[PaQSO] NVIS

[Hank Greeb]

I' ve had GREAT performance from a dipole @ 60 to 70' on 80/40/20 
meters.  I try to find spots for portable operation which have 
"naturally occurring antenna supports" of this height spaced between 120 
and 150 feet apart, so that my dipole can fit between.  A lower antenna 
works, but when available, the higher antenna, on high ground, works the 
very best.

In choosing an operating location, I find that Peakbagger.com will list 
the peaks in a given county, and show them on a topographical map, 
usually with 10 feet contours.  It's frequently hard to get to the 
highest "peak" in a county, but it's easy to follow contours and get 
within a few feet of a high point with good height above average terrian.

72/73 de n8xx Hg
QRP >99.44% of the time

On 10/16/2015 10:57 AM, Herb Krumich via PaQSO wrote:
> Years ago I learned that an antenna on 80 meters will be an NVIS below 130 feet above ground. Same situation with 40 meters where a dipole or yagi should be up at least 70 feet.This was after I tried running an 80 meter dipole, ten feet off the ground. It does not work. Although the tree level was much higher.Does an NVIS antenna need to be in an open field ? Good question. On 80 meters, any dipole up 25-40 feet is a killer antenna for our contest.Throw some RF into the sky, you never know where it will land  Herb K2LNS