It's all about the Software

Hey Folks,

I'm a phd student and I designed my own antenna (magnetic field antenna) that works through a usb audio port - There are a ton of SDR software solutions that work with it, with virtually no setup, but no one piece of software has all the features this program does. Specifically i need to record and export raw signal data, and I'm hoping there's the option for bandpass filters.

I've done some searching but no luck - is there any documentation on how to get a generic antenna via USB working? esspecially one that doesnt limit frequency ranges? Some of my work is around 1 hz.

Have you looked at Spectrum Lab? It's free, and comprehensive (and complex ).
See: https://www.qsl.net/dl4yhf/spectra1.html

Regards,
Charles.

gitmo234, there seems to be a handwavium gap between "my own antenna (magnetic field antenna)" and the USB port. Is the USB used as a power supply? Is the antenna feeding some form of A/D converter? Are you feeding it out the USB as an audio signal? 1Hz at an antenna will be a huge challenge to get enough capture area to give you any signal to receive over simple kTB noise let alone the 1/f noise of devices. Then you will have to attack thermal drift in the amplifiers.

Check the seismometer people for amplifier hints. They specialize in low to very low frequency data. Back in the day (pterosaurs were common {^_-}) using voltage variable capacitors in a balanced bridge modulator -> amplifier -> demodulator chain was the touted new technology. Then the whole seismometer and amplifier package was stuck 100' or more underground where T is more or less constant.

Good luck with it.
{^_^}