The only way to really know is to run the numbers for the location. I am blessed with a sloping foreground in most directions: some out to about 4 miles, some out to 14 miles, and the resulting radia
The verticals suffer more from poor ground conductivity especially at low radiation angles (Pseudo-Brewster angle etc.) so they seem even better in a good location, but the yagis and quads do better
IMHO quads very good antennas - they are very cost effective, they do hear a little better and are a little quieter, but, you should live in an area with no icing issues and have a tilt over crank up
IMHO the 34 and 36, if restored to original working order, are a much better choice that the "pro" models. 73 John N5CQ Actually, I was mistaken - it is a Mosely Classic 36. I went out and spread eve
The Chance anchors are widely used, but are usually put in by one of their installers, who sample the soil and twist the anchors in and have the equipment to confirm the calculated holding strength i
Try running as administrator if your normal user login does not have administrator privileges. 73 John N5CQ Runs just fine on my Windows 8.1/64 system(s). I don't remember needing to do anything spec
Ground conductivity is always important! If you have very poor soil conductivity, a vertical (or four or more of them) on silver plated copper disks a wavelength in radius still won't get out that we
I have done lots of HFTA modeling and have years of experience and thousands of hours listening to and switching combinations of stacked yagis on HF. Here are my (primarily W5 area based) stacking ru
You always want to use EHS for several feet near the tower (falling tools, antennas, etc.) and near the ground (grassfires, vandals, etc.). To be sure there are no issues with electrical interactions
A lot of the smaller installers use the screw in anchors (AB Chance, etc.) because you do not have to wait for concrete to cure. 73 John N5CQ Only two days to cure concrete! Barry, W5GN https://www.y
The C3 and C3S both had a very high performance to wind load ratio, and were good for 20+ years with no maintenance required. 73 John N5CQ IMHO for a high performance well built antenna the Force 12
I used HDR300s for years, setup with a 2:1 gears to turn rotating towers, including the add on limit switches. In this application antenna weight and balance did not matter. Inertia and holding torqu
Also there is an averaging area dimension for the map - I don't remember what it is - but any given soil in an area of less than that size, can vary quite a bit from the map values. 73 John N5CQ And
I concur. I have been involved in several big money 'where to build it' decision trees and the big two overarching factors were usually (1) how much uncertainty (time and chance of success) about get
I have had several stacked antenna systems since 1997 - a six stack of tri-banders, some three and two stacks of mono-banders, and a three stack of OWA's on 40. I have usually been able to switch all
I have only been on 6M for the last few years. I have one yagi at 195' and another at 65' (on two different towers), and often notice dramatic differences between the two, with the relative signal st
As I understand it, HFTA statistically does not account for sporadic E hops, so it's usefulness for 6M may be in question. I learned for USA domestic F2 propagation on 20-15-10 with my sloping foregr
This is the only easy web link I can find for some of Dick Weber's "yagis in the win"d analysis: http://www.eidxa.org/Newsletter/archived/1975-2000/EIDXA-1995-Summer.pdf 73 John N5CQ www.eidxa.org<ht
One lesson from hard experience: find out which covenants and restrictions are actually filed at the courthouse for the specific parcel you are interested in. Never depend on what a realtor or salesp
We used to use these for installing small wind turbines (2500 pounds and 8+ meter blades turning at 100+ rpm with significant projected area, see https://www.nrel.gov/docs/fy13osti/56500.pdf for deta