My question is why a 22 dBi antenna for only 1.5 miles? Less gain will not be nearly as sensitive to tower twist and bending in the wind etc. ----- Original Message ----- From: "rabbtux rabbtux" <[EMAIL PROTECTED]> To: "WISPA General List" <wireless@wispa.org> Sent: Sunday, March 09, 2008 8:31 PM Subject: [WISPA] Vertical alignment tips for antenna on pole or crank uptowers
> All, > > I have recently been doing more 5.8G links. The first challenge was > on a pole(15') mount with a 22dB grid antenna, link distance of 1.5 > miles, and one end 1000' higher than the other. It took quite a while > to get the vertical tilt adjusted. Looking at the down tilt from the > ground was quite deceptive. We finally got someone up a ladder (15') > and had them aim it down from the back of the grid. It becomes > clear from this experience that the only way your eyes can help with > this adjustment, is when they're behind the grid in its final > location! > > Now, I'm now looking at putting a 5.8 sector antenna on top of a 55' > crank up tower. We can't afford downtime for a day of crank up/down > fun with guesses in adjustments. Help! Any tips, links, or > trigonometry pointers would be appreciated! In fact any algiment tips > for antennas mounted out of reach would be appreciated. > > I'm finding our WISPA membership most helpful, thanks all! > > Marshall > Rabbit Meadows Technology > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
