Are you saying there is no DC connection between the center pin of the coax connector and *ground*? The "ring" (a single turn coil) should have connections to both the vertical (whip) and the ground
One correction here ... the basic AR-2 will resonate as a 1/4 or 3/4 wave vertical. The ARX-2 (with the added stub and 1/2 wave) will not show any well defined resonance other than as a loaded 15 or
They give the designer additional degrees of freedom with which to control input impedance and side lobe structure. Side lobes can be addressed with level/phase of radiation from the "sides" (bent ba
The Moxon is a good example of the effect of bent elements - gain and front to back levels are more typical of a three element yagi but front to side is not as good. One has a two element yagi in whi
"Drooping" ends result in a small amount of vertically polarized radiation. Horizontally folded (or bent) elements result in some degree of radiation at 90 degrees (think crossed dipoles) to the mai
If these antennas have been so extensively modeled and optimized, there should be a clear comparison available that would tell us whether the difference warrants the hype. Do just a little literature
When the information is in the public domain it is not the job of any vendor to regurgitate it in the form and place you want. Just because an antenna manufacturer chooses not to reprint Kraus, et. a
You're too young to remember the absurd claims that Gotham used to make for their antennas, or for that matter the craziness that most amateur antenna manufacturers used to inflict on us in the 80s a
Well, if you're too lazy to check advertising claims, you will buy Mosley antennas with their overstated gain and dead last performance in the W0AX/K7LXC tribander tests. Of course you would never kn
Why? The RCV-8 manual *with schematics* is already available on the Ameritron web site (www.ameritron.com). The RCS8V does, in fact, use a DP5T switch - one pole switches power to the relays whilst
Those who own LPs don't talk about calling the crane to remove the antenna after losing elements due to metal fatigue and they don't admit that performance (gain and pattern) is equivalent to a two
One correction - the added "fixed" six meter element is a first director. On six meters, the "three element" SteppIR is four elements on a 16 foot boom. The SteppIR performance is certainly competiti
I already had a 5 element M Squared 6 meter beam, so I didn't add the 6 meter DIRECTOR (sorry) to my SteppIR. Whenever I did a comparison between the two antennas the 5 element monoband beam was noti
You need a common mode choke on the feedline - probably along with grounding the shield of the feedline where it enters the shack. See K9YC's extensive information on common mode chokes. As it is, yo
No, it looks like long term arcing. 73, ... Joe, W4TV This is for my 75m dipole . As one can see 75 m is not working ! Do you think it is from lightning? It is from a W9INN 40 75 160 m antenna. I ne
The pictures are clearly of long term charring - not short term "flashing". The damage is much more like running extended AM or RTTY at power levels above the design specification of the antenna or o
David, They make them in 2.75" to 0.625" tubing sizes. You want 7/8"? http://www.dxengineering.com/parts/dxe-ecls-087 The entire list is here: <http://www.dxengineering.com/search/department/clamps-a
You still need to provide +12V to switch the relays plus power for the WiFi receivers *and* protect the sensitive receivers located at the base bottom of a huge lightning rod from damage from both wa
The alternative is to take a page from the bigger broadcast tower installations and encase the guy rods in concrete. 73, ... Joe, W4TV On 6/18/2013 9:13 PM, Dick Green WC1M wrote: Any anchor that's
The crossover point between a dipole and vertical is actually about 0.4 wavelength. A Yagi will have a slight advantage over a dipole because of the slightly reduced (ca. 3 dB) radiation up/down. Ve