Sharing an antenna? School me.

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k9-cop

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OK so if I have for instance two identical UHF mobile radios can I use a T-coupler and run two mobile radios off of the same UHF quarter wave antenna?
 

n9mxq

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As long as neither transmits.. First time one does, the other will most likely go poof.

I wouldn't take the chance.
 

af5rn

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n9mxq said:
As long as neither transmits.. First time one does, the other will most likely go poof.
Yeah, you'll need a UHF duplexer, which both combines and isolates the signals so they do not interfere. Most duplexers you'll find at ham outlets are dual banders, which will not work.
 

k8mcn

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k9-cop said:
OK so if I have for instance two identical UHF mobile radios can I use a T-coupler and run two mobile radios off of the same UHF quarter wave antenna?
If you don't want to use them BOTH at the same time , just use a two position antenna switch.install the switch backwards, so that you end up with a jumper from each UHF rig going in to one side and the antenna hooked into the single side----then you can switch rigs to antenna at the flip of a switch--- I do this here to operate two different HF rigs-just label the switch and make sure it is in the correct position (hooked to the rig you are transmitting with).
But beware--you must make sure you throw the switch--if not you will be transmitting in to a dead short (if you have a switch that grounds the unused terminal)
 
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