Bruce is correct that Beverage antenna installation and maintenance brings on the risk of life changing Lyme disease. Lyme disease is present in many areas of the world, but particularly in the non-a
There is an excellent article in the July/August 2012 issue of QEX describing how the author improved the performance of a Beverage by breaking it into two in-line segments coupled by a pair of conve
An air gap using one to two inch diameter balls with only a one or two millimeter gap provides a nearly uniform field resulting in the fastest breakdown at repeatable and fairly breakdown voltages bu
This link shows the base of a typical AM broadcast tower, with two hard steel balls used as lightning protection. At kilowatt power levels its not unusual to use a credit card to set the gap. http://
Trailer hitch balls should work fine as a lightning arrestor. Typically a trailer hitch ball has spherical sides and a flat top. The two balls should be oriented so they the spherical surfaces are si
Array Solutions (WX0B) sells static drain chokes at much lower cost than AM broadcast equipment suppliers. http://www.arraysolutions.com/Products/staticsurgecoils.htm Or you can easily wind your own.
Hi Jim, Unfortunately there's no free lunch. The slope of the "gull wing" elevated radials shortens the effective height of the vertical radiator. To achieve resonance, the length of the vertical mus
Hi Nick, I was lucky to work Paul, 5X4F, during the late 1990s but there are many unmet needs for 5X on 160 meters. You will be very highly sought after. Verticals are consistently the most effective
Bob, If you have a choice of one or the other the choice is easy: the transmit 4-square as an excellent transmit array as well as an excellent receive array. Good luck! 73 Frank W3LPL -- Original mes
The correct URL is: www.qsl.net/k1fz/1925recording -- Original message -- _______________________________________________ Topband reflector - topband@contesting.com
Bryan, Galvanized chicken wire (wire mesh) makes a superb ground for Beverage terminations especially in your ideal (for Beverage antenna performance) dry rocky environment. A 20 or 30 foot length of
In the real world, receiving (or transmitting) problems are often caused by faults rather than by inadequate design. The most common problems are connectors and deteriorated coaxial cable caused by p
Frank, ZL3IX has the most sophisticated 160 meter remote receive site I'm aware of. Its at a very quiet rural ocean front farm. 73 Frank W3LPL -- Original message -- _________________________________
Hi Don, Very nice job, I've used similar methods to accurately track down power line noise at W3LPL. My power company is very responsive when I give them reliable RFI location information. I use a Ya
Hi Mike, You should enjoy much improved DX performance with an inverted-L and ground radials than you're having with your off center fed dipole (OFCD). I recommend you simply use an inverted L rather
Hi Paul, You would helpful a step attenuator, in 1 dB steps, to be a valuable addition to your tool bag. There are situations where it helps isolate to an individual pole. Its much more accurate than
Eddy, The 21 kHz spaced between peak probably originates in a switching power supply and the loud "whir-whir-whir" noise may be generated by a motor. The slow movement up and down the frequency may o
Wolf, The web page for the National Space Weather Prediction Center's Wang-Sheeley-Arge solar wind model displays predictions and observations of solar wind speed and the polarity of the interplaneta
Today I measured the difference in loss (dB per 100 ft) between solid copper (SC) center conductor RG-6 vs. copper clad steel (CCS) Quad-Core RG-6 coaxial cable. The difference is not significant unt
Hi Mike, Obviously I had computers on my mind... Yes, of course I meant to say quad-shield RG-6 CATV cable. I'll provide the manufacturers and part numbers in a subsequent e-mail, but its just typica