What is a spherical dish antenna required for satellite tv reception?

Spherical dish antennas are generally not used for satellite TV reception. The most commonly used dish antennas for satellite TV are parabolic antennas, which have a curved shape that helps focus the incoming satellite signals and direct them towards the LNB (low-noise block) converter located at the focal point of the dish. Spherical antennas, on the other hand, have a rounded shape that does not provide the necessary focusing properties required for efficient satellite signal reception.