While real world construction can modify results, and there are well-known noise performance and ease of construction differences between quads and yagis, comparing the two in idealized circumstances
Stacking of dissimilar tribanders is problematic. Your 30 foot spacing should be left alone. Practical considerations around guy wires will govern where the antennas go. Unless all guys are Phillystr
A line often heard around here: More antennas are better. Having a pair of tri-banders on the same tower is a fairly common strategy. Although combination gain is a consideration, it is not the only
A two element 40 meter "shorty forty" at 70 feet and up is a fixture among contesters that can't put up the monsters. Suggest to any one of them that they should replace it with a four-square and see
Just for clarity, what you described is not a 4-square in the ordinary sense. The current maximum in your conductors is many feet off the ground. (How high was the center of the lazy vee dipoles?) A
The equivalence is easier to explain with the centers high. But... The ground reflection gain (or lack of it) normally quoted when analyzing this situation is only really in play to the specified db
I don't introduce another variable in trying to understand why a particular ham gets equal performance out of a lazy V 4 square and a shorty forty. The variables are all there, in action. All that va
You probably have an old call sign or alias address at QTH.NET or some such that is still subscribed to the reflectors, and is forwarding to you. In effect double subscribed. reflector
It will be ERP, at the antenna height, and directed at the horizon. There is a classical music radio station near Raleigh, WCPE. It broadcasts on 89.7. The antenna is up a ~1200 foot tower. It broadc
The only issue with placing a "permanent" extension to the tower and up is ground, and ground fault protection. Wiring AC at the tower follows the same rules as putting power out at a swimming pool a
Unfortunately there is no kw level 96 ohm coax. What you need is the alternate runs transformer formula, to match each incoming line to 100 ohms zero reactance. The formula gives you low z, run of hi
Neither, and both... Assuming, since you live in NJ, that it's not the SW you are worried about with a dipole on EU, that the direction in question is to the NW. Sloping the dipole down toward the we
I have heard of this kind of noise coming from a power-line MOV that needs to be replaced. That means getting into the TV circuitry, however. GL & 73, Guy. Poway, for ZL7C about 5 be act from my
A number that will reduce interaction substantially is 1/2 wave worth of philly on the LOWEST frequency in use on top of the tower. Others may tell you that going all philly except for the last 12 fe
One of my favorites is an antifreeze bottle about 3/4 full of water, with a tiny hole in the cap, tied by the handle. About 6-7 pounds. Fill it full and it cracks the plastic when it freezes (unless
No water jugs and no bleach jugs, which can be pretty flimsy. ANTIFREEZE jugs. And available in black if you get certain brands. Someone posted about not being enough weight to haul up coax. True, bu
As has been noted here many times, the most dangerous time to climb a tower is taking it down. Especially so old towers. The old joke about the best way to remove an old tower is with a hacksaw, only
Modeling shows a minor bulge away from the horizontal portion, both used as a 1/4 wave and used as a 1/2 wave. But not enough to justify how one orients it. Helpful circumstances for stringing it up
Without going into the math, however correct or incorrect it may be, the problem with using the math at all is that the actual velocity factor and characteristic impedance of a given piece of coax va