1) Don't exceed 200 feet above ground unless your tower is lit, registered etc ... a DB-224E on top of a 180 foot tower will exceed 200 feet ...
2) Dipoles rule ... they are the best for weather and wind resistance (and don't forget about lightning!). A dipole is likely to last a lot longer than a station master ... although they don't perform as well while the elements are under an ice coating. Get dipoles for your mountain area ... 3) Don't worry about patterns ... they are not on top of each other ... you have almost an entire wavelength even on 2 meters. you'll be fine. If you were using multi-band or multiple antennas on the same band, then I would worry more. Hope this helps ... I am also a northern "mountain" top repeater owner here in CT. James WJ1D n2len wrote: > I was given the opportunity of placing 3 repeater antennas at the very top of > a 180 foot cellphone monopole tower. A horizontal arm mounted on the top of > the monopole will allow the mounting of my 3 repeater antennas. Horizontal > separation should be no less than 6 feet apart from each other. > > Here are my 2 questions: > > We will be mounting 2 meter, 220, and a 440 repeater antennas. > > 1: > What do you recommend between a choice of either RFS or Telewave Superstation > Master Type or DB224E Dipole type for top mounting? > > Pros and Cons of each. I heard many stories about cracking for both. Wind > load... > These antennas will be top mounted! > Located in the Catskill Mtns, Snow & Ice are problems. High winds etc.... > > 2: What do you feel about the pattern/reflection with having 3 verticals atop > next to each other spaced say 6 feet apart? > > Thank you for your input: > Len N2LEN >
