Simultaneous transmitters: prepare a combined RF-exposure evidence scope
The acquired mobile and portable exposure provisions expressly address multiple RF sources operating in the same averaging period. Inventory simultaneous configurations instead of assuming independent component reports prove the combined device; the referenced exemption-ratio provisions need separate current review.
Evidence retrieved 2026-10-06. Source versions and topic-specific limits are listed below.
Sourced criteria · US
What changes the service scope?
Decision or task
What the source describes
What to prepare
title 47 / section § 2.1091 / XML P[4]
(2) For multiple mobile or portable RF sources within a device operating in the same time averaging period, routine environmental evaluation is required if the formula in § 1.1307(b)(3)(ii)(B) of this chapter is applied to determine the exemption ratio and the result is greater than 1. [1]
Compare this exact dated paragraph, its stated conditions and the linked provisions with the supplied configuration evidence.
title 47 / section § 2.1093 / XML P[4]
(2) For multiple mobile or portable RF sources within a device operating in the same time averaging period, evaluation is required if the formula in § 1.1307(b)(3)(ii)(B) of this chapter is applied to determine the exemption ratio and the result is greater than 1. [2]
Compare this exact dated paragraph, its stated conditions and the linked provisions with the supplied configuration evidence.
title 47 / section § 2.1091 / XML P[5]
(3) Unless otherwise specified in this chapter, any other single mobile or multiple mobile and portable RF source(s) associated with a device is exempt from routine environmental evaluation for RF exposure prior to equipment authorization or use, except as specified in § 1.1307(c) and (d) of this chapter. [3]
Compare this exact dated paragraph, its stated conditions and the linked provisions with the supplied configuration evidence.
title 47 / section § 2.1093 / XML P[5]
(3) Unless otherwise specified in this chapter, any other single portable or multiple mobile and portable RF source(s) associated with a device is exempt from routine environmental evaluation for RF exposure prior to equipment authorization or use, except as specified in § 1.1307(c) and (d) of this chapter. [4]
Compare this exact dated paragraph, its stated conditions and the linked provisions with the supplied configuration evidence.
This is a focused preparation guide, not the complete rule set or a product-specific legal determination. Current related rules, amendments/effective dates, grant conditions and deciding buyer facts remain unresolved. No scope, exemption, certification, emission limit or test-panel result is automatically assigned.
Prepare the RF configuration evidence
Use this checklist to gather your business or product details before speaking with a specialist. The items below explain what to record and suggest useful supporting documents. You can add your own answers in the editable project brief.
List simultaneous operating states
Record radios, frequencies, antennas, separations and which combinations can actually transmit together.
Useful evidence: Radio architecture and simultaneous-mode/control matrix.
Preserve each source’s inputs
Provide time-averaged power and use/separation evidence for each relevant configuration; retain unresolved values.
Useful evidence: Per-source RF data, averaging/control evidence and body-separation drawings.
Commission the combined assessment
Ask the specialist to apply the current referenced exemption/evaluation provisions and identify unsupported combinations.
Useful evidence: Combined applicability/method rationale, configuration evaluation and restrictions.
Work packages and dependencies
Conditional: Simultaneous transmitters: prepare a combined RF-exposure evidence scope — Review the documented configurations and current complete provisions; agree the justified evidence/testing scope and its exclusions.
Questions for providers
Which exact configuration facts and current provisions justify the proposed scope for Simultaneous transmitters: prepare a combined RF-exposure evidence scope?
Which supplied-source and grant conditions remain unresolved, and how will you investigate them?
Which operating modes/configurations, evidence deliverables and exclusions are included in the quotation?
Sources and data dates
Read the official document in context. The audit details identify the precise locators and preserved versions used for this page.
