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This experimental station operates on a non-interference basis to the primary users in the 137.4 kHz to 137.8 kHz band. The generally accepted practice among secondary users, particularly in the Amateur Radio Service, is to adhere to a band plan where there are published and known centers of activity for a particular mode of communication or technique.

Because the United States does not have an LF Band allocation, this experiment adheres to the ITU Region 1 Band Plan. We adopted this guidance in the event the experiment encounters nighttime skywave mode conversion.

QRSS-60

Dial Frequency: 137.7 kHz
Lower Band Pass Frequency: 137.6 kHz
Transmitter Frequency: 137.7 kHz
Upper Band Pass Frequency: 137.8 kHz
Band Width: 200 Hz
Emission Designation: H200A1B

WSPR-15

Dial Frequency: 136.0 kHz
Lower Band Pass Frequency: 137.4 kHz
Transmitter Frequency: 137.5 kHz
Upper Band Pass Frequency: 137.6 kHz
Band Width: 200 Hz
Emission Designation: 6H00J1B

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