I have 3 new XL's used for OTA only. The signal strength meter shows green at 50 and above, yellow 40-49 and blue (ghost!) 39 and below. I have 2 channels in the low 40's usually (high VHF, digital 11 & 13), the rest are high 50's up to 85+.
My signals breakup below 40 and seem to be OK above that. I consider 50 and above to be safe (probably won't dip below 40 at any point), although I get nervous if the signal dips below 50. So, the color coding of the signal strength "bar" is an accurate indicator of good signal for me.
Originally Posted by scandia101
I use my Premiere for OTA and I have 3 channels with signals in the upper 30's (to low 40's at best) and have no issues.
I have severe multipath problems (only with the TiVo's OTA tuners) which may account for your getting acceptable results below 40! This is, however, a subject better suited to another thread.