> Why do you believe that double shielded cable is
> necessary for an antenna run? What are you trying to
> keep the signal out of?
> Inter-cabling within the cabinet needs to be double
> shielded to prevent interaction between the TX and RX
> portions, but once those signals are merged at the
> output of the duplexer they are both on the same
> feedline anyway and double shielding is expensive and
> unnecessary.
Sometimes it is needed. While the signals are on the same cable after the
duplexer there is a great ammount of rejection by the duplexers. There is
several feet of coax between some duplexers and the receivers. It is this
point where the desense by the coax can hapen.
After the coax going to the antenna is a good distance a from the coax
going from the duplexer to the reciever there will be enough free space
loss there will not be any desense.
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