On Fri, 02 Jul 2004 07:42:24 +0200, /* frank */
wrote:

I can install only a dipole of about 10 meters
(as inverted V).

Is there any project, any commercial antenna
of such length, that allow me to work all band
7 - 14 - 21 - 28 MHz ?

Thanks

If you can make it 11 meters long, about 33 feet, that should get you
14 thru 28 mhz, with the use of 450 ohm feedline and a manual tuner.
If you can stretch it to 51 feet, you can add 10 and 7 mhz.

bob
k5qwg