Question:

What types of signals can my TV receive using an antenna or cable without a box, and how do they affect picture quality? How can I determine the type of signal my TV is receiving and improve its picture quality?

Answer:

There are three types of signals your TV can receive using an antenna or cable without a box: Digital High Definition (HD), Digital Standard Definition (Digital SD), and Analog Standard Definition (Analog SD). The type of signal impacts the picture quality. Here's how to determine the signal type and improve picture quality:

Both Conditions Are Met: Digital HD (High Definition) Signal

If both conditions are met, you're receiving a digital HD signal. Picture should be clear and sharp. Perform a Self Diagnosis on the TV if still experiencing issues.

The First Condition Is Met, But Not The Second: Digital SD (Standard Definition) Signal

If the first condition is met but not the second, it's a Digital SD Signal. Picture quality is inferior to HD but better than Analog SD. Try different Digital NR settings or perform a Self Diagnosis for issues.

Neither Condition Is Met: Analog SD (Standard Definition) Signal

If neither condition is met, it's an Analog SD Signal. This is the lowest quality signal. Unfortunately, there's limited improvement options. Try different Digital NR settings or perform a Self Diagnosis for issues.

To improve picture quality:

For Digital SD and Analog SD signals, try all Digital NR settings (including "Off").

For Analog SD signals, also try Fine Tuning your channels.

Remember, Analog channels appear fuzzy. If turning to a Digital HD Signal or performing Self Diagnosis results in good picture quality, there's no issue with your TV.