HFU HF Underground
Loggings => 10/11 meters => Topic started by: R4002 on September 10, 2026, 2253 UTC
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Received locally here in Richmond, VA. Also hearing it on the N1NTE SDR receiver. Lots and lots of QRM from AM voice, FM voice and data bursts (RCRS - Class C CB radio). Most voice traffic is in AM mode 27255kHz AM. CB radio channel 23 AM. Heard Portuguese language and English mixing together on top of and with the taxi dispatcher lady - Spanish language taxi cab on CB channel 23. MFSK data BURRRTTTT BURRRRTTTT BUURRTTTT bursts every...0.5 to 1 second or so...sometimes every 5-10 seconds. Seems to be multiple datalink networks on the same frequency coming in.
27.255 MHz FM data FSK bursts - 25 watt power legal per FCC rules
27.255 MHz AM voice taxi cab
27.255 MHz FM voice