Characteristics
Receiver
- SDR in reception:
- RTL-SDR (example: NESDR SMArt from Nooelec) or,
- HackRF One or,
- Adalm-Pluto
- Frequency: 1 MHz to 6 GHz (depending on the chosen SDR)
- Spectral band processed: 2 MHz on 2048 points (depending on the chosen SDR)
- Audio: 1 channel
- Demodulation: NBFM, WBFM, AM, SSB or CW
- Automatic band scan
- Equalizer on the audio channel
- Notch filter
- Noise filter
Transmitter
- Hardware:
- HackRF One or,
- Adalm-Pluto (common with the receiver) or,
- NBFM VHF / UHF SA818 module from G-NiceRF
- Frequency: 1 MHz to 6 GHz (depending on the chosen SDR)
- Power: 1 dBm to 30 dBm (depending on the chosen SDR)
- Audio: 1 channel
- Modulation: NBFM, SSB or CW
- Transmitter modulation compressor
- Audio equalizer
- CTCSS encoder
- DTMF encoder
- 1750 Hz encoder
- Programmable frequency offset for relays
- Automatic CW Manipulator (Iambic A and Iambic B)
Radio processing
- Hardware:
- Orange Pi Zero 2 or Orange Pi One Plus, or
- Raspberry Pi 4B (2 GB)
- Software:
- Operating System: Armbian / Debian Bullseye
- Web server: Apache 2
- Signal processing: GNU Radio 3.8
- Remote SDR (version v3 minimum)
- Html
- Javascript
- Python 3
- Network interface: wired Ethernet or WIFI
- Interfacing with Gpredict to compensate the Doppler of low orbit satellites
- Interfacing with GS-232 type rotator
- Display and Audio: WEB page on PC, tablet or smartphone
May require the addition of an external oscillator and the extension of the Adalm-Pluto band.