Amazing what a decent antenna will do for a repeater. Good antenna, good duplexer translates into decent coverage.
But one word of caution, make sure your using double shielded coax between the radios and the duplexer. You could use some 1/4 or even 3/8 helliax coax.
Just make sure your not using any LMR series coax in any repeater application. It may work for a while, but you will eventually get moisture into the coax and you will start to have all sorts of noise problems.
Sure you will hear from those that support this kind of coax for duplex operation. But given enough time they will change their support for it. The higher the humidity where the cable is used, the faster the problem will show up. These people will tell you that if properly weather sealed, you won't have the problems.
The moisture gets into the shield of the cable and causes all sorts of little diode connections between the aluminum and the copper braid. It makes for some real interesting trouble shooting to locate the source of the noise it will generate. The more the cable flexes in the wind, the more the noise will show up. The higher the repeater transmitter power, the faster you will see the problem.
