Wednesday, January 15, 2014

Near Vertical Incidence Skywave (NVIS) #ARRL #hamradio

Near Vertical Incidence Skywave (NVIS) is a propagation mode which uses high angle radiation to send signals almost straight up to be reflected back to Earth for very effective short to medium distance communications. This mode of operation makes it ideal for in-state communications during disasters or other emergency situations. The military has used NVIS techniques for decades to provide short haul communication with other units on the ground.


Oklahoma Section Emergency Coordinator

Amateur Radio Emergency Service

Follow me on Twitter @N7XYO

Are you putting up an NVIS antenna this year?

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