What kind of splitter or multicoupler are you using? If it's just one of those cheap BNC splitters you are experiencing signal loss I'm sure. I don't know for sure if that is what may be going on with the radio but it's a likely candidate. If you're using a multicoupler that is a good one you shouldn't experience any signal loss.
It could also be that the sensitivity of one of the radios is better than the other. Unfortunately, that happens with all production line items when it comes to radios. It's not always a drastic difference but unfortunately identical radios don't always have the same sensitivity or selectivity.
I'm trying to move some radios up to my living room area from my radio room. I spent $200, $185 plus shipping, to get a new Stridsberg 4-port multicoupler. That gives me the ability to run one antenna to it, have it amplified by 6db, and then run it to four different radios. They make them in 2-port versions also which are cheaper priced. They are a superb company with a superb product and this is the third multicoupler I've bought from them sense 2002. It's not because any of them have gone bad, it's just because I needed more. And they have a lifetime warranty if something goes wrong with them. But they work wonderfully and allow you to hook up multiple radios 21 antenna without any signal loss.
One thing you might try is using the antenna feed coming in and just run it to one radio at a time. I know that makes it impossible to do the side by side comparison. But if you have a busy channel with a lot of traffic you can pretty easily compare each scanner hooked up to the same antenna I just quickly changing which radio you put it on. Of course you're comparing them separately but it'll give you a good idea if whatever you're using as the splitter is causing signal loss to one of the radios.
Brian (COMMSCAN)
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