I am looking for the best antenna for my GRE PRS600? I have a 2.4G wireless antenna I used for WiFi and don't know if that will work? I am using my 600 for a base model in my apartment but also moving it to the truck on occasional long trips. I would really like to scan all frequencies but I'm guessing 800 will be my most used. I have an old BCT8 that had an extendable antenna and a wire antenna that sticks to the window. Any suggestions on the perfect antenna for my operations???