Try 2 or 3 rabbit-ear antennas. Easy to adjust, etc - up in the attic.
use 300-ohm cable (its low loss).
use splitters to fan-out the 300-ohm cable from the radio to the several
antennas.
If this works, please apply for a patent in my name and copyright the
instructions.

:-)

"EpsilonRho" wrote in message
...
I live in a area where the radio FM signals from various broadcasts are
quite weakly and coming from different directions. I was thinking to put
on
my roof an omnidirectional vertical coaxial FM antenna (two elements of
1/4
wavelength), but I think that the losses through the coax cable could be
substantial. In order to alleviate this problem, I could put an in-line
amplifier just under the antenna. As an alternative, would be possible to
install multiple vertical coaxial antennas, perhaps 3 of them, forming a
triangle and connect them in parallel? But by doing, the characteristic
impedance would drop by a factor of three. Is perhaps a three way splitter
more suitable to maintain the correct output impedance? At what distance
should I install the antennas from each other to assure
omnidirectionality?
I am not very knowledgeable about antennas, having just a degree in power
generation.
Many thanks for you help & advice.
Gene