Available as a complete product with CE certification: https://shop.rf.guru/products/2025-ce-241-u

Warning: Only the complete product carries CE certification; PCBs do not!

Included

• our aluminium enclosure (black, dark-red or dark-green)
• Raspberry Pi Zero 2 W
• 32GB SD card
• 701SP Nagoya Antenna

Experience the power of the SVXLink Analog Transceiver2, a cutting-edge HAT designed exclusively for the Raspberry Pi Zero.

Equipped with a powerful UHF 70 cm band radio module, this versatile device features a cutting-edge DAC/ADC, allowing it to operate seamlessly as an EchoLink/SVXLink analog hotspot, an EchoLink/SVXLink analog simplex repeater, or even an APRS 2m Digipeater.

What's more, with the combination of a remote SVXLink with AnalogBridge (DVSwitch), you gain access to digital networks, including the Brandmeister and OpenDMR network, unleashing a world of limitless possibilities. 

 Datasheet

• Raspberry PI Pin compatible
• PCB ENIG (Electroless Nickel Immersion Gold)
• UHF 70cm band frequency: 400~480 MHz
• Tx and Rx frequency, Tx and Rx CTCSS, CDCSS can be set separately.
• Bandwidth 12.5KHz / 25 KHz
• Output power 27dBm / 500mW
• RX Sensitivity 12dB SINAD：-109 dBm
• Adjustable RX en TX volume
• 1 ppm KDS TCXO crystal
• Wolfson WM8960 ADC/ 1W DAC 48khz
• Signal/Tone Blue LED
• TX/PTT Blue LED

Power consumption in combination with a Raspberry PI Zero W

• Receive modus 220mA
• Transmit modus 370mA

Software

https://github.com/Guru-RF/SVXSpot?tab=readme-ov-file#svxlink-bookworm-image

https://github.com/Guru-RF/SVXSpot
https://github.com/Guru-RF/SVXSpotMain

Sensitivity Measurements

The 12 dB SINAD was calculated by processing a recording of a 1 kHz tone generated with FM modulation at a 2.5 kHz deviation, which was then fed into our module.

Compliance Measurements

All measurements were conducted using a calibrated VNA and a calibrated 36dB attenuator. The worst harmonic observed is the third, measured at -63.56 dBc, which is significantly better than the requirements of the CE-RED directive for devices under 30dBm output power. According to the directive, spurious emissions must typically be at least 43 dB below the transmitter power for frequencies below 30 MHz, and 60 dB below for those above 30dBm. Our device comfortably exceeds these limits, even surpassing the stricter standards for high-power devices. 😉

The spectrum analysis confirms similarly excellent performance for spurious emissions, with no significant unwanted emissions detected. Additionally, the device transmits cleanly within the 12.5kHz channel bandwidth, ensuring precise and reliable operation.

When compared to leading brands such as Kenwood, Icom, and Yaesu, our device holds its own:

• Our measured spurious emission levels of -63.56dBc clearly demonstrate superior spectral purity.

This level of performance ensures compliance with international standards and places our device in the same league as the most respected brands in the market.

Spectrum

Harmonics

Channel Power