Comparing second 5650A rubidium time source from AliExpress at LRO with Leo Bodnar LBE-1421 GPS-disciplined time source 30/9/2026

By Admin September 30, 2026

I now have 2^nd one of these – video comparing it to Leo Bodnar 1421 GPS disciplined time source can be downloaded at:

https://files.ad.thornett.net/astronet/Testing2ndRubidium5650A300926@1228-edited.mp4

Quite big file – 8 GB – so give it a while to download.

By Admin

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Comparing second 5650A rubidium time source from AliExpress at LRO with Leo Bodnar LBE-1421 GPS-disciplined time source 30/9/2026

What frequency range is covered by SDRPlay 2 and RSPDuo software defined radios? Can they be used for VLF radio astronomy?

Capacitance and impedance matching on loop antennas in VLF radio astronomy

Modulation of large lower VLF transmitters used for submarine communication (the same VLF signals used for SID detection by amateur radio astronomers)