"/* frank */" wrote in message
...
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

Frank,
Any antenna you put up is not forever. So, start small. At this pont in the
sunspot cycle there is not much propagation on 10 & 15 m. A wire 10 m long
is resonant at very close to 14.2 MHz. Feed it in the center with 50 Ohm
coax, and get on 20 meters. As an inverted V, you should be able to trim the
SWR to well below 1.5:1.

Tam/WB2TT