Universal Non-Root SDR Hardware Access

Hardware AccessPre-configured

Overview & Purpose

Hardware transceiver access in security distributions frequently forces users into running analysis tools as root. TelcoChisel implements automated udev device arbitration, mapping Ettus Research USRP (B200, B210, X300), Great Scott Gadgets HackRF One, Nuand BladeRF 2.0 micro, LimeSDR, RTL-SDR, Airspy, and PlutoSDR to the standard unprivileged `plugdev` group while disabling USB power autosuspend.

Verification Command

Run the following to confirm this configuration is active on your system:

Universal Non-Root SDR Hardware Access — Verification
SoapySDRUtil --find

Configuration Details & Steps

TelcoChisel applies these settings automatically at ISO build time. The following steps document each configuration item:

  1. 1
    Enumerate all connected SDR transceivers via the vendor-neutral abstraction layer: SoapySDRUtil --find
  2. 2
    Query Ettus Research USRP transceivers for onboard FPGA firmware and daughterboard sensors: uhd_usrp_probe --args='type=b200'
  3. 3
    Query connected Great Scott Gadgets HackRF hardware and firmware versions: hackrf_info
  4. 4
    Check Nuand BladeRF FPGA version and USB speed negotiation: bladeRF-cli -e info

Troubleshooting

Common Issues
If a connected SDR is recognized by `lsusb` but fails to open in software with 'Access denied', verify that your current user account belongs to the `plugdev` group (`id -nG`) and trigger a udev rule refresh with `sudo udevadm control --reload-rules && sudo udevadm trigger`.

Frequently Asked Questions

Why is USB autosuspend disabled for SDR devices?

USB power management can automatically put idle transceivers into low-power sleep states. In bursty RF signal environments, the latency of waking the USB controller drops the first hundreds of radio samples, causing synchronization failure.

Does TelcoChisel support both USB 2.0 and USB 3.0 transceivers?

Yes. High-bandwidth transceivers like USRP B210 and BladeRF 2.0 micro utilize USB 3.0 SuperSpeed (5 Gbps), while HackRF and RTL-SDR operate over USB 2.0 HighSpeed (480 Mbps).

Can multiple SDR transceivers be used simultaneously?

Yes. Each transceiver is addressed by its unique serial number or bus ID (e.g. `uhd_find_devices` or `hackrf_info -d <serial>`), enabling full-duplex transmission and multi-carrier sniffing setups.

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