i picked this pro 57, up on ebay in the original box, with all original paper work, charger etc. it looks to be in new like cond. i installed the antenna and programmed my locals, and not once will is stop on a call. i have it siting next to my ol uniden bearcat sportcat and its picking up fine, with the rubber antenna, and it works great as usual. i plugged in a external antenna and still nothing. i moved it everywhere in the house, next to this window that window still nothing. even when if i manually have it on the same frq as the bc, i get nothing. any ideas what might be going wrong. or does it look like i'm out of $30 bucks?? deve.