I've been struggling with picking up anything but 10.1 and 47.1 in my location. I have a CM-3020 Long Range with a CM-7777 Preamp. Here is an image of the stations I should be receiving. I'm stumped!
As 3.1 broadcasts on UHF 15 and 6.1 broadcasts on UHF 34, you're within the range. The difficult part is going to be avoiding overdriving the nearby channels to get the distant ones.Should be able to pick up down to 3.1 and 6.1?