P25 PiZero Hotspot

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This wiki serves as a reference to creating a MMFVM Hotspot using a Raspberry Pi Zero. This may work for other devices but is untested and unconfirmed.


Picking a frequency:

The following frequencies are being used in Canada and US for DV Simplex (Hotspots).

(For Other countries, please check the Bandplan for your area)

Band  Frequency

2 m     145.670 MHz

2 m     145.750 MHz

2 m     145.790 MHz     

2 m     147.525 MHz   (Fusion)  

2 m     147.555 MHz  

70 cm 431.100 MHz     

70 cm 433.300 MHz     

70 cm 434.400 MHz     

70 cm 445.800 MHz     

70 cm 446.800 MHz     

Please do NOT use AMSAT/SAREX/ARISS frequencies.

(145.500-145.590, 145.800-146.000, 435.000-438.000mhz)


Reference: https://ve1cra.net/main/dmr.html#frequencies


Creating Pi Image:

  1. Get an SD Card Formatter and Imager (Windows can be used to format, and BalenaEtcher is a recommended Imager)
    1. SD Card must be at LEAST 4GB size
  2. Format SD Card with FAT32
  3. Image Pi with correct image from pi-star site: Click Here
  4. Load SD card into RaspPi and allow to boot


Configure Pi-Star:

  1. Connect to RaspPi via Wifi
    1. SSID: pi-star
    2. Password: raspberry
  2. Navigate in browser to http://pi-star.local/
  3. Log into pi-star (default login is same as wifi login)
  4. Configure and