Unknown 15p050 FMCW radar resembles CODAR

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Unknown 15p050 FMCW radar resembles CODAR
Unknown radar like CODAR 1.png
Frequencies 7.92 MHz,8.65 MHz,16.45 MHz,20.8 MHz,12.8 MHz,14.88 MHz,15.05 MHz
Frequency Range 7.92 MHz - 20.8 MHz
Mode USB
Modulation FMCW
Bandwidth 100 kHz
Location Worldwide
Short Description Wideband slow-sweeping FMCW radar, somewhat similar to CODAR. Operates outside designated research radar bands.
I/Q Raw Recording Download file
Audio Sample

This radar signal has been observed in 2024 on several frequencies. It resembles CODAR but transmission mode seems to be FMCW, not ILFM which is typically used by CODAR. Signal strength fluctuates but the typical pulsed or chopped pattern is not seen. Sweep rate is 4 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). and bandwidth is 100 kHzKiloHertz (kHz) 10^3 Hz. Unlike most CODARs and similar research radars, this radar operates on bands that are not allocated for such use.

Operators of this or these radars are unknown. Operation outside of the designated marine research radar bands suggests that it might be operated by military or a country that does not follow the commonly agreed frequency plans.


Showcase sample is USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) with about 20 kHzKiloHertz (kHz) 10^3 Hz bandwidth.

FMFrequency Modulation sample:


The following frequencies are approximate.

7.92 MHzMegaHertz (MHz) 10^6 Hz (unsure; fixed service/mobile service band)
8.65 MHzMegaHertz (MHz) 10^6 Hz (marine band)
12.8 MHzMegaHertz (MHz) 10^6 Hz (marine band)
14.88 MHzMegaHertz (MHz) 10^6 Hz (fixed service/mobile service band)
15.050 MHzMegaHertz (MHz) 10^6 Hz (aviation band; covered completely)
16.450 MHzMegaHertz (MHz) 10^6 Hz (marine band)

20.8 MHzMegaHertz (MHz) 10^6 Hz (fixed service/mobile service band)

Video Examples[edit]

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