coax question

Not sure what you mean here.... Why not? most people hook both antenna's up and set SWR that away... The suggested way is to do each antenna separate then together.. So, no matter what you should know what you SWR is far as your meter goes being a dual set up or not....

Replace it, many reasons why like water can get past the tape, or you have more damage to the coax then what you visibly can see ext..

 

Well sir, there will obviously be a weak spot in the coax. You may need to replace this later. If it works fine, you should not need any other changes, just remember that it is now weak, and like TruckerJo said, moisture may be a problem. Keep an eye on it from time to time.

Semper-Fi
Nick

 

You said the copper braid is roughed up? is it still intact all the way around the inner dielectric. The braid serves 2 purposes one it is the ground. 2 it is a shield to keep unwanted RF out of the system as long as it is still in tact it will work fine but it may be more prone to interference in a RF rich environment and like the others said it may allow moisture in. The moisture can be stopped by a little RTV silicone sealant applies to the area then wrapping electrical tape on top of it for a water tight connection that way. Good luck and like they always say if it aint broke don't fix it.

 

There are several ways to match co-phased antenna's besides the type of coax, including the length of coax and antenna spacing. Yes, you should tune each antenna individually, otherwise you have no way to determine their balance (most of your signal will go to one, not the other, and screw-up your propagation pattern). Yes, the overall SWR is most important to transmitter longevity and antenna efficiency, but individual antenna SWR is just as important as total (co-phased) SWR.

Use a single coax to check each antenna individually.... NOT the co-phased harness!

This is well-covered in books on antenna theory and is also my personal experience!

 

Thanks for replying to that and not having to type it out...