Thanks for the good news; glad you like the reception results.
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What does the symptoms of an overloaded tuner look like, exactly? (for my future reference so I know what to watch for).
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You will usually see pixelation of the weakest signals first.
The strongest signals create spurious signals from IMD (Intermodulation Distortion) that raise the noise floor and reduce the SNR of the weakest signals to less than the minimum required 15 dB.
Here is a spectrum analyzer display of the Antennas Direct Eclipse antenna in a strong signal area without a preamp:
Here is the signal display when an overloaded Mohu Jolt amp has been added:
