What frequency does a Ku-Band LNB use?
A Ku-Band LNB receives satellite downlink signals in the 10.7-12.75 GHz range. A Universal Ku LNB uses two local oscillators-9.75 GHz for the low band (10.7-11.7 GHz) and 10.6 GHz for the high band (11.7-12.75 GHz)-switched by a 22 kHz tone. This yields an L-band output of 950-2150 MHz for the receiver.
Ku-band is the most widely used band for direct-to-home (DTH) satellite TV because it delivers strong signal power to relatively small dishes (typically 45-90 cm). The higher frequency allows compact, low-cost dishes and LNBFs, which is why it dominates the consumer market.
Different regions use sub-segments of Ku-band, such as FSS (10.7-11.7 GHz), DBS (11.7-12.5 GHz), and Telecom bands. A Universal LNB spans the full band using dual local oscillators and 22 kHz tone switching, while some regional LNBs are single-LO designs optimized for a narrower slice of the spectrum.