I just got back from 4 days of camping at Seboomook Campground at the northern end of the lake. The fishing was fast and furious. Caught a few brooktrout, togue and salmon on copper mooselooks but the big numbers of fish were on frozen smelts.
Caught brookies at all depths from 15' to 70' in 100 ft. of water. Same with togue, altough 40' seemed to be the magic number. Came up to 20' down in 50'-70' of water and started hitting the salmon.
I was using downriggers, but with leadcore I'd fish anywhere between 3 and 7 colors, experiment with speed somewhere between 1.8 and 2.5 with mooselooks and db's.
Can't help with the radio....although you can pick up 105.1 on FM.
I was a long ways from Tomhegan Cove, but we caught fish whenever we saw a lot of bait and fish on the fish finder and concentrated that area.
Last tip is don't leave your camera and gps on the side rail of boat when heading home. If you find them at the Rockwood launch area or vicinity let me know. Good luck!!