I have read the couple of detailed posts about the AM21's tuner capabilities but I am experiencing the situation where my television's OTA tuner (Toshiba 40RF350U) is far more capable at locking onto the OTA signal from the same antenna. I get three measures from the Toshiba; SNR, Signal, Power. The SNRs for 8 of my 9 local OTA stations range from 26 to 33, with the 9th station at 58. The television can lock onto all 9 but the channel with the 59 SNR drops in and out. I am going to put the H21/AM21 combo right next to my Toshiba so I can eliminate as many variables as possible as I am using a diplexor setup on the H21/AM21 currently. Interestingly, the first software load for the H21/AM21 combo allowed me to pull in 8 of my 9 OTA stations, with the 59 SNR channel being the one I couldn't get. Now with the latest software I can only acquire 2 stations consistently and 1 intermittently. Has anyone else noticed a drop in the AM21 tuner's capability when going to the latest software load?