I have a Cm 4228 in my attic with a CM 7777 amp. I also have rabbit ears for my one digital station broadcasting in VHF. Any way I get all my local stations except for PBS channel 10. which broadcasts it's digital signal on 53. Our NBC station broadcasts it's digital signal on 52 and I receive it fairly well. 63-69% on my VIP 622. In fact i recently replaced my balun with one I bought at ACE hardware and get better reception #'s. Before, I had 58-61 % with dropouts on NBC especially around midday. Now dropouts rarely happen on NBCand my other stations come in stronger. And I can now occasionally lock in on PBS.Any way I thought i read someplace where you could trim the bow-tie tips to increase gain for channels above 51. I really don't want to do anything that would mess up my other channels, becaue PBS is a lower priority for me. So is there an effective, reversible way to increase gain for Ch. 53?
