Here you go: https://tf.nist.gov/stations/wwvbcoverage.htm https://tf.nist.gov/stations/wwvbcoverage.htm Keep in mind antenna placement matters with these cloc

Here you go: https://tf.nist.gov/stations/wwvbcoverage.htm https://tf.nist.gov/stations/wwvbcoverage.htm Keep in mind antenna placement matters with these clocks. Different parts of the room can have very different signal strengths. Away from other electronics and near a window is all better.