KE7IZL
Member
Using a 192kHz soundcard with a long wire antenna connected to its left input channel, and using the SDR# software I screen capped this spectrum/spectrogram image. I have annotated it so that you can see what's showing in it.
Lots of signals are in here as you can see, most of which still unknown to me.
Of all the signals though, the one that's most interesting is the one that's not there, that should be. Where is the WWVB atomic-clock broadcast? It should be at exactly 60kHz, and is supposed to be so strong that even a tiny wristwatch with a receiver and internal antenna can receive it. The actual transmitter for WWVB is supposed to be so strong, that even though the 60kHz has a very long wavelength, even a tiny receiver antenna in a wristwatch is capable of receiving it. Certainly, my long wire antenna (which is 20 feet long) should have no problem picking up this signal.
Lots of signals are in here as you can see, most of which still unknown to me.
Of all the signals though, the one that's most interesting is the one that's not there, that should be. Where is the WWVB atomic-clock broadcast? It should be at exactly 60kHz, and is supposed to be so strong that even a tiny wristwatch with a receiver and internal antenna can receive it. The actual transmitter for WWVB is supposed to be so strong, that even though the 60kHz has a very long wavelength, even a tiny receiver antenna in a wristwatch is capable of receiving it. Certainly, my long wire antenna (which is 20 feet long) should have no problem picking up this signal.