My only concern is that the antenna is close to resonant on 30m, and a quarter wave of

line (about 20 feet or so) may step the impedance up to an inconvenient value. A quick

model suggests the SWR on 300 ohm line is only 4 : 1, so the maximum impedance you

would encounter is 1200 ohms. That's probably tolerable.

Here is one way you can check the values yourself:

W9CF has a handy yagi modelling applet you can run online here:

http://fermi.la.asu.edu/w9cf/yagipub/index.htmlCreate a single element yagi with a 50' element (using perhaps 25 segments for good

measure) and see what feedpoint impedance it gives you for each band.

Then you can stick the impedance into VK1OD's transmission line loss calculator here:

http://vk1od.net/calc/tl/tllc.phpfor various lengths of 300 ohm line and see what the resulting impedance is at the tuner.