WWVB and the
AMRAD Active Antenna

In addition to a WWVB-specific Spectracom antenna, I also have an AMRAD Active antenna that I use for LF reception. I wanted to see how it performed compared to the Spectracom. Here are some signal-strength charts based on recording a couple of days' worth of data. The test setup is the same as I used for my Spectracom 8206 antenna test, so you can look there for more details.

Full Run

Signal-to-Noise Ratio