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Don't forget to check out our e-bay store 10-80 meter Stealth Slinky Dipole with a built in air-wound *coax choke balun and a 50" roll of RG-8X coax A Quality Air-Wound Coax Choke Balun has been added to the antenna at no extra charge to you! We've done research on which balun should work best for the Slinky Dipole and based on that research, this Choke Balun has been added to this antenna to help users fight off common noise associated with large outside antennas and also to give you a more balanced radiation pattern! The Air-wound Coax Choke Balun also prevents your coax feedline from radiating spurious signals and helps transfer all the RF to the antenna thereby reducing Radio Frequency and Television Interferendce (TFI & TVI). The Air-Wound Coax Choke Balun (like all of our antennas) is hand made by our All Senior Citizen/All Licensed Ham Radio Operator staff. Of course, all of the electrical connections are soldered using only the finest rosin core electrical solder. This antenna comes with an air-wound coax choke balun that has an SO-239 connector on the other end for easy connection to the 50 feet of RG-8X coax which has PL-259 Connectors on each end. ¥ Every Slinky Dipole also comes with three pages of instructions and facts covering installation, hints on use,SWR, and how to have fun with your new antenna. The antenna works great without a tuner on 40 thru 6 meters and even on 2 meters and also works 80 with a tuner. A Slinky is a coil made of conducting material and it is already resonant at several frequencies. A Slinky has some strange mechanical properties and it has some interesting electrical properties too especially at radio frequencies that we all use. A standard Slinky coil resonates as a quarter wave between 7 and 8 MHz when it is stretched to lengths between 5 and 15 feet. To tune the Slinky within that range all you need to do is stretch the coil to approximate size, then expand or contract it to reach the resonant frequency you're looking for. In some installation a tuner may be needed ofr some of the bands. We've been making Various Slinky Antennas since 1965! click here to see our tech notes; Slinky Dipole/Inverted Vee Antennas for Ham Radio© A balun's purpose is to allow connecting a BALanced load (e.g., a dipole) to an UNbalanced line such as coax, thus the name, Balun. In transmitting antennas, this is accomplished by presenting a high impedance (resistance), to RF currents flowing outside the coax shield. This forces currents in each side of a driven elements to be equal. This is especially important in the Slinky Dipole antenna because it assures that the dipole, and not the feed line, is doing the radiating! When you connect center fed antennas, like dipoles, V's, triangles, yagis, rhombics, loops and so on, to coaxial cable, unless care is taken, you can easily end up with feed line radiation. Not only can the loss in power be quite significant, but the radiation characteristics of the antenna system will also be seriously compromised. This simple 1:1 coax choke balun is composed of numerous turns of the coax feed wrapped around a plastic core . Since we started selling antennas on e-bay last spring, we've sold more than 2500 antennas, each one carefully hand made and tested. That practice continues today! We're not a giant company, just a couple of old folks who started making antennas in our garage to try and help further the Radio Hobby we've enjoyed for more than 50 years. We'd rather be making more antennas than spending our time reading all those e-mails every night! WE ARE THE WORLD'S #1 SELLER OF SLINKY ANTENNAS! (10-80 meter slinky hf dipole antenna w-balun +50'rg-8X was posted and is owned by: Maryellen Mack) |
M.mack@chicagopartsnetwork.com (Maryellen Mack) for more information.
