3550–3700 MHz · draft instrument

Turn a CBRS right into a measurable claim.

Describe the authorization, place, time, and engineering conditions. The calculator returns the resource quantity, a notional value, and a portable token record.

Token inputs

4 blocks
01

Access right

PAL is protected from GAA but remains subordinate to incumbents.

02

Resource envelope

MHz
MHz
hours

A county name, tract ID, site ID, or polygon reference.

355036253700 MHz
3550–3560 MHz selected
03

Engineering gate

Check external interferenceAdds Iext to the internal-interference baseline.
Radar interference sources

Ground-based radar

Inland-site reference

km
dBm
%
dB

Coastal-county reference

km
dBm
%
dB

Both modeled radar contributions are combined in Iext. Use separation and activity assumptions suited to the selected geography; Navy shipborne radar is the coastal-county source, while ground-based radar covers inland sites.

Commercial KPI gate
dBm
dBm
dB
Incumbent-protection gate
dBm
%
dB
dBm

The transparent parametric model uses free-space path loss at the selected band center plus the entered off-axis, clutter, and terrain terms. Radar activity factors are scan-dwell shares (azimuth beamwidth ÷ 360°): ≈0.4% for a 1.4° rotating surveillance beam — the fraction of time the beam illuminates the site, i.e. the closed-window share (shipborne search sets with wider beams run higher, e.g. ≈0.9% for a 3.3° beam). This is not the radar's pulse duty (~0.1% within a dwell); the long-term time-average is dwell × pulse duty.

04

Valuation assumptions

There is no universal CBRS token price. Use a negotiated, auction-discovered, or scenario rate.

USD
%
%

Enter the premium or discount explicitly; selecting PAL or GAA never hides one in the formula.

Quantity = MHz × hoursThe resource unit is independent of price and access tier.
SINR = S / (Iᵢₙₜ + Iₑₓₜ + N)Iₑₓₜ is the power sum of ground-based and Navy shipborne radar contributions.
Value = quantity × rate × usable share × (1 + adjustment)A failed gate clears zero units; the requested quantity remains visible.

Research calculator only. It does not grant spectrum rights, replace SAS/ESC authorization, or represent a market quote. Incumbent-protection decisions remain with the authorized CBRS coordination framework.

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