Editing Low-noise block downconverter (section)

== Cold temperatures ==
It is possible for moisture in an LNB to freeze, causing ice to build-up at very low temperatures. This is only likely to occur when the LNB is not receiving power from the satellite receiver (i.e., no programmes are being watched). To combat this, many satellite receivers provide an option to keep the LNB powered while the receiver is on standby. In fact, most LNBs are kept powered because this helps to stabilise the temperature and, thereby, the local oscillator frequency by the dissipated heat from the circuitry of LNB. In the case of UK [[BSkyB]] receivers, the LNB remains powered while in standby so that the receiver can receive [[firmware]] updates and [[Electronic Programme Guide]] updates. In the United States, the LNB connected to a [[Dish Network]] receiver remains powered so the system can receive software and firmware updates and guide information over the air at night. In Turkey, another LNB type [[Digiturk]] MDUs are kept powered to receive [[Video on demand|VOD]] content, STB firmware, EPG data, and pay-TV keys in order to watch encrypted content.