Alberto,
I used aircom + for a long time on this end. The only thing I don't like
about it is the air core and it is fairly easy to water in the line. I have
been replacing all of it with Times Microwave LMR-600 on my long runs. At
30 Mhz it has a atten. of
.421db/100ft. For the final run to the beam from the tower I use about 15
or so feet of RG-213 around the rotor to the beam. You could also use
LMR400, as it is about the same stuff. My 10 mtr beam is on a US Tower
MA550 rotating tower and I am still feeding it with Aircom. As long as I
take the bottom connector off every once in awhile and drain the water out
of the coax it works fine. I have a piece of LMR600 that I am going to
replace that with very soon. A friend of mine uses LMR 500 but his runs are
not as long as mine. A couple of my runs are over 300ft to the top of the
tower and I would not use anything less than LMR 600. If I could have
afforded it I would have used LMR 900 on that run.
Good luck
Dick K8ZTT
Franktown CO
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