I need some help on a Celwave antenna I'm trying to fix. It's specs are 460-470 mhz 6db gain. Do not have a exact model number but I will try to find it. I bought it off ebay with the person stating they had no idea what was wrong with it but once I received it and took the fiberglass housing off, I found the problem. Or atleast I hope. There is a 7 or 8 copper elements I can't remeber exact with plastic spacers inbetween. A center conductor, looks like a center conductor of about the size of RG-213 runs through these elements and on top of the last element the center conducotr bends up through the hole and is soldered on a aluminum clad. The solder had rubbed or at least thats what look liked had happend and the center conductor had been disconected from the antenna. What I need is some information in conduction a ground plane for this antenna. I assume this antenna requires a ground plane because the way I understand a antenna works is the signals radiate down to the ground plane and then scatters horizontally. Can someone give me some help or info on weather a ground plane is neccasry. It will me "U" bolted on a 40 ft Rohn tower if that helps any.
