Ok maybe I am just out of date but as a kid I grew up with the military using NVIS Dad was career Army and Infrantry. I was taught that NVIS was best for 1-8Mhz and was for bridging the gap between ground propagation and sky skywave propagation. I was always taught that as you went up in Freq. it became less and less viable. I even read research from about 1920-1940's where they used 10K+ watts and tested in various soil types and the ocean.
So the other day I was laughing at some youtube video's mostly out of the UK but a few where USA based talking about "better" skip DX with ones ground plane closer tot he Earth. I was taught that this is a wast as ground loss becasue your just heating up the ground. Same idea as to why mobiles antena systems have such high loss aka ground loss.
I have a dipole I made years ago for the rental property I was in before buying my current home. My current home is wrapped in steel siding not aluminum, not vinyl but thick heavy steel siding. My shingles are foil backed as well. I was going to use this in the attic until I could set up a tower but that will not work.
So I was wondering if anyone has tried NVIS with a dipole close to the earth with passive reflector or ground wires on the earth as well on 10,11 or 12 meter and what you thought?
What about some of these CB operators in the USA and UK of the opinion that a ground plane or even just a vertical dipole end feed or otherwise with out the ground plane like a GM, A99 or IM2000 close to the ground? It violates everything I was taught as a young man but well times change and yesterdays facts often become subject to modification latter on. I think the first thing I was taught as a kid about antennas was "Height Makes Might" the higher the better.
I did search google for NVIS and HF but did not find much related to my specific band and freq. range of interest it was mostly a review of what I was taught 30 year ago.
Also any particular favorite height and antenna types especially vertical. I had never thought about putting one antenna 50 foot or higher up and one insanely close to the ground what is it under 1/2 or under a 1/4 wave length above the ground???
Thanks for catching me up or even just pointing me in the direction of good information. It is preplexingly difficult to find anything relevant or concise as it relates to citizen band or even 10m on the internet. Since this topic is very much influenced by freq. once you get way above or way bellow the 30mhz cut off the relevance drops off quickly. Plus I am not running any external amplifier and most of the amateur accounts of using this form of propagation are always using 200 watts or more of power so again relevance. The other issue is using complex antenna systems that are huge often having 4 or more radials that are 75-150 feet in length and meant to be used by special forces on very low freq.'s and not to be permanently mounted but portable.
Again thanks for any help, information or personal observations. I have grown tired of lots of searching and lots of dead ends.
So the other day I was laughing at some youtube video's mostly out of the UK but a few where USA based talking about "better" skip DX with ones ground plane closer tot he Earth. I was taught that this is a wast as ground loss becasue your just heating up the ground. Same idea as to why mobiles antena systems have such high loss aka ground loss.
I have a dipole I made years ago for the rental property I was in before buying my current home. My current home is wrapped in steel siding not aluminum, not vinyl but thick heavy steel siding. My shingles are foil backed as well. I was going to use this in the attic until I could set up a tower but that will not work.
So I was wondering if anyone has tried NVIS with a dipole close to the earth with passive reflector or ground wires on the earth as well on 10,11 or 12 meter and what you thought?
What about some of these CB operators in the USA and UK of the opinion that a ground plane or even just a vertical dipole end feed or otherwise with out the ground plane like a GM, A99 or IM2000 close to the ground? It violates everything I was taught as a young man but well times change and yesterdays facts often become subject to modification latter on. I think the first thing I was taught as a kid about antennas was "Height Makes Might" the higher the better.
I did search google for NVIS and HF but did not find much related to my specific band and freq. range of interest it was mostly a review of what I was taught 30 year ago.
Also any particular favorite height and antenna types especially vertical. I had never thought about putting one antenna 50 foot or higher up and one insanely close to the ground what is it under 1/2 or under a 1/4 wave length above the ground???
Thanks for catching me up or even just pointing me in the direction of good information. It is preplexingly difficult to find anything relevant or concise as it relates to citizen band or even 10m on the internet. Since this topic is very much influenced by freq. once you get way above or way bellow the 30mhz cut off the relevance drops off quickly. Plus I am not running any external amplifier and most of the amateur accounts of using this form of propagation are always using 200 watts or more of power so again relevance. The other issue is using complex antenna systems that are huge often having 4 or more radials that are 75-150 feet in length and meant to be used by special forces on very low freq.'s and not to be permanently mounted but portable.
Again thanks for any help, information or personal observations. I have grown tired of lots of searching and lots of dead ends.
