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01 March 2021

UNID Data Station
011610 MAR 2021 - 8088.0 kHz (8090.0 kHz centre frequency)
Digital (4 kHz bandwidth) UNID station sending data using a multi-tone modem similar in nature to that of a 39-Tone modem. A potential user of this frequency has been linked to Antarctic stations but is unconfirmed.
16:51Z - End of transmission.

Recording of the UNID data transmission on centre frequency 8090.0 kHz dated 2021-03-01. (0:19)

02 February 2021

Brazil DRM Experimental
022343 FEB 2021 - 11910.0 kHz DRM (tune 11905.0 kHz / digital mode / 10 kHz wide filter)
Brazil DRM Exper (Brazil DRM Experimental); 12.46 kbps EEP aac+ Mono; including DRM Journaline (data).
The Station was also monitored on 22:49 UTC 03 February 2021 and 22:00 UTC 04 February 2021.

Sample recording of Brasil DRM Experimental HF transmission dated 2021-02-02. (4:05)

About the Author

Richard Lacroix has been a radio hobbyist since the mid 1970s and has been professionally employed in both the commercial and military communication fields since the mid 1980s.

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First published: September 28, 2020
Revised: March 04, 2021
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