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A Horizontal Loop will pickup less vertically polarized atmospheric noise. I
am very satisfied with my 480 ft loop that is up 35 ft. For receive only, an ATU would not be necessary, but it will improve the signal strength at some frequencies. My feedline is open line from the corner of the loop to the earth where there is a 1:1 current type balun. I connect the shield of the coax to a 8 ft ground rod. If your area is prone to lightning, I would install a polyphazer. The coax runs underground to the shack. The coax is only connected to the rig when I am actually using the antenna. This reconfiguration is relatively inexpensive. Go for it and compare the results. Joe O, KI5FJ "Walter" wrote in message om... Should I run a Sky-wire loop? I currently have a dipole hung by two trees about 30 feet off the ground. I would replace the dipole and run the Skywire loop off the same trees, along with two more trees at the same height as the current dipole. This antenna would only be used for receiving, and never for transmitting, the same for the dipole. My question is, does anybody think it will make enough of a difference over the dipole to warrant running it? I would also like to know what your views are on "grounding" either my current dipole, or the Sky-wire. Currently, I have the coax center wire soldered onto one end of the dipole, and the braid soldered onto the other end. I was told that I should also ground the braid before it comes into the house and into the radio. I do have a ground wire attached to GND screw on the back of the radio, going outside to a piece of copper pipe pounded into the ground. Is this enough, or do I need to also ground the braid, and if so, how? Will grounding help my reception, or decrease the noise on the line? Thanks. |
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