I don't know how much bandwidth you could get with coaxial quarterwave transformer (say, two quarterwave lengths of coax in parallel to transform 12 Ohm of an inverted L to 50 Ohm)? In previous life I was used to use quarterwave 75 Ohm cable to broaden bandwith of 80m dipole(s)...
73 Mirko, S57AD 2012/5/7 Rob Stampfli <[email protected]> > Thanks, gentlemen (Eddy, K8GG, ZR, Roy, Herb, et. al.), for all the > feedback on this. So, it seems it's pretty much what I expected -- > if you tune an antenna for better results on one frequency, you > detract from its operation on another. Maybe one of these days I'll > get around to playing around with that 3/8 wavelength L anyway... > > Rob / KD8WK > > On Mon, May 07, 2012 at 03:22:19PM -0400, Herb Schoenbohm wrote: > > Another rule for this is "the lower the Q of the matching network the > > greater the bandwidth." > > > > Herb Schoenbohm, KV4FZ > > > > On 5/7/2012 1:48 PM, Roy wrote: > > > If I were to extend my 1/4-wave inverted-L to a 3/8-wave L, and tune > > > out the inductance with a fixed capacitor at the base, what would this > > > do to the broadbandedness of the antenna? > > > > > > There is an old basic principle to remember about this, "The fewer the > > > components in general, the broader the bandwidth." > > > > > > 73, Roy K6XK > > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
