Without going into great detail with the reason this question is being asked......local guy wants to put a tribander up (an A3 I think) and wants to mount it vertically. He asked me what I thought ab
What does he hope to gain by mounting the tribander vertically? Mark N1UK G3ZZM _______________________________________________ _______________________________________________ TowerTalk mailing list
The only thing he is going to gain is being able to put something up that he can turn. He cannot go high and he has tree issues that prevent him from turning it if it is horizontal. _________________
If the trees are so close that it turns vertically but not horizontally, that will only last about 3 months, then he won't be able to turn it mounted vertically. Besides if the antenna is very low, m
Don't forget to subtract for the metal tower stuck between the elements. At least I'd think it would have a detrimental effect. Roger (K8RI) _______________________________________________ _________
Not true ... the vertical beam will always miss the "ground gain" and will lag the horizontal antenna by three to six dB. Over salt water the vertical beam will have more gain at lower take off angl
Funny you should mention this. Our club, Koolau Amateur Radio Club, KH6J, is about to construct our Field Day site this Friday with another local club, Emergency Amateur Radio Club. Featured among ou
-- Well, my original statement is not 100% true for all heights, and neither is yours. Here are some EZNEC numbers for a three element Yagi turned either vertically of horizontally. Height ___ Horz A
K4SAV generated some useful numbers - thank you. - - - - - Here are some EZNEC numbers for a three element Yagi turned either vertically of horizontally. Height ___ Horz Antenna ______ Vert Antenna _
Even at 20 meters, 150 feet or more is a bit out of reach for most people. However, your statement is correct at heights that begin to approach free space conditions (5 to 10 wavelength). With those
Ground losses for both antennas were included to the extent that EZNEC Sommerfield-Norton ground is accurate. At the heights used in these examples, that should be a good estimate. What is "real worl
You are correct, Ward. That info is only part of the whole story. Clearly as can be seen in my previous chart, the vertical has a lower take-off angle, but it is not clear how the gains compare at so