Check your setup

Compatibility and specifications.

Start with your Mac and recording format. For live reception, check the driver and library your receiver needs.

Made for macOS.

An SDR is only needed for live reception. Recording analysis works without one.

Operating system: macOS 14 or later.
Mac architecture: Include your Mac model when requesting beta access so we can confirm the right build for your setup.
For recordings: A supported file. Raw IQ also needs the correct sample rate and sample format.
For live reception: A compatible SDR with its runtime library installed.

Receiver connections.

Sigil loads device libraries at runtime. Missing hardware libraries do not prevent you from analyzing recordings.

Scroll the table horizontally to see all columns.

Receiver integrations available for beta evaluation. Ask us to confirm your device and library versions.
Receiver	Connection	Required library
RTL-SDR	Direct driver	librtlsdr
HackRF One	Direct driver	libhackrf
USRP	Direct UHD driver	libuhd
Signal Hound BB60	Direct driver	Vendor BB API library
HydraSDR RFOne	Direct driver	libhydrasdr
SoapySDR devices	SoapySDR integration	libSoapySDR plus the module for your device

SoapySDR support depends on your installed device module and library versions. It does not guarantee that every SoapySDR device has been tested with Sigil.

Device names belong to their manufacturers. Sigil is not affiliated with or endorsed by them.

Receiver setup instructions

Start with the protocol you know.

Select the relevant decoder for a known signal. For an unfamiliar signal, investigate the modulation and parameters before choosing a decoder.

Scroll the table horizontally to see all columns.

Decoders available for beta evaluation. Support and output vary by signal and beta build; confirm your intended protocol with us.
Decoder	Signal	Output
CW	On-off keyed Morse	Decoded text
OOK	Pulse trains	Bits and supported protocol matching
FSK	Frequency-shift keying	Recovered bitstream and supported protocol matching
POCSAG	FSK paging	Pager addresses and messages
FLEX	2/4-level FSK paging	Pager frames and fields
TPMS	OOK / FSK bursts	Supported tire sensor fields
LRS	FSK paging	Restaurant pager transmissions
NRSC-5	HD Radio / FM IBOC	Program audio, station data, and file services
DVB-S2	Satellite digital video	Transport stream; GSE pcap where applicable
M17	4FSK digital voice	Voice and data frames
RDS	FM subcarrier	Station identity and RadioText
SSTV	Image tones	Robot36 received images
DTMF	Audio tone pairs	Decoded digits
FreeDV	FreeDV 1600 over SSB	Speech and text; requires Codec 2

Decoder output depends on the signal, its quality, and protocol support. Automatic analysis does not decode arbitrary unknown protocols.

Bring a recording.
Take the result with you.

Recording inputs

SigMF captures and metadata
Raw IQ: float32, float64, signed 16-bit, unsigned 8-bit, signed 8-bit, and real float32
WAV: mono audio or stereo IQ; supported sample encodings apply
BLUE / CDIF and SDVR

WAV support includes 8/16-bit PCM and 32/64-bit IEEE float. 24-bit PCM and WAVE_FORMAT_EXTENSIBLE are not supported in the current beta.

Exports by workflow

SigMF captures and WAV audio
Demodulated streams, to a file or stdout
Bits, packed bytes, and frame tables
Saved protocol maps for framing and field interpretation in Bits
MPEG transport stream and DVB GSE pcap, where the decoder provides them

Available export types depend on the workbench or decoder. These are not universal outputs for every protocol.

Open your first recording

Have a particular setup in mind?

Include your Mac model, receiver, and recording format in a beta request.

Request beta access