Moxon's book would indicate that verticals on a slope are at a disadvantage as the ground reflection (gain) is in the wrong direction. You could possibly model the verticals over and extensive wire
Tom is confusing Faraday shield with Electrostatic shield and whole reasoning that the grounded shield of small loop antenna is THE antenna is all wrong. Wire loops inside the electrostatic shield ar
That is true (by carefull construction and paying attention to symmetry, deep nulls are achievable), but also in a case when you have local, within fractions of wavelength distance from RX antenna, a
Yes, there was a number of mobile antenna shootouts, when various configurations and ways of loading were tested and field strength measured. W5DXP had some tabulated results I believe on mobile refl
YES Raoul, the shielded or coax loop is providing electrostatic field shielding from the near by interference by its virtue of capacitance of the shield to the ground. Shield is a shield and NOT an
Really low band antennas are either LF BC stations, few in EU as Long Wave band, or some submarine TX. Yuri Blanarovich, K3BU _______________________________________________ _________________________
(A) Bringing the antenna to resonance with the loading section, and then matching to the line with the L-network? Or, (B) Matching the non-resonant antenna directly with the L-network, omitting the
radials per antenna, and these are 20 feet high and parallel to the ground. John, ON4UN, claims I now have a great dummy load on 160, hi. But its working for me. Soil conditions undoubtedly have some
I will be giving presentation at the Boxboro Convention on Saturday August 26 at 12:00 p.m. Subject: Building Contest Super Station N2EE, NT1E Word about Nikola Tesla and Tesla Radioclub. New locatio
Tesla RC N2EE/NT1E is hosting tour of its new home at 83 Bayview Ave., Bayville, NJ 08721 (near Toms River) on Sunday, August 27 at 2:00 p.m. especially for Topbanders with Yuri, K3BU and Wally, W8LR
I will second that! What it does, it places the "perfect ground" in particular direction, which helps efficiency by minimising ground loses and pulls the lobe down close to horizon and extends it (mo
Run as much as you can on the perifery of your property. I did that, with "Dog Loop" antenna OG, originally intended as a invisible dog RF fence, but by the time I got it down, dog was smart and did
I don't think you "waste radiation" with L top loading. You simply add horizontal component and polarization to your signal, which could be beneficial on transmit, if you want to cover near and far
Top Band Contest records have been updated, including 2006 CQ WW 160 m Contest. Please check it out at http://members.aol.com/k3bu/160Records.htm Congratulations to all the new record setters! If the
center conductor is, I think, #26 wire. It has polyethylene insulation. It is available at Digikey.com. RG-178 or RG-179 are better (lighter, stronger) but run about $1 a foot. They are Teflon cable
Howdy TopBanders! Top Band records have been updated with recent CQ WPX SSB 2006 results. http://members.aol.com/k3bu/WPXRecords.htm Congrats to new record holders: LP N.America VE3MGY QRP World LY5A
Depends on the propagation and prevailing angles. Sometimes the higher angles work, sometimes low angles prevail and the long Beverages do wonders. Staggered Beverages narrow the horizontal lobe, to
Blank statement not valid and overturned by reality. Long wire, aka Beverage on the ground works, it has lower signal levels but it collects RF signals. Done it, have run stealth Beverage on the str
IS So! Using EZNEC file example of staggered Beverages from W8JI web site, they show 79.1 deg horizontal beamwidth at 35 deg elevation max angle, gain -14.9 dB F/B 15.6 dB Removing one Beverage, the
One has to realize the properties of the long Beverages, they lower the vertical angle and narrow the horizontal beamwidth. For example (according to EZNEC) going from 500 ft Beverage to 2000 ft, V