… but then there is the free Zello PTT app that you can install on a Chinese low cost PoC (or Network Radio like they are also called).
I have a home gateway setup with free Zello for Windows, that is connected to a vhf radio tuned to our local ham FM analog repeater. It runs 24/7/365 flawlessly.
It allows us, ham owners of Network Radios, to use the available 4G LTE cellular network to link-back to our friends operating with their radios on the local repeater from anywhere we are.
I use a 1Gig/month data SIM for 10$ CDN, and if I ever go over this limit, the account is shared with my cell phone data plan.
Some of us have “mobile” format-size Network Radios, some others like me have “portable” format (I have a Uniwa F40 —120$— since many years, it traveled with me many thousand km thru the years!)
I did used it with family members while traveling in two cars. They used the free Zello on their phones, so it avoided dialing a phone number each time we wanted to chat about this or that while traveling.
I also run 3 radio “feeds” (listen-only) that feeds 3 separate Zello channels for my radio scanner hobby.
The advantages of using a setup like that are :
- the RF signal (at my receiving station) is always top notch (external antenna) so on my PoC, the reception is of course crystal clear.
- the feeds are recorded on my portable Network Radio, meaning I can go back any time to listen to what I may have missed.
- if two or more feeds are active at the same time, the feeds are played *sequentially* on the PoC (meaning you never loose a transmission because the radio was scanning and stopped on a busy channel)
- the battery consumption is ridiculously less than on a traditional radio (today was a snowstorm day, with all three channels pretty busy, I listened all day, and my PoC battery is still 85% good!).
- the audio on the PoC is wayyy much louder than any cellphone used freehand (in the order of 1watt of audio for portable and like 3 or 4 watts on mobile PoCs).
‘Hope this helps a bit more understanding “PoC” radios !