{"id":3470,"date":"2026-10-27T14:54:53","date_gmt":"2026-10-27T06:54:53","guid":{"rendered":"http:\/\/www.alihsolar.com\/blog\/?p=3470"},"modified":"2026-10-27T14:54:53","modified_gmt":"2026-10-27T06:54:53","slug":"what-is-the-maximum-number-of-users-that-4g-lte-poc-radio-can-support-in-a-group-4f60-d9912f","status":"publish","type":"post","link":"http:\/\/www.alihsolar.com\/blog\/2026\/10\/27\/what-is-the-maximum-number-of-users-that-4g-lte-poc-radio-can-support-in-a-group-4f60-d9912f\/","title":{"rendered":"What is the maximum number of users that 4G LTE Poc Radio can support in a group?"},"content":{"rendered":"

If you\u2019re someone who\u2019s ever had to coordinate a large field crew \u2013 say, a construction site, a security detail, or a event staffed across a massive festival grounds \u2013 you\u2019ve probably hit a wall with regular two-way radios. They cut out, lag, or just plain stop working when you need 10, 20, or 50 people on the same channel. That\u2019s where 4G LTE Poc (Push to Talk over Cellular) radios come in, and a question I get all the time is: \u201cWhat\u2019s the maximum number of users a 4G LTE Poc radio can handle in one group?\u201d 4G LTE Poc Radio<\/a><\/p>\n

<\/p>\n

As a supplier of these radios, I can\u2019t just throw out a random number \u2013 because it\u2019s not that simple. The answer depends on a bunch of stuff, and over the years, I\u2019ve seen firsthand how even small shifts in setup can make a huge difference. Let\u2019s break this down like we\u2019re chatting over a coffee (no boring jargon, promise).<\/p>\n

First, let\u2019s get the basics straight: 4G LTE Poc radios work by piggybacking on existing cellular networks, unlike traditional UHF\/VHF radios which are limited to a local frequency range. That means their group size isn\u2019t tied to a hardware frequency cap \u2013 it\u2019s tied to the network\u2019s capacity, how the Poc platform is set up, and what your crew actually needs to do.<\/p>\n

Here\u2019s the thing most people don\u2019t realize: a \u201cgroup\u201d in Poc terms isn\u2019t just a list of numbers you add to an app. It\u2019s a dynamic, live feed of audio, maybe some text messages, location pins, and even video if you\u2019re using the right radios. Every single user on that group is sending a tiny chunk of data when they press the PTT (Push to Talk) button, and receiving the same feed as everyone else. So the math here is all about how much data the network can handle at once, plus how your Poc server is configured.<\/p>\n

Let\u2019s start with the sweet spot most of our customers see: for everyday use, groups of 100 to 150 users are totally standard, no issues. I\u2019ve got a construction client out in Arizona with 120 field supervisors, safety officers, and equipment operators all on one Poc group, and they\u2019ve never complained about lag or dropped calls. Another customer is a festival security team \u2013 they had 110 guards on the same group during a 3-day country music festival last summer, and even when everyone was talking at once (which happens when a crowd surge is reported), it held up.<\/p>\n

But wait, what if you need way more? Say 300, 500, even 1,000 users in one group. Is that possible? Technically, yeah \u2013 but only if you set it up right. I\u2019ve seen a logistics company use a private 4G LTE network (think a dedicated cellular tower just for their business) to run a Poc group of 800 warehouse and delivery drivers. Their setup didn\u2019t rely on public Verizon or T-Mobile; they had their own spectrum, so they could carve out enough bandwidth to handle all those PTT feeds without any crowding.<\/p>\n

Here\u2019s where people mess up: if you try to cram 500 users onto a public consumer cellular network, you\u2019re gonna have a bad time. Public networks are built for people browsing Instagram, texting, and making calls \u2013 not for 500 people all transmitting audio at the same time. During peak hours, like 9 AM on a weekday, that network is already stretched thin, add a big Poc group on top, and you\u2019ll get choppy audio, people missing half of what\u2019s said, or even the app freezing.<\/p>\n

Let\u2019s talk about the variables that shift that number, because that\u2019s where it gets interesting.<\/p>\n

    \n
  1. \n

    PTT Usage Habits<\/strong> \u2013 This is huge. If your group is polite, only one person talks at a time, the network barely breaks a sweat. We\u2019ve had customers with 200 users on a group where people take turns, and it works flawlessly. But if you\u2019ve got a rowdy group \u2013 like a construction crew troubleshooting an emergency, where 10 people are all pressing PTT at the same time \u2013 that\u2019s way more data. In that case, you might see the sweet spot drop to 80 or 100 users, because all that simultaneous talk is eating up bandwidth.<\/p>\n<\/li>\n

  2. \n

    Network Type<\/strong> \u2013 Public vs. private, 4G vs. 5G? Wait, we\u2019re talking 4G here, but even 4G networks have tiers. Public LTE is okay for small groups, but private LTE networks (which we help customers set up) are way more reliable for larger groups. A private network lets you allocate exactly how much bandwidth your Poc group gets, so even if you have 500 users, you can make sure there\u2019s enough data for every PTT message. Some of our mining customers use private LTE networks for 400+ miners on one Poc group, and they never have issues \u2013 even underground, where public cell signals don\u2019t reach.<\/p>\n<\/li>\n

  3. \n

    Platform Configuration<\/strong> \u2013 Not all Poc servers are the same. Some off-the-shelf Poc platforms are designed for small businesses, so they cap groups at 200 users max. But the ones we supply are on enterprise-grade servers that can scale way higher \u2013 if you\u2019ve got the network to back it up. We\u2019ve had a municipal government client set up a group of 600 emergency responders during a parade, using our Poc radios, and it worked because we tuned the server to prioritize their group\u2019s traffic over other data.<\/p>\n<\/li>\n

  4. \n

    Extra Features You\u2019re Using<\/strong> \u2013 If your group is just doing PTT talk, that\u2019s the lightest load. But if you\u2019re adding stuff like real-time location tracking, text messaging, even video clips, that adds more data. For example, if every single user is sharing their live location, that\u2019s a constant data stream on top of the PTT audio. So a group of 150 people with location tracking might feel like a group of 200 people only talking. We had a security team that added video streaming during a large event, and they had to split their group into two smaller groups of 120 each, because the video made the original too laggy.<\/p>\n<\/li>\n<\/ol>\n

    Now, let\u2019s answer the big question: what\u2019s the absolute maximum I\u2019ve seen a 4G LTE Poc radio group handle? I\u2019ve seen it work for a one-off event: a customer had 1,200 people on a Poc group during a city-wide marathon, using a temporary private LTE network we rented for the weekend. But that\u2019s a special case \u2013 temporary, dedicated spectrum, no other users on the network, and they used a \u201ctalk burst\u201d feature that only lets one person transmit at a time, even if multiple press PTT. It worked for that event, but you can\u2019t run that 1,200-person group every day on a public network or even a standard private network.<\/p>\n

    Most of our regular customers stick to 150 or less for daily use, because that\u2019s where you get perfect audio, no lag, and no dropped messages. If you need more than that, we don\u2019t just sell you radios \u2013 we help you figure out the right network setup, whether that\u2019s adding extra bandwidth, using a private tower, or splitting your group into smaller sub-groups that can communicate with each other. For example, if you have 300 users, split them into two groups of 150, and use a dispatch feature that lets a supervisor talk to both groups at once. That way, you get the reliability of smaller groups without losing the ability to coordinate the whole crew.<\/p>\n

    I should also mention that there\u2019s a difference between \u201cthe number of users on a group\u201d and \u201cactive users at the same time.\u201d A lot of people ask for max number, but they forget that not everyone is talking at once. Even if you have 300 users registered to a group, only 10 or 15 will be pressing PTT at any given time. That\u2019s a key point \u2013 the max number isn\u2019t about how many are registered, it\u2019s about how many are transmitting at the same time. We\u2019ve had a customer with 400 registered users, but at peak, only 20 are talking, so it works perfectly on a public network. That\u2019s a way better metric to look at than total registered users.<\/p>\n

    So, if you\u2019re trying to figure out what works for your team, here\u2019s a quick cheat sheet I give all our customers:<\/p>\n