The Titan 2 High Gain Preamplifier (CM7777) is a very high gain preamplifier and if you are too close to the broadcast towers the Titan 2 High Gain Preamplifier (CM7777) can over amplify. You can overdrive your TV Tuner. Tuners are designed to accept signal levels from +11dBmv to -11dBmv. 0dBmv signal level is ideal.
We see this issue a infrequently because customer wants the amplifier with the most gain but with OTA signal, more is not always better. Having too much gain can cause intermittent issues where one day the amplifier works and then another day it does not work at all. This being said, 99% of Titan 2 High Gain Preamplifier (CM7777)'s sent in for warranty service actually have no issues in our lab environment when tested under normal signal levels.
If you live within 50 miles or so from any broadcast towers we suggest using a Titan 2 Medium Gain Preamplifier (CM7778). Please contact who you purchased the device from and if you are within the return policy, set up a return and use the Titan 2 Medium Gain Preamplifier (CM7778) in place of a CM-7777.
If you are adamant that your installation requires a Titan 2 High Gain Preamplifier (CM7777) you can always send it in for warranty service if you are within the 90 day warranty period. We're happy to test for you. If the unit tests good, we will send it back to you.