"Anyone have any idea how far an Electric Fence buzz can travel.Appears to be coming from the NE but I have driven around in abt a 5 mile loop and cannot get a fix on it." == I've had plenty of elect
"An INV L has directivity in the direction opposite the horizontal section." == It's almost insignificant, though -- less than 2 dB "F/B" for an inverted-vee that is 67' vertical and 67' horizontal.
"For example, the Stew can be won from any thousand-mile radius densely populated area of amateurs by running QRP or QRPP. It is impossible to win the Stew from any area without a large surrounding r
"I have a 200 foot tower which is pretty much in the clear and is guyed with Phillystran at all points. It has a 5 element KLM 20 meter beam which of course has all elements insulated from the boom.
"The reflected energy(light, etc.) generated by the sun and reflected by the full moon back on to the dark ionosphere causes a slight ionization of the F layer." == What topbander needs more F-layer
Just received the following news from ARRL: "An FCC administrative law judge has agreed that the FCC should grant the General class Amateur Radio license application of Herb Schoenbohm--formerly KV4F
"Halfwave verticals are efficient because the feed-Z is so high [Typically >1k-ohm], so virtually any ground system's loss is relatively small." == I believe that this has been discussed before on th
"I now have an inverted vee hung at the top of my motorized US Tower 89' crank-up (the one that is rated at 30 square feet in a 50 mph wind). I know I should have a modeling program, but I don't, so
It occured to me that Jim, N7US may not be able to shunt feed his tower at a specific height above ground because it is a crank-up tower (and the tower may not be able to be fully telescoped due to i
"Why does it screw things up ?? I am curious, since running the cables inside my tower is not an option since the tower is kept down when I'm not QRV....it will go up and down many times a week. Just
"My question is: What is better for top, with non ideal ground/counterpoise (i normally park the motor home in good soil, and deploy 4 + quarter wave roof height radials). 1) 30 ft vertical linear lo
"With that in mind, I'd rate a linear loaded (helical loading) antenna dead last." == I consider a linear loaded antenna to be a conductor formed into a hairpin type of configuration, not a conductor
When I had about five Beverages, they all came to within 20 to 50 feet of my 160m towers. All of them had good F/B and F/S ratios, so there wasn't any apparent coupling to the towers and resultant de
"I want the feed point about 18-24" above the earth to avoid these problems... as opposed to 'right at earth'." == There are two ways I can think of to accomplish what you want: 1) Cut the coax shiel
Having been through several sunspot cycle peaks and valleys, the best ever 160m condx from here to Europe was the northern hemisphere winter of 1997-98. The worst ever condx to Europe have been every
Shorter radials in one direction does not affect the azimuth pattern of the vertical and does not noticeably cut down the efficiency of the vertical (as long as the other radials are of sufficient le
Hi, Luis, Others have commented that the transformer on the FT140-43 core results in anywhere from 3:1 SWR to 5:1 SWR. W7LR solved the problem with his by adding a capacitor in series with the 50-ohm