HFU HF Underground
Loggings => Longwave Loggings => Topic started by: ChrisSmolinski on July 31, 2017, 1659 UTC
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Here is a high resolution waterfall of 323 kHz, showing local pest GTN in Georgetown, VA, along with I think 6 additional carriers. Made with Carrier Sleuth: http://blackcatsystems.com/software/medium_wave_carrier_display_app.html
If the carrier frequencies of the various NDBs are well enough known (as well as your SDR's sample rate), perhaps this would be a useful identification tool.
(http://i.imgur.com/HHpl5Yi.jpg)