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Don't forget to check all the other antennas in our e-bay store 6-160 meter Stealth Dipole made with 4 Slinkies and a built in coax choke balun NEW FEATURE: 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. The antenna works great without a tuner on 80 thru 6 meters and even on 2 meters and works great on 160 with an antenna tuner and in some installations without an antenna tuner. A Slinky has some strange mechanical properties and it has some interesting electrical properties too especially at radio frequencies that we all use. A Slinky is a coil made of conducting material and it is already resonant at several frequencies. 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. We suggest you set up this antenna with a minimum of 30 feet on each side for the best results, but you can have lots of fun experimenting with this antenna as a dipole, inverted L, inverted Vee and a Vertical too. Included with the antenna are 3 pages of Slinky antenna information and ideas. This antenna and every antenna we sell is made 100% by hand by retired senior citizens/40+ year electronics technicians who have been licensed hams for no less than 35 years each! They have all built their own Ham rigs, numerous HF,VHF and UHF antennas, their own computing systems and other electronic equipment! * 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 . WE ARE THE WORLD'S #1 SELLER OF SLINKY ANTENNAS! 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. (160 meter 4 slinky hf dx ham dipole antenna w/balun was posted and is owned by: Steven Vega) |
Steven_vega@chicagopartsnetwork.com (Steven Vega) for more information.
