47 CFR § 5.71 - License period.

---
identifier: "/us/cfr/t47/s5.71"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 5.71 - License period."
title_number: 47
title_name: "Telecommunication"
section_number: "5.71"
section_name: "License period."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "A"
subchapter_name: "GENERAL"
part_number: "5"
part_name: "EXPERIMENTAL RADIO SERVICE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "47 U.S.C. 154, 301, 302, 303, 307, 336."
regulatory_source: "78 FR 25162, Apr. 29, 2013, unless otherwise noted."
cfr_part: "5"
---


# 5.71 License period.

(a) *Conventional experimental radio licenses.* (1) The regular license term is 2 years. An applicant may request a license term up to 5 years, but must provide justification for a license of that duration.

(2) A license may be renewed for an additional term not exceeding 5 years, upon an adequate showing of need to complete the experiment.

(b) *Program, medical testing, and compliance testing experimental radio licenses.* Licenses are issued for a term of 5 years and may be renewed for up to 5 years upon an adequate showing of need.

(c) *Broadcast experimental radio license.* Licenses are issued for a one-year period and may be renewed for an additional term not exceeding 5 years, upon an adequate showing of need.

(d) *Spectrum Horizons experimental radio license.* Licenses are issued for a term of 10 years and may not be renewed.

[78 FR 25162, Apr. 29, 2013, as amended at 84 FR 25690, June 4, 2019]