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Multiple Radios, Single Antenna

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Has anyone ever connected two same band (more or less) radios to the same antenna (not in a repeater configuration)?

I was thinking of a way to optimize antennas on a vehicle…using a notch duplexer. For instance, say I was wanting to run a dual band Ham setup along with a 450-470 MHz trunkable radio and notch out some separation between the two bands in order to run a single antenna. I'm really jus brain storming here but the idea sounds decent in theory at least.


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DisasterGuy

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What you describe really isn't practical (particularly considering one is trunked). You would need such a large number of pass/reject cans that it wouldn't be practical.
 
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I was just going off of something based off some notch duplexers I have that pass everything below the notch on the low side and pass everything above the notch on the high side. Only notches the 5 MHz between the two sets.

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mmckenna

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Issue is the loss associated with such filtering. It would be really easy to lose a fair amount of your signal in this set up. Usually a separate antenna with enough spacing is an easier, more reliable, and better solution.
 
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Thinking in terms of a single cab pickup…not to mention keeping 10m, 6m, 33 cm, and maybe 11m as well. So…space is slightly tight on that one.
 
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