Had the same type problem on our 2005 Gulfstream. Could pick up only a few close channels on the antenna, and those were flakey. Thinking that the antenna may have gone bad as the MH had been cooked in the sun before we got it. Checked all cables and connections, everything was good. I replaced the antenna head with a new WG Sensar IV with Wingman. Results were fantastic!! Signal as indicated by TV is doubled, and lots of channels just about everywhere that signals are available! Cost about $125 including installation. If you are able, installation is an easy DIY job for 15 min or less.