Originally Posted by eastrocks400
I had it originally for TV, but its rated for UHF and VHF, so it's not a problem. And I have had many other problems with it, such as it not receiving many trunked system properly, doesn't receive as well as some other scanners (just for some odd reason), and it breaks up in the car. Anyway, I'll let you guys know the fix when it happens.
You should never hookup a ham transceiver with a splitter (coupler) like that. They are not designed for transmit for one, for two, they are 75 ohm and will present a very bad SWR to your ham rig. That will likely destroy the finals in the ham rig (as another poster pointed out) if you transmit which you have. And for three - ANY other radios hooked to that same coupler are at risk of being destroyed if you transmit with the ham rig. It also does NOT matter if the scanners are turned off. The antenna inputs are still live to the coupler and the full RF from the ham rig.
Just because it says "UHF and VHF" does not mean diddly squat. That is for TV reception period. They can be used in a recieve only application but they do not offer very good port to port isolation and one scanner will liklely interfere with the other plus the performance suffers with this type of "coupler".
My advice is to lose that coupler for the ham rig. Get a dedicated antenna designed for the ham rigs frequency range(s) and then use the coupler with a scanner antenna for the scanners only if you need multiple scanners otherwise throw the coupler away before you do more damage.
What you are doing now is really no different than hooking the coax directly from the ham rig to the scanners antenna jack and when you transmit, poof, that is all she wrote for one or both radios.