Spectrum Allocation
The process of assigning specific radio frequency bands for satellite services, managed by international and national regulatory bodies.
Explanation
Spectrum allocation is the regulatory framework that determines which satellite services can use which frequencies, where, and under what conditions. The International Telecommunication Union (ITU) manages global allocation at the World Radiocommunication Conference (WRC). National regulators like the FCC (US) and Ofcom (UK) implement and enforce allocation within their jurisdictions. Key satellite frequency bands — C-band, Ku-band, Ka-band, V-band — are allocated for specific services (fixed-satellite, mobile-satellite, broadcast-satellite). The allocation process is highly contested as demand from LEO constellations, 5G, and incumbent users intensifies. Spectrum is allocated on a primary or secondary basis; secondary users must accept interference from primary users. Allocations are made years in advance through a filing and coordination process. Unauthorized use or out-of-band emissions can result in fines or license revocation.
Why It Matters
Spectrum allocation determines which business models are viable. A constellation that cannot access sufficient spectrum in the right bands cannot operate. Spectrum is the most valuable asset for most satellite operators.
Concept Map
How Spectrum Allocation connects to other glossary terms:
Frequently Asked Questions
Who decides which frequencies satellites use?
The ITU allocates spectrum globally. National regulators (FCC, Ofcom) manage licensing within their countries.
Can satellite operators share the same frequency?
Yes, through coordination agreements. Operators agree on power levels, pointing, and geographic separation to avoid harmful interference.
Sources
Last updated: July 1, 2026