Understanding Ku Band vs Ka Band Satellite Frequencies
Satellites broadcast at different microwave frequency bands. The two you will meet as a home viewer are Ku band and Ka band. They have different properties — and the choice affects dish size, weather sensitivity and the channels you can receive.
Ku Band (10.7–12.75 GHz)
The workhorse of home satellite TV. European consumer satellites (Astra, Hot Bird, Eutelsat) broadcast almost entirely in Ku. Signals pass through rain reasonably well, and dishes of 60–90 cm work well. This is the band your domestic LNB receives.
Ka Band (17–30 GHz)
Higher in frequency, Ka band is used for very high-throughput satellite internet and some next-generation services. It carries more data, but it is much more sensitive to rain fade — rain absorbs Ka signal heavily. Receiving it needs a dedicated dish and LNB.
Why the Difference Matters
- Dish size: Ku works with small dishes; Ka needs larger dishes for the same margin.
- Rain fade: Ka is far more weather-sensitive.
- Use: Ku for TV; Ka for broadband and high-density data.
What Band Do Consumer Services Use?
Virtually all home satellite TV in Europe is Ku band. If you are pointing a dish at Astra or Hot Bird, you are on Ku. Ka band shows up mainly on satellite broadband terminals.
LNB Types Match the Band
A Ku LNB will not receive Ka, and vice versa. The bands are separated in hardware. If you ever see a “Ka band LNB”, it is for a completely different service.
Ku and Ka are two different microwave worlds. Your satellite dish, your LNB and your channels are almost certainly Ku — and that is fine for watching TV.
