I live in Suwanee and have a Whistler TRX-2. Trying to monitor the Atlanta TRS. I am able to receive the Fulton County TRS with no issues. I have the squelch set to zero and have tried attenuation with no success. My antenna is a discone on lmr-400 around 30 feet. Any suggestions on improving my receive of this system. Would an SDS-200 solve this? Thanks.