Quote Link to post Share on other sites
cacoulter 1 Posted August 13, 2013 Report Share Posted August 13, 2013 Here is one that is a little easier to make. http://www.mikestechblog.com/joomla/ham-radio/ham-radio-antennas-category/99-build-2-meter-vertical-antenna.html Quote Link to post Share on other sites
eagle5 0 Posted August 13, 2013 Author Report Share Posted August 13, 2013 I think I understyou and this one better, except for tuning it. Can you school me a bit without too much confusion? Quote Link to post Share on other sites
cacoulter 1 Posted August 13, 2013 Report Share Posted August 13, 2013 Let's do the math... What frequency are you planning on using? Quote Link to post Share on other sites
eagle5 0 Posted August 13, 2013 Author Report Share Posted August 13, 2013 97.3 Quote Link to post Share on other sites
Takoda 23 Posted August 13, 2013 Report Share Posted August 13, 2013 Here's a thread from awhile back that many people used to make their own antenna. http://www.doityourselfchristmas.com/wiki/images/a/a7/How_to_make_a_dipole_antenna.pdf Dennis Quote Link to post Share on other sites
NoelB 11 Posted August 13, 2013 Report Share Posted August 13, 2013 Use one of the calculators out there. I think I used this one: http://www.hamuniverse.com/jpole.html the diagram with the dimensions drawn out for you make it really simple. With my JPole mounted on the eave of the second story of the house, my Ramsey can go two miles at just a little under full power (so, I keep it turned down a little now) Quote Link to post Share on other sites
cacoulter 1 Posted August 13, 2013 Report Share Posted August 13, 2013 So the formula is length=2808/Frequency, so: 2808/97.3 = 28.86" The radials are 5% larger, so: 28.86*1.05 = 30.30" As your tape measure probably only goes down to 1/16", round these off to 28.875 - 28 7/8 30.3125 - 30 5/16 Note the top of page three. He adjusts his antenna to the middle of the two frequencies that he uses. You can also translate that as you don't have to be very precise. Quote Link to post Share on other sites
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