[Amps] k9yc pdf

[Jim Brown]

On Tue,1/13/2015 4:03 AM, Jim Thomson wrote:
> This pdf is very well done..and a real eye opener.   It also assumes you
> are in the middle of a wheat field in Kansas.

Not really -- what I've tried to do is show what matters, the effects of 
height and ground on both horizontal and vertical antennas. Those graphs 
showing the value, in dB, of antenna height, on 80, 40, and 20M. Yes, it 
assumes "flatland", but not infinite real estate. If you have irregular 
terrain (I do), you'll also need to use HFTA to get a handle on antenna 
height. But it does answer the question, "If I could somehow rig a 40M 
dipole between trees or a tree and a building at 60 ft, how much better 
is that than at 30 ft?"

There are companion pieces about 160M antennas (mostly talks about 
ground systems), and another that asks (and answers) the question, "If I 
could put my HF vertical on my roof, should I?" The second one is 
specifically looking at 40-10M. k9yc.com/publish.htm