This is small so you can put a little power bank on it place it in your pocket and have it with you all the time like I do. I just use my phone's hotspot for internet, and it runs about 5 to 7 hours. This is Duplex so no more waiting for the long-winded talker, go to time slot 1 or 2 and put it on a new talk group. Now you can switch back and forth between talk groups easier, it is like having 2 hot spots. This one has a Waveshare UPS and battery backup and a clear C4LABS case.
Duplex MMDVM Hotspot UHF/VHF P25 DMR YSF D-Star M17 plus more. Running Raspberry Pi Zero W with OLED
Running Pi-Star: 4.1.8 (Latest version)
Raspberry Pi Zero W
Pi-Star loaded on 16G SD card you just need to configure your call and Wi-Fi and other info than you're on the air.
Features:
-Duplex Hotspot with stand for mobile use or home
-High performance 32-bit ARM processor
-Supports DMR, P-25, D-Star and System Fusion M17
-Fully tested
-Antennas Built onboard nothing sticking out
-OLED Screen
WIDELY COMPATIBLE: Supports DMR, P-25, D-Star and System Fusion
Differences in Duplex and Simplex: In Duplex mode, have 2 time slots, and Tx and Rx can do at the same time
Radio Frequency: In duplex mode, support 430-440 uhf, in simplex mode support both uhf 430-440MHz and vhf 140-150MHz
Best adjusted: TX =0, RX=0 need no offset.
Modem select: STM32-DVM/MMDVM_HS-Raspberry pi Hat(GPIO)
3D Silver, Blue Printed Case: For high RF performance over metal case.
Antenna: On board two antennas and OLED
Clear C4LABS case and Waveshare UPS with 1000mAh Battery.
The UPS HAT (C) is an uninterruptible power supply module specialized for Raspberry Pi Zero series. It incorporates Li-po battery switching charger with path management, voltage boost chip, and voltage/current monitor which allows monitoring the battery operating status via I2C bus.