[John Candle]

Yes there is , but first if you have not done so already , ground that coax with a coax grounding block , the shield of the coax is one big long antenna , grounding the shield of the coax will help by directing undesirable signals to ground. <-- This might get you channel 4. . . The first one to try is the easyest , lower and raise the antenna a little or a lot , you can even try the antenna at closer to ground level , you can try using buildings as shields but do not block the front of the antenna. . . The next one to try is , Shielding , with a big flat metal shield about 6 feet by 4 feet , you can cover a big sheet of card board with extra thick aluminum baking foil or if you can find thin metal sheating thats used for metal flashing on roofs. What you do is hold the metal up so the long part of metal is horizontal with the ground and the move the shield so that it shields the antenna from all different angles except the front , so you hold the shield up at the back of the antenna and try for channel 4 , then hold the shield at corner back angle and then at the side of the antenna and so forth and so forth. . . . Next you can try this , if the metal receiving elements of your antenna are sticking straight out from the sides of the antenna then sweep them forward , first unlatch the spacer elements that are attached directly to the boom and turn them length ways with the boom to get them out of the way and then unlatch the VHF elements and sweep/move them so they are at about a 45 degree angle toward the front of the antenna. Doing this narrows the forward reception so the antenna is more directive.