I installed an AP-8700 at the antenna hoping to get more stable reception of a couple channels that come and go. On average the SNR gain reported by my Samsung PN50C550 does not change with or without the AP-8700 preamplifier. For three channels, the before/after SNR gains are:
channel 13-1, 17.4dB/16.9dB
channel 8-1, 17.9dB/18.9dB
channel 11-3, 29.5dB/29.0dB
I expected these numbers to increase. Are my expectations wrong or is something else wrong?