Hello, I just got the MFJ 1868 discone antenna with 50ft of rg-58 coax but had to splice the so 239 with a bnc connection. I am not impressed with the reception, I get better reception with my rh77ca handheld antenna. Is there something wrong I did with the coax or something I can do to get better signal? I am also looking to increase my 800-900mhz trunked frequency range, but can not have anything outside my place. Any suggestions? Thanks