Does radiation come mainly from the high-current portion of an antenna -- i.e., for a half-wave, from the center? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN
// The question is related to antenna efficiency. This applies to antennas that are used on small lots. cheers, , Earl - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored
// I used to think that the radiation mostly came from the current portion of an antenna. However, the University of California currently teaches that all parts contribute equally. Electro Magnetic
tnx, Paul. It seem that, like Sears' auto batteries, hamdom's old wives' tales Die Hard. cheers - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wir
elements field // It takes volts and amperes to make the E-field and it takes volts and amperes make the H-field. Eliminate one and EM radiation is none. I used to get involved in 40m daytime shooto
morning, // It would be nice if they made a dipmeter option for their analyzer that dipped. It would be nice if their 8877 amplifier had: 1. a tank that was designed by a person who understood skin-
// I got an SWR=1 to 1 result by matching a >1000-ohm half-wave curtain array to 50-ohms with an L-network. The delightsome thing about end-fed halfwaves is that they work well with even a minimal g
// A friend experimented with different top-hats on an 8' vertical to find out which one made the most field strength compared with no top-hat. There was virtually no difference in field strength. -
On HF/MF skywave, is a 58% increase in power out (2db) noticable at the Rx end? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wireless handles Roh
On HF/MF skywave, is a 58% increase in power out (2db) noticable at the Rx end? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wireless handles Roh
// On some lists (esp, Topband), Pollyanna-ish civility is not an option. Critiquing technoblather from pals of the moderator/censor ist absolut verboten. cheers - R. L. Measures, 805.386.3734,AG6K,
// At one time, an S-unit increase was defined as a doubling of received voltage -- i.e., a 6db increase. - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wirele
end? My guess is that for moonbounce, 2db would make the difference between being heard or not. However, in my double-blind test of 40m daytime skywave with normal QSB,, no one could see the differe
Do "you have to hear them to work them" in the 21st Century? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Tr
// I saw a demonstration on an antenna range which showed that a FW loop does not have both both horizontal and vertical components of either the E-field or the H-field. Cross polarization isolation
// I agree, Tim. cheers - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan towers, coax, hardline an
// 52" is over a MegaV in dry air. . // We used to have insulators on a local 66kV line that eventually became so noisy the line QRMed, AM radio, FM radio, the HF ham bands,TV, AND the power co.'s o
Another solution is to find out where the power company's radio repeaters are located and try to buy a home close to one. cheers - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List
Phillystrand guy cable is non-conductive, flexible, easy to work with, and it's made for guying radio towers. It's fairly strong because it's made with Aramid® fiber, which is also used in bulle
// I asked a QST Staffer about the technoblather that Newington prints. He essentially said that there are some revered gurus there who are above reproach, even when one is spreading Bandini. cheers