The G5RV matching section method will work for a reduced length single-band folded dipole. For instance, EZNEC sez a ~54 foot long folded dipole (40 feet high) fed with ~24 feet of 450 ohm ladder-line will yield a 50 ohm resistive impedance on 40m looking into the 24 foot section of ladder-line, i.e. no tuner required. This kills two birds with one stone. It shortens the 40m folded dipole from the full-size 66 feet to ~54 feet (somewhat like a G5RV) AND provides the ~300 ohm to 50 ohm impedance transformation needed for a full-size folded dipole fed with ladder-line. Of course, a 1:1 current-choke-balun needs to be installed at the ladder-line to coax junction. The theory is to reduce the length of the full size folded folded dipole until the SWR on the 450 ohm ladder-line is 9:1. Since 450/9=50 ohms at a current maximum point, all we have to do is locate the current maximum point, install a 1:1 choke, and run 50 ohm coax directly to the transmitter with no tuner required. This same approach would work with 300 ohm line by causing an SWR of 6:1 on the 300 ohm line, i.e. 300/6=50 ohms. For 300 ohm line, the folded dipole would be ~57.5 feet long and the 300 ohm line would be ~22.4 feet long, according to EZNEC. The folded dipole could be made even shorter by using 600 ohm open-wire for the matching section by causing a 12:1 SWR, i.e. 600/12=50 ohms. The 40m folded dipole becomes ~51 feet long (G5RV length) and the 500 ohm matching section is ~26.5 feet long (close to the length of the G5RV matching section). I will turn this posting into an article and post it on my web page. For 450 ohm ladder-line on other bands, the formula is dipole length = 390/f, 450 ohm ladder-line matching section length = 172/f. Here is the EZNEC file: http://www.w5dxp.com/40mFDt.EZ EZNEC sez the short 40m folded dipole will also work on 30m, 12m, and 10m with an antenna tuner.