Report was run with 20' and then 30' heights. Channels in question like WFLD (Chicago) actually report lower power/nm when going higher, what's up with that?
Sometimes broadcast waves tend to run closer to the ground. That isn't
usually the case but it does happen. I do not know why. The TV Fool
report I use as a "guide" and not a rigid tool. What is most important
is what works best for you! The only way to determine that is to "walk
the roof," with mast and antenna in hand and have another at the TV
to see what works and what does not. A signal meter on most TV's
is always a good guide...... A few feet in any direction or a few feet higher or lower can make all the difference!
Sometimes broadcast waves tend to run closer to the ground. That isn't
usually the case but it does happen. I do not know why. The TV Fool
report I use as a "guide" and not a rigid tool. What is most important
is what works best for you! The only way to determine that is to "walk
the roof," with mast and antenna in hand and have another at the TV
to see what works and what does not. A signal meter on most TV's
is always a good guide...... A few feet in any direction or a few feet higher or lower can make all the difference!
I will bet IT'S becuse the ground is damp frum rain or doo
Electricity loves moisture some ham radio operator 's
Be for CQ or Dxing will water the grass it improves your SIGNA!!!
I actually experienced this exact phenomenon. I had purchased an additional pole to raise the height of my antenna about 7-8 ft and actually lost signal.
Put it back down and made some directional tweaks and voila; signal was back. I played with this for a couple of hours at least because I just couldn't believe that the height was the variable that was affecting the signal. Pretty much ruled out everything else so my antenna stayed at the shorter height.