After many years away from scanning I recently took up the hobby again. Years ago I lived in the Mountain View area which is about 15 miles North of San Jose. As I recall, I used to get good-to-excellent results scanning the SJ PD primary frequencies even with an indoor antenna. I now live within 3 or 4 miles of San Jose's "Communications Hill", yet I only receive a few of these channels with decent signal strength/listening quality. 6,7,8 and 1 are OK but all the others are either weak or non-receivable. San Jose Fire primary is also weak but listenable. I'm using a Diamond SRH-789 antenna which I adjust as needed to suit the range I'm monitoring. Just wondering if anyone has any idea why reception is so spotty now.