For less than $400, it's possible to observe places like the star-forming regions at the center of our galaxy.
A signal amplifier should only be used as a last resort when the television signal is weak. Even the best amplifier will still add some noise to the television signal it is amplifying/boosting ...
AD is available on all TV platforms (and BBC iPlayer) but is not available for every programme. Use the EPG (Electronic Programme Guide) on your television. If a programme has audio description ...