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Analog HotSpot - Transceiver 70cm UHF 500mW CE - 4th generation

Analog HotSpot - Transceiver 70cm UHF 500mW CE - 4th generation

€209,00 EUR
€209,00 EUR
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Handmade in Belgium. Fulfilment times may vary depending on order volume. Please allow 1–2 weeks for assembly and shipping. If you would like a more precise estimate, feel free to contact us before ordering.
CE Certified — Fully tested for safety, quality, and compliance.
Download CE Certificate (PDF)
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Analog Hotspot Repository

Analog HotSpot - Transceiver - 4th generation

The Analog Transceiver/Hotspot is now in its 4th generation, featuring a redesigned power stage, improved filtering, and a more robust enclosure. We added additional DC-line filtering to eliminate noise sources, improved the thermal design with a precision-machined aluminium enclosure and increased the output power to 28 dBm (~500 mW). The included NoTenna2 attenuates the output to an EIRP of roughly 50 mW by absorbing most of the RF energy. If you need more range, you can simply connect an external antenna.

It is a compact and robust analog communications hotspot built around a Raspberry Pi. Choose between the UHF 70 cm version (400–480 MHz). Thanks to its Wolfson WM8960 DAC/ADC, it runs flawlessly as an EchoLink / SVXLink analog hotspot.
* Currently only an SVXLink Bookworm image is available for SVXLink and EchoLink. 

What’s New in the 3rd Generation

  • Improved DC filtering — additional LC filtering stages drastically reduce noise and ripple on the power line.
  • Enhanced thermal design — precision aluminium top enclosure for superior heat dissipation during continuous-duty operation.
  • Reinforced RF chain — cleaner TX signal, improved stability, and excellent spurious suppression.
  • Higher output power — increased to 28 dBm (~500 mW) for improved range and more reliable linking.
  • Mechanically stronger housing — The aluminum enclosure includes a dedicated antenna aperture to allow Wi-Fi operation while maintaining overall shielding effectiveness.
  • Included NoTenna2 attenuates the output to an EIRP of roughly 50 mW by absorbing most of the RF energy. If you need more range, you can simply connect an external antenna.

Specs at a Glance

Feature Specification
Frequency Range UHF: 400–480 MHz
VHF: 134–174 MHz
Output Power 28 dBm (~500 mW)
RX Sensitivity UHF: −124 dBm @ 12 dB SINAD
Bandwidth 12.5 kHz / 25 kHz
Clock Stability 1 ppm KDS TCXO
Audio Codec Wolfson WM8960 ADC / 1 W DAC (48 kHz)
Compliance CE Certified (UHF worst-case spurious −86.23 dBc)
Power with Pi Zero W ~400 mA RX / ~600 mA TX

Included with the Product

  • Complete tested device in a precision aluminium enclosure
  • Preloaded SD card with our latest image
  • A 2 W terminated indoor antenna (50 Ω)
    .

Key Features

  • ENIG-finished PCB (Electroless Nickel Immersion Gold)
  • Independent TX/RX frequencies, CTCSS, CDCSS
  • Adjustable RX/TX gain levels
  • Status LEDs: Signal/Tone, TX/PTT
  • Ultra-stable 1 ppm TCXO

Power Consumption with Pi Zero W

  • Receive: ~400 mA
  • Transmit: ~600 mA

 

 

 

UHF Version Measurements

All measurements in this section apply to the UHF version. VHF measurements follow in the section below.

Sensitivity Measurements

The 12 dB SINAD sensitivity was determined using a 1 kHz tone FM-modulated at a 2.5 kHz deviation and injected into the receiver. This provides an accurate representation of real-world listening performance, fully aligned with industry-standard SINAD measurement procedures.

Compliance Measurements

All tests conducted with a calibrated Vector Network Analyzer (VNA) and 36 dB attenuator. Worst-case harmonic: −63.56 dBc (3rd), far surpassing ETSI EN 300 220 (≥43 dB below carrier for ≤30 dBm TX). This offers an extra safety margin of >20 dB. Spectrum confirms excellent spurious suppression and clean transmission inside the 12.5 kHz channel.

Compared with top brands like Kenwood, Icom, and Yaesu, our module demonstrates superior spectral purity, placing it on par with commercial-grade equipment.

Spectrum

SVXLink UHF Transceiver2 Spectrum

Harmonics

SVXLink UHF Transceiver2 Harmonics

Channel Power

SVXLink UHF Transceiver2 Channel Power

Mini-FAQ

  • Is it CE certified? — Yes. The hardware meets CE RED requirements and the certificate is available above.
  • Which bands are supported? — UHF 70 cm (400–480 MHz) 
  • Can it act as a hotspot? — Yes. Fully compatible with EchoLink, SVXLink.
  • Digital networks? — Via AnalogBridge (DVSwitch): BrandMeister, OpenDMR, Fusion, etc.
  • Output power? — ~28 dBm (~500 mW).
  • Sensitivity? — UHF: −124 dBm.
  • What antenna is included? — A terminated 50 Ω indoor miniature antenna. Complementary antennas available below for extended coverage.

 

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