I'm thinking YES on this but, I wanted to be sure. I have a Heath HD-1234 coax switch. I want to connect two radios to one antenna. Is this ok? I have the manual and, it shows using two switches to connect multiple radios to multiple antennas. It is rated for 1000 watts. See attached photo. I'll connect the antenna to "C".
It's risky. Given the sensitivity of modern radios and the isolation on most of those switches, you could end up blowing out the front end on your receiver(s). Better to build a patch panel.
All the world’s a stage, but obviously the play is unrehearsed and everybody is ad-libbing his lines. Maybe that’s why it’s hard to tell if we’re living in a tragedy or a farce.
Ditto on the patch panel. Not enought isolation to keep harmful levels of rf from one radio getting into another.
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Boy, I'm glad you asked first. Imagine how mad you would've been
Like that post was...
Moving on, my posts are not helpful
The HD-1234 grounds all unselected SO-239's. As long as the switch is grounded, shouldn't he be okay?
Theoretically, yes, but it's a DC ground for lightning protection/static bleed-off and we all know that the behavior of AC at radio frequencies often does not conform to what one expects in a DC circuit. It might work just fine; on the other hand, it might not. IMHO, it's not worth risking the front end of a receiver.Originally Posted by kf0rt
Last edited by NQ6U; 12-27-2016 at 05:05 PM.
All the world’s a stage, but obviously the play is unrehearsed and everybody is ad-libbing his lines. Maybe that’s why it’s hard to tell if we’re living in a tragedy or a farce.
Good point, though I guess I've never seen a problem with it in practice. Best not to risk it.
And heya, Carlo!
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The one way you might safely get away with this - assuming the antenna is a multibander - is to use bandpass filters at the antenna connector of each transceiver, with a band-stop filter at each port of the switch assembly. The stop filters are tuned to the "opposite" frequency range, much like a set of duplexers in a repeater system.
If you substitute a power combiner and pass/stop filters, you could eliminate the switch altogether and use both radios at the same time...assuming different operating ranges for each.
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