2023-K-141

Analog FM Transceiver HAT 70cm UHF or 2m VHF

2023-P-141 SHOP 

Experience the power of the Analog FM Transceiver HAT, a cutting-edge HAT designed exclusively for the Raspberry Pi Zero 2W.

Sold together with https://rf.guru/2021-k-053, our PI Zero clean power supply to enable a solid and clean 13.8V DC input.

Packed with a formidable 2W UHF or VHF (70cm/2m) radio module, this versatile device is accompanied by a state-of-the-art DAC/ADC, enabling it to function flawlessly as an EchoLink/SVXLink analog simplex repeater or hotspot.

The board includes an on-board low-pass filter designed to block harmonics from reaching the antenna output. This enables seamless connection of the transceiver module to an outdoor antenna, without encountering any problems. Additionally, it provides the option to drive a PA for enhanced output power capabilities.

What's more, with the combination of a Raspberry PI Zero 2W and SVXLink with AnalogBridge (DVSwitch), you gain access to digital networks, including the Brandmeister and OpenDMR network, unleashing a world of limitless possibilities.

This module can also serve as a remote transceiver module, featuring remote speaker and microphone functionality (please note that the software for this feature is still under development).

Datasheet

  • Raspberry PI Pin compatible
  • PCB ENIG (Electroless Nickel Immersion Gold)
  • UHF 70cm band frequency: 400~480 MHz
  • VHF 2m band frequency: 134~174 MHz
  • Tx and Rx frequency, Tx and Rx CTCSS, CDCSS can be set separately.
  • Band width 12.5KHz / 25 KHz
  • Output power VHF 1.9W/32dBm UHF 2W /33dBm
  • RX Sensitivity:-124 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 Zero2 W

  • Receive modus 1.6W/120mA
  • Transmit modus 5W/370mA

Kit Components

While we offer the option to purchase pre-assembled devices for your convenience, kit assembly is fairly easy (only 5 parts to solder) !

  • 2 Audio transformers
  • 2 Pin Jumper
  • 40 Pin Header
  • SMA socket
  • UHF or VHF SA868 Radio module
  • 4x 2.5MM Torx screws
  • 4x 11m Plastic standoffs

Enclosure

(in development)

Antenna

The Diamond SRH701 is an excellent match for our transceiver hat!

Software

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