Review on 📻 Hima MMDVM Hotspot Spot Radio Station+ Antenna+OLED+ Black Case: Supporting P25 DMR YSF D-Star UHF, WiFi Enabled Digital Voice Modem for Raspberry Pi-Zero W, Pi 3, Pi 3B+ by Gopal Baltimore

I used this board for a Pi-Star Access Point. I've used it on both Raspberry Pi 4 and Raspberry Pi Zero WH and it worked better on both. I finally decided to keep the hotspot I created with the Pi Zero WH and use the Pi 4 for something else. This board works equally well on both, although the Pi Star web interface is slower on the Pi Zero WH. The display pins turned out to be short so I didn't have to worry about cutting them to avoid hitting the Pi GPIO pins. It was easy to connect, download software and set up. There was no paper or label with the Tx and Rx offsets, but I found this worked without adjusting them enough - I got a BER of around 1.6%. I've tested a few different offsets manually and found that somewhere between -150 and -200 gives the best BER, but really 1.6% isn't even that objectionable. Different boards may have slightly different offset requirements. If I had to build another hotspot, I would use this board again.