> The characteristic impedance of a folded dipole is 300 ohms. Depends on who you ask really. The impedance of what most people call a classic folded dipole is about 300 ohms. But measure the various dipoles by Decibel and Sinclair you'll probably find they are not all standard size dipoles.
What Decibel does to match their dipole arrays is nothing like the method used by Sinclair. cheers, skipp > 4 of them, fed in-phase, will present an impedance of 75 ohms at the > feedpoint of the phasing harness, which will present an acceptable > 1.5:1 SWR to a 50-ohm transmitter. As Nate mentioned, some > manufacturers build the phasing harness with different impedances of > coax to transform the antenna array's impedance to 50 ohms. > > As far as frequency goes, if you're saying that the length of an > element, from the center of the top bend to the center of the bottom > bend is 34 inches, it's definitely a high-band antenna. The larger > the element tubing diameter, the broader the frequency range the > antenna will cover, so you may get that to perform acceptably at 2 > meters. See the construction article on the Repeater Builder website > at www.repeater-builder.com/projects/exposeddipole.html - it's > pretty much the antenna you have. > > George, KA3HSW / WQGJ413 >
