DVR 510 problems w/ locals on 121

[dotpage]

I'm an SBCA Cert. Installer, and every single costumer I install a 121SD Type I w/a 510 (including myself...), the locals keep going in and out, freezing, loosing signal, etc.. does anybody have a clue about what's going on????
P.S.: the signal strenght on 121 it's about 85/95

 

[geeky]

I'm in Lansing, MI and I am having the same problem. My signal strenght is around 79, but I still get glitches and stutters. Been meaning to call up customer service, but I always dread it.