[Towertalk] Multiple Antennas on One Feed-line

[Pete Smith]

At 06:26 PM 10/17/02 -0500, Jeff Burns wrote:
>I am trying to avoid digging a new trench in the yard. So a control cable is
>out. If anyone has a design for a three-position switch that is controlled
>threw the coax that would work. It also must be good up to 150 MHz.

The design of a remote switch with up to 4 positions is easy -- the RF 
design may be harder.  For 3 positions, try +DC, -DC and no power, plus a 
couple of diodes and two DPDT relays.


73, Pete N4ZR
Sometimes a tower is just a tower