- Private Cellular Network - GXC Onyx

ROM AP Calculator

ROM AP Calculator

Quick rough‑order‑of‑magnitude access point estimate for private cellular (4G/5G). Assumes US 4G=20 MHz and 5G=40 MHz (DL gain capped by UL device class), or UK/EU/AU with 5 W/40 W AP power classes. Results are ROM; field survey and RF design are required for production.

Reference Tables

Regions & Rules
Region	Technology	Assumed BW	Power
US (CBRS)	4G / 5G	4G: 20 MHz · 5G: 40 MHz	Implicit via BW
UK/EU/AU	5G only	—	5W or 40W (selector)

Clutter Level Factors
Level	Factor
Low	1×
Medium	0.8×
High	0.6×

Indoor Coverage by Design Goal (4G @20MHz)
Objective	Coverage/AP	Spacing	APs/100k sq ft
Coverage-Oriented	25,000 sq ft	125 ft	4 APs
Capacity-Oriented	10,000 sq ft	80 ft	10 APs

Outdoor Coverage (4G @20MHz)
Env Type	Coverage/AP	Spacing
Open Campus / Yard	1,000,000 sq ft	750–800 ft
Heavy Industrial / Chemical Plant	500,000 sq ft	400–500 ft
Industrial Perimeter	600,000 sq ft	600–750 ft

Scaling Model (DL vs UL)
Component	Rule
US (DL)	4G@20 MHz baseline (0 dB); 5G@40 MHz ≈ +3 dB → DLscale ≈ 2.0×
EMEA (DL)	ΔP dB = 10·log10(P/5W) (5W baseline) → DLscale = 10^(ΔP/10)
UL Cap (Device Class)	Handset 1.1× · External Antenna 1.25× · Outdoor CPE (High) 1.5×
Auto Scale	min(DLscale, ULcap)
Planning Stance	Always applied after Auto: 1.0× / 1.5× / 2.0×

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