Receiver mode
15 MHz real-time BW, waterfall + digital phosphor, demodulation and IQ.
Ultra-light RF Analyzer
Ultra-lightweight spectrum analyzer / monitoring receiver up to 18.6 GHz
KC908 is an SDR-based wide-band receiver with onboard processing and UI. It combines spectrum analysis, field strength measurement, demodulation and IQ recording in a 900 g handheld form factor.
Overview
900 g, ultra-fast sweep and standalone RF analysis.
Wide-band spectrum & field strength measurement, FM/SSB/P25/TETRA/DMR demodulation, IQ recording to micro‑SD.
Standalone SDR with integrated DSP and UI, compatible with HDSDR and GNURadio.
3 GHz/s sweep, 10 kHz resolution, less than 0.1 s for 300–500 MHz.
Signal source function for RF generation and IQ replay.
Core modes
Analyze, receive, generate and correlate RF signals.
Spectrum mode
3 GHz/s sweep, configurable RBW, list of signals of interest.
Source mode
Full range RF output, AF/FM/PM modulation, 90 dB output range, IQ replay.
Correlator mode
Compares phase and amplitude of two input channels (KC908A/B).
Highlights
- DMR/TETRA/P25 and other digital-voice demodulation.
- Multiple squelch and analysis for monitoring.
- High-volume audio output for noisy environments.
- IQ and audio recording to TF card.
- Zero-to-full span with 3 GHz/s sweeping.
- Full-band RF source with 90 dB adjustable amplitude and IQ replay.
- +10 dBm output up to 18.6 GHz (KC908B only).
- GNURadio connectivity.
Receiver mode
- Multi-protocol demodulation (DMR/P25/TETRA).
- Built-in vocoders for digital voice combinations.
- Fast multi-signal monitoring on one device.
Spectrum mode
Automatic RBW and accurate frequency results at any span up to 18.6 GHz.
Peak list records frequency and POI of detected signals.
Signal Source
Play IQ file record by KC908 or import files to Micro SD card, also can set amplitude and replay frequency. This is a useful feature for testing digital systems.
The KC908B has the most powerful signal source in the series, with a maximum output amplitude of +10dBm 18GHz and a synchronous tuning filter.
RF signal output covering the entire frequency range, supporting AM/FM/PM modulation modes, 90dB amplitude setting range. Most importantly, IQ replay is supported!
Correlator
Only in KC908A/B models.
Compare the amplitude and phase difference of two port input signals.
Performance
With professional and precise hardware design, high performance is realized in a very small volume, and strict RF front-end design, even the weakest signals can be detected under the strong interference field.
KC908 has a built-in multi band Pre-filter that automatically switches to the current operating frequency.
RF front-end with multi stage amplifiers and attenuators, automatically set for optimal different signal level
Main parameters
| Item | Min | Typical | Max | Note |
|---|---|---|---|---|
| Frequency range | 100 kHz | 4/6/10.8/18.6 GHz | ||
| Real time bandwidth | 1 kHz | adjustable | 15 MHz | |
| Analysis bandwidth | 1 Hz | adjustable | 2 MHz | up to 8 MHz |
| Demodulation bandwidth | 150 Hz | adjustable | 300 kHz | |
| 100% POI (note 3) | 210 us | SPAN=15 MHz | ||
| Level measurement range | +20 dBm | |||
| Level measurement uncertainty | 1.5 dB | Receiver mode | ||
| Noise floor | -120 dBm | @12 kHz BW, avg | ||
| Normalized noise floor | -163 dBm/Hz | Max Gain, avg | ||
| Instrument noise coefficient | 13 dB | Max Gain | ||
| Third-order intercept point | -42 dBm | 46 dBm | REF = -70 dBm | |
| First image suppression | 50 dB | 70 dB | REF = 20 dBm | |
| IQ image suppression | 60 dB | |||
| Residual response (note 4) | -110 dBm | Port N.C | ||
| Spurious response | -90 dBm | With Whip Antenna | ||
| Signal generator output level (note 5) | -80 dBm | 10 dBm | 1 dB Step | |
| Battery life | 4 h | |||
| Weight | 900 g |
Note: for full specifications please refer to the user manual.
Need a quote or model comparison? Visit the official store.
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