To <not always> I'd add: *almost never*. Laryn K8TVZ
--- In Repeater-Builder@yahoogroups.com, Barry <[EMAIL PROTECTED]> wrote: > > > Not always > > To: Repeater-Builder@yahoogroups.com > From: [EMAIL PROTECTED] > Date: Sun, 10 Aug 2008 23:19:52 -0500 > Subject: RE: [Repeater-Builder] Height Gain figure > So if the antenna is already at 1000 feet > height and it is moved up another 100 feet to 1100 feet, you are going to > increase the range by 14 miles?? > > > > 73 > > Gary K4FMX > > > > > > > > > > > > > > > > From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > > Sent: Sunday, August 10, 2008 3:20 > AM > > To: Repeater-Builder@yahoogroups.com > > Subject: Re: [Repeater-Builder] > Height Gain figure > > > > > > > > It is interesting to see the many responses, none of which I have > problems with, but all seem to skirt your question. If you are moving the > site any distance from the present site, then it is very true that these > variables must be considered. If you are moving only a very short > distance from your current site, then, I believe what you are looking > for is a simple formula to givr a close guess of what to expect. I > think you will find that should yout take the square root of the change in > height, in this case, the square root of 100 which is 10, and mulitply that by > the square root of 2, which is 1.414, you will come up with an approximattion > of 14 or so miles improvement. Again, as others have pointed out, many > variables inter into the equasion, but then, the bumble bee can not fly either. > . . .. > > > > > > > > > > > > Hope this helps. > > > > > > 73 and cheers, > > > > > > Gene, W4FWG > > > > > > ************ > > > > > > -------------- Original > message from Chuck Kimball <[EMAIL PROTECTED]>: -------------- > > > > At one > point I had read a number for figuring out the gain you get by > > increasing the height. Of course at the moment I'm unable to locate that. > > > > ie: If I move the same antenna (VHF 2m) up a hill and gain 100' of > > elevation, but it costs me the line loss (300'), did I really gain > > anything. > > I'll figure in the line loss, and adjust the hardline to minimize the > > loss, but I'm looking for the number to compare how much gain (in db) > > did I get with the increased height. > > > > So... Anyone know what number is for gain as a function of height? or > > know a reference I can look up. > > > > Thanks > > Chuck > > n0nhj > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _________________________________________________________________ > Meet singles near you. Try ninemsn dating now! > http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fdating%2Eninemsn%2Ecom%2Eau%2Fchannel%2Findex%2Easpx%3Ftrackingid%3D1046247&_t=773166080&_r=WL_TAGLINE&_m=EXT >
