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#1
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Renzo, I'm sure members can answer your other questions I can't, but may I
ask why you would choose 1/4 wavelength "slopers" when a 1/2 wavelength dipole (or several, as you planned) on the same tower would take up no more space, and probably significantly improve reception? Jack "Renzo" wrote I would like to install 4 quarter wavelength slopers with different directions on the same tower. Any questions: a) Is it a fine idea to select one of the slopers through a relay box located at the tower? b) Is there a way to use the selected one like the driven element and the unused elements (3) like reflectors? The fact is, is it possible to realize a parasitic electrically rotated array using the quarter slopers instead of the half wavelength (ARRL Antenna Handbook)? Many thanks in advance for any possible infos about! |
#2
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![]() "Jack Painter" wrote in message news:L0xVb.15972$gl2.982@lakeread05... Renzo, I'm sure members can answer your other questions I can't, but may I ask why you would choose 1/4 wavelength "slopers" when a 1/2 wavelength dipole (or several, as you planned) on the same tower would take up no more space, and probably significantly improve reception? Jack "Renzo" wrote I would like to install 4 quarter wavelength slopers with different directions on the same tower. Any questions: a) Is it a fine idea to select one of the slopers through a relay box located at the tower? b) Is there a way to use the selected one like the driven element and the unused elements (3) like reflectors? The fact is, is it possible to realize a parasitic electrically rotated array using the quarter slopers instead of the half wavelength (ARRL Antenna Handbook)? Many thanks in advance for any possible infos about! I have a 5btv vertical, it works fair but of course the bandwidth is very narrow. The reason for using the vertical was because my tower blew down, do the vertical was used out of necessity. After putting 60 feet of tower back up, I ran a 1/4 wave slopper for 75, thinking it would work way better than the vertical. It didn't. I couldn't tell a bit of difference. I thought my noise level would be lower, it wasn't. The only advantage over the vertical was the bandwidth was much better. So at that point I added another half to the slopper to make it an inverted vee. That made a difference. Noise level was 2 S-Units lower and signals both transmit and receive were at least 10 to 15 db stronger. I was really disappointed with the 1/4 wave slopper. That is my experience with the antenna. Dan Vitale |
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