Mike, When I was an AM radio broadcast engineer in the 60s & 70s, we used a copper screen for the first 20' to 50' around the tower base and silver soldered all the 1/4 wavelength radials to the common point straps and several places along the screen. This was in Florida with sandy soil. I seemed to remember from my 1st Phone exam that 120 radials were required. 73 George AI4VZ
On Mon, Jan 17, 2022 at 11:23 AM Mike Fatchett <[email protected]> wrote: > A well known 9 lander lid uses chicken wire for his 160 antenna and it > works very very well. I am not sure what effect crossing the wires > has. Has anyone done any real testing of this or is it just theory or a > wives tale? Did he stumble upon the holy grail of radials? > > Most of the results of the radial field are from the first 50 percent or > so. You do not necessarily have to have 66 ft radials on 80m to work > and get out. Put out as many as you can as long as you can and shorter > radials are fine too. > > W0MU > > On 1/16/2022 2:15 PM, Dave Fugleberg wrote: > > This discussion reminded me of a question that I’ve often wondered about > > but have never asked. > > I have read that when laying out radials on or under the ground, one > should > > be careful to ensure that they radiate out from a central point without > > ever crossing one another. > > > > I have also read about this idea of using galvanized mesh in place of a > > traditional radial field. In a mesh, the conductors not only cross, but > are > > bonded together at every crossing. > > > > So, is there actually an issue if a couple radials happen to cross each > > other? > > > > Not that one would do so on purpose, but when adding radials to a system > > where the existing ones are no longer visible, it could easily happen… > > > > Curious minds want to know. > > > > > > On Sun, Jan 16, 2022 at 2:55 PM Jim Brown <[email protected]> > wrote: > > > >> On 1/16/2022 12:19 PM, Mike Markowski wrote: > >>> A construction site had left over galvanized mesh rolls that I bought > at > >>> great discount. I unrolled them symmetrically about my then soon-to-be > >>> installed vertical. Easier than individual for lazy hams like me:-) > and > >>> 2nd qso at 100W from Pennsylvania was Cambodia! That qso made my day > and > >>> then some. > >> Rob Sherwood, KC0B, published on this in the May 1977 edition of "Ham > >> Radio," and I included his ideas in this talk. > >> > >> http://k9yc.com/160MPacificon.pdf > >> > >> 73, Jim K9YC > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:[email protected] > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> Message delivered to [email protected] > >> > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[email protected] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to [email protected] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
