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Title: What is the signal on 3740.4? Post by: k4kyv on October 09, 2005, 03:10:59 PM The past seveal nights I have heard a strong steady carrier on 3740.4 kHz, modulated with what sounds like some kind of digital data. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
The signal sounds similar to interference I receive from my cable modem, but this signal is coming in by skywave, as evidenced by QSB on the signal. It does not sound like amateur or other two-way radio communication using a digital mode, since the transmission is continuous, with no standy-by periods to listen to another station respond. Anyone else heard it, or have any idea what this is? |