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SPECTRUM COORDINATION NOTES

Notes on ITU filings, BR IFIC, and satellite interference coordination

Practical, no-fluff explainers written for RF engineers and regulatory teams who deal with the ITU coordination process directly.

SAT-A (existing)
SAT-B (new filing)
โ†‘ overlap region โ€” this is what coordination screening looks for

How Long Does ITU Satellite Coordination Actually Take?

Realistic timelines for ITU satellite filing and coordination โ€” from advance publication to bringing a network into use, including NGSO deployment milestones.

5 Common Mistakes in Satellite Interference Screening

The most common ways a first-pass interference screening goes wrong โ€” and how to avoid them before they cost you a surprise coordination request.

What Are EPFD Limits, and Why Do They Matter for NGSO Constellations?

EPFD limits under Article 22 of the ITU Radio Regulations govern how NGSO constellations coexist with GSO satellites. Here's what they are and why they're under active debate.

A Guide to Satellite Frequency Bands: L, S, C, X, Ku, Ka

A practical reference to the letter-designated satellite frequency bands โ€” what they cover, what they're typically used for, and why the letters aren't official ITU categories.

How to Read a BR IFIC Entry, Field by Field

A plain-language walkthrough of the fields in a BR IFIC satellite filing entry โ€” administration, notice type, frequency, polarization, EIRP, and orbital data.

GSO vs NGSO: How ITU Satellite Coordination Changes

Geostationary and non-geostationary satellites are coordinated under different rules at the ITU. Here's what actually changes, and why it matters for interference screening.

The API/A Surge: Why Manual Interference Checks No Longer Scale

ITU filing volumes have grown roughly 5.5x over the past decade, driven by the space economy boom. Here's why that makes continuous monitoring necessary, not optional.

What Is the ITU BR IFIC, and Why Every Satellite Operator Should Track It

The Bureau's regular publication is where every new satellite frequency filing becomes public. Here's what's actually inside it, and why it matters before you file.

How to Screen for Satellite Interference Before You File with the ITU

A practical walkthrough of frequency-overlap screening: what to check, when to check it, and why doing it before submission saves months later.

API/A vs CR/C: Understanding ITU Satellite Notification Types

The ITU filing process has several distinct notification stages, each with its own purpose and legal weight. A clear reference for what each one means.