Hola Tom
BPF and stubs are all you'll need, unless you have two stations operating on
the same band. I have run two Orions with high power SO2R to a single F12
C31XR for several years without problem. 20m and 15m elements of the F12
are parallel to each other, in the same horizontal plane and only seperated
by around 30cm. You are unlikely to see a higher induced signal strength
than I do with this arrangement. I hear no x-band interference, except on
10m where the 2nd harmonic of 20m is audible & loud BUT with Orions I can
even work within 2 kHz of this without hearing it at all.
GL
Bob, 5B4AGN/P3F
----- Original Message -----
From: <cx7tt@4email.net>
To: <tentec@contesting.com>
Sent: Wednesday, January 10, 2007 12:51 PM
Subject: [TenTec] O II in hostile environment?
Hola,
I have been invited to bring my rig and participate at local big gun
station for ARRL cw; 2 150ft towers, 80ft and 60ft towers with big boy
antennas. My question is how do I keep the other station(s) RF from
'frying' the front end of the O II? I know W3NQN bandpass filters will
keep harmonics down and coaxial stubs help also but how do I prevent the
1.5kw signals from adjacent antennas from cooking the O II? Sri for what
may be dumb question with obvious answers.
73
Tom CX7TT
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