Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

WWVB Antenna Configuration and Power

During normal operation WWVB transmits an effective radiated power of 70 kW from two antennas. For maintenance purposes, WWVB sometimes operates on a single antenna or reduced power. The table below reflects this information.

* indicates that an outage or outages occurred during this period, see the WWVB Broadcast Outage web page.

2021 Outages2020 Outages2019 Outages | 2018 Outages | 2017 Outages 

Date MJD Began (UTC) Ended (UTC) Antenna Configuration

Radiated Power (kW)

24 April 2022 59693   0132 Dual 40
23 April 2022 59692 1906   Dual 40
09 March 2022 59647 1055 1322 North 30
04 March 2022 59642 0631 1406 South 30
19 February 2022 59629 1024 1700 North 30
19 January 2022 59598 1353 1430 South 30
Created December 5, 2016, Updated April 27, 2022