On my Zenith receiver, in Exeter, NH, the signal seems to be unstable. On my Zenith 1080, the signal strength meter fluctuates from low normal to high normal second to second and is very seldom stable. Have just mounted a second Blake 21 antenna vertically and in parallel and the signal strength has gone into the good range but still bounces from high normal to mid good. Same thing occurs with 25. All other Boston stations are rock solid mid to high good range. No trees in the way, alltjough 7 and 25 seem to be a few degrees east of the others. Bill
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