N.V.I.S. stands for Near Vertical Incidence Skywave. It is a propagation mode that allows for communication between stations at short to medium distances, typically between 0 to 300 miles. Ed Fong, WB6IQN, is an expert on N.V.I.S. propagation and shares his knowledge on the topic in this episode. He explains the theory behind N.V.I.S. and how it can be practically applied in everyday use as well as in emergency communication situations. In addition to discussing N.V.I.S., Ed also shares information about his popular J-Pole antennas, including Dual-Band roll-ups and Tri-Band verticals, which have helped many hams get on the air over the years.
You can find Eds’ contact info here: Ed’s Antennas
You can purchase his antennae here: antennas_iqn Ebay Store
Article from QST: ARRL /DBJ-1
John Miklor: Review
To Learn More about N.V.I.S check into some of the following articles:
Patricia Gibbons – WA6UBE WHAT IS NVIS?
Wikipedia – Near Vertical Incidence Skywave
DX Engineering – Practical Guide to Emer or Temp Comm (PDF)
ARRL.org – NVIS
Put up a low antenna KK7X0 – ARRL Link PDF
Thanks for listening and supporting the show
73 Y’all
Cale/K4CDN
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I was listening to the podcast on the way to work and said, “I gotta git me one of them Ed Fong antennas.” The Ebay site said there were only ten left, so I immediately pushed the purchase button, but it wouldn’t let me buy the accompanying 50ft of RG8X. I quickly looked back at the antenna, and it said to call a number to request the cable. Now, it’s 7:15 am in New Orleans, and this scratchy voice answers on like the fourth ring. It was ED FONG, and I woke him up at 5 in the morning! Ugh, very embarrassing. He was nice about it though Sorry.
From Youtube user haskellnj
“This is probably one of the best detailed descriptions of NVIS! Where else did you hear it should only be just off the ground? Kudos to 360!”
I liked the mirror analogy.