Uploaded November 2025 | Updated September 2026, 2 weeks ago
Pat Deegan takes a practical look at Bluetooth 6.0 channel sounding using Nordic’s nRF54L15 DK, breaking down how RTT, phase-based ranging, and the new sounding packets behave once you get them off the bench and into the real world. He digs into RF captures, decodes the packets, rewrites the sample code into a cleaner library, and runs open-air distance tests using reflectors, SDR tools, and his own analysis workflows. If you’re curious about how channel sounding actually performs, what the measurements look like at the signal level, or how to start experimenting with the 54-series devices, this deep dive offers a clear view of what’s possible today and where the challenges show up: bit.ly/43HfnnM
[01:30]-New in the family: nRF54L
[02:15]-Awesomest nRF54L features
[03:00]-BT6 Sounding for Ranging
[06:32]-Channel Sounding RF
[08:32]-Channel Sounding: RTT
[10:35]-Air Exchanges
[15:49]-RTT Exchanges
[17:06]-CS Mode 2 – PBR
[19:38]-Range Algorithms
[22:04]-Freespace Exp 1
[25:21]-Getting Started With the DK
[26:26]-From Demo to Real Apps
[29:10]-Exp 2: Measurement Precision
[32:23]-Exp 3: 2D Measurements
[37:12]-CS in Action: Prototype
[39:37]-Wrapping up
#Bluetooth6 #nRF54 #sdrumox
================================================================================
Engage with the element14 presents team on the element14 Community - suggest builds, find project files and behind the scenes video: bit.ly/3tmdewv
Visit the element14 Community for more great activities and free hardware:
Tech spotlights: bit.ly/3qPrDhM
RoadTest and Reviews: bit.ly/3pV5Bux
Project14: bit.ly/31wbnJY
================================================================================
Pat Deegan
YouTube: youtube.com/@PsychogenicTechnologies
Blog: inductive-kickback.com
Consulting: psychogenic.com
nRF54L15 Development Kit: bit.ly/4p1xXPS
FMCW RADAR playlist
youtube.com/playlist?list=PLPQrZqhah1qGvTfkslUUSC1YRa4i1jHTO
Bluetooth Channel Sounding Specification
bluetooth.com/wp-content/uploads/Files/Specification/HTML/Core-60/out/en/low-energy-controller/channel-sounding.html
Inspectrum fork with my UI and usability addons (like the external symbol parser):
github.com/psychogenic/inspectrum
Software Defined Radio with HackRF video series--great resource for getting started with DSP, IQ samples and SDR:
greatscottgadgets.com/sdr
Nordic devzone ticket: "Channel sounding using multiple reflectors":
devzone.nordicsemi.com/f/nordic-q-a/124351/channel-sounding-using-multiple-reflectors
Kicad:Unlocked course:
kicadunlocked.fullstack-electronics.com/kicad-unlocked-getting-the-most-out-of-kicad-with-proven-strategies
Channel sounding library and sample apps:
github.com/psychogenic/psy54L-channelsounding
Channel Sounding Experiment Data:
github.com/psychogenic/channelsounding-experiment-data
Nordic Developer Academy:
academy.nordicsemi.com
nRF54L Series Express Course:
academy.nordicsemi.com/courses/nrf54l-series-express-course
Pat Deegan takes a practical look at Bluetooth 6.0 channel sounding using Nordic’s nRF54L15 DK, breaking down how RTT, phase-based ranging, and the new sounding packets behave once you get them off the bench and into the real world. He digs into RF captures, decodes the packets, rewrites the sample code into a cleaner library, and runs open-air distance tests using reflectors, SDR tools, and his own analysis workflows. If you’re curious about how channel sounding actually performs, what the measurements look like at the signal level, or how to start experimenting with the 54-series devices, this deep dive offers a clear view of what’s possible today and where the challenges show up: bit.ly/43HfnnM
[01:30]-New in the family: nRF54L
[02:15]-Awesomest nRF54L features
[03:00]-BT6 Sounding for Ranging
[06:32]-Channel Sounding RF
[08:32]-Channel Sounding: RTT
[10:35]-Air Exchanges
[15:49]-RTT Exchanges
[17:06]-CS Mode 2 – PBR
[19:38]-Range Algorithms
[22:04]-Freespace Exp 1
[25:21]-Getting Started With the DK
[26:26]-From Demo to Real Apps
[29:10]-Exp 2: Measurement Precision
[32:23]-Exp 3: 2D Measurements
[37:12]-CS in Action: Prototype
[39:37]-Wrapping up
#Bluetooth6 #nRF54 #sdrumox
================================================================================
Engage with the element14 presents team on the element14 Community - suggest builds, find project files and behind the scenes video: bit.ly/3tmdewv
Visit the element14 Community for more great activities and free hardware:
Tech spotlights: bit.ly/3qPrDhM
RoadTest and Reviews: bit.ly/3pV5Bux
Project14: bit.ly/31wbnJY
================================================================================
Pat Deegan
YouTube: youtube.com/@PsychogenicTechnologies
Blog: inductive-kickback.com
Consulting: psychogenic.com
nRF54L15 Development Kit: bit.ly/4p1xXPS
FMCW RADAR playlist
youtube.com/playlist?list=PLPQrZqhah1qGvTfkslUUSC1YRa4i1jHTO
Bluetooth Channel Sounding Specification
bluetooth.com/wp-content/uploads/Files/Specification/HTML/Core-60/out/en/low-energy-controller/channel-sounding.html
Inspectrum fork with my UI and usability addons (like the external symbol parser):
github.com/psychogenic/inspectrum
Software Defined Radio with HackRF video series--great resource for getting started with DSP, IQ samples and SDR:
greatscottgadgets.com/sdr
Nordic devzone ticket: "Channel sounding using multiple reflectors":
devzone.nordicsemi.com/f/nordic-q-a/124351/channel-sounding-using-multiple-reflectors
Kicad:Unlocked course:
kicadunlocked.fullstack-electronics.com/kicad-unlocked-getting-the-most-out-of-kicad-with-proven-strategies
Channel sounding library and sample apps:
github.com/psychogenic/psy54L-channelsounding
Channel Sounding Experiment Data:
github.com/psychogenic/channelsounding-experiment-data
Nordic Developer Academy:
academy.nordicsemi.com
nRF54L Series Express Course:
academy.nordicsemi.com/courses/nrf54l-series-express-course
