WWV Time Station 20 Mhz Transmitter Collins HF-8010A

In 2010, I was attending a workshop to become a certified Pizzaiolo and had an enjoyable time in Boulder, CO

I was within driving distance of WWV so I decided to make the trip and also check out the Rocky Mountain State Park

I can assure you that my career as a SWL would have had me pick up the time signals from its current location

A drive out there was awesome among the colorado peaks but I was not able to get a tour of the facility but enjoyed seeing the huge antennas. You could almost feel the time signals being received on my cavities in my teeth and naturally my Icom R20 radio was overloaded by the strong signals

WWV has a history that dates back to the early days of radio broadcasting. The call letters WWV were assigned to the National Bureau of Standards in October 1919. The station began testing from Washington, D.C. in May 1920 on a frequency of about 600 Khz using 50W of power.

In 1932, the station was relocated to Beltsville, Maryland.

In 1933, the station was broadcasting 30 kW on 5 , 10 and 15 MHz broadcasts

In 1966, the station was relocated to Fort Collins, Colorado.

The LF station WWVB went on the air in July 1963

NIST radio station WWV broadcasts time and frequency information 24 hours per day, 7 days per week to millions of listeners worldwide.  The broadcast information includes time announcements, standard time intervals, standard frequencies, UT1 time corrections, a BCD time code, geophysical alerts and marine storm warnings.

WWV transmits  10,000 W on 5, 10, and 15 MHz; and 2500 W on 2.5 and 20 MHz.

The WWV antennas are half-wave vertical antennas that radiate omnidirectional patterns. There are actually five antennas at the station site, one for each frequency. . Each antenna is mounted on a tower that is approximately one half-wavelength tall. The tallest tower, for 2.5 MHz, is about 60 m tall. The shortest tower, for 20 MHz, is about 7.5 m tall. The top half of each antenna is a quarter-wavelength radiating element. The bottom half of each antenna consists of nine quarter-wavelength wires that connect to the center of the tower and slope downwards to the ground at a 45 degree angle. This sloping skirt functions as the lower half of the radiating system and also guys the antenna.

WWV Antenna Coordinates 

40° 40′ 55.2″ N 105° 02′ 31.3″ W

wwv image08967 fort_collins_artist_conception




wwv transmitter 20mhz

wwv time pips


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s