ETMY ET-C28 4G PoC Radio: 12 Questions Answered on Features, Specs & Use Cases
ETMY ET-C28 4G PoC Radio: 12 Questions Answered on Features, Specs & Use Cases
The short answer: The ET-C28 is a 4G LTE PoC (Push-to-Talk over Cellular) network trunking radio from ETMY that works with any Nano SIM — no base station or licensed frequency required. It supports group, single and all calls, packs a 1850mAh battery with 110 hours of standby, charges via Type-C, and weighs just 123g, making it the entry-level choice for taxi fleets, hotel teams, retail security and construction crews.
In logistics fleets, hotels, supermarkets and construction sites, teams need fast, reliable coordination — and traditional radios are increasingly limited by range and frequency coverage. The ET-C28 combines the one-touch feel of a professional walkie talkie with the wide coverage of cellular networks: you keep the familiar radio workflow while breaking the distance barrier. Here are 12 questions that cover everything the ET-C28 does.
💡 Quick check: If your team needs nationwide or cross-border push-to-talk, no base station build-out, and a tight budget — the ET-C28 was built for exactly this. Want to compare more models? See the ET-C11 mid-range upgrade guide at the end, or step up to the ET-C11 mid-range upgrade for a color display, GPS option and dual SIM.
Q1: What kind of device is the ET-C28, exactly?
The ET-C28 is a PoC Network Trunking Radio (Push-to-Talk over Cellular). Instead of using traditional VHF/UHF licensed frequencies, it takes a Nano SIM card and communicates over FDD-LTE / TDD-LTE networks for nationwide — even international — voice dispatch. It runs on the official PoC Global platform, which means as long as your carrier has 4G coverage, your team can talk in groups. No base stations. No frequency licensing. No range anxiety.
One-line takeaway: Traditional radios are limited by distance; PoC radios are limited by signal — if there's 4G, you're connected.
Q2: Which network bands does it support?
The ET-C28 supports both FDD-LTE and TDD-LTE, covering the mainstream bands:
| Mode | Bands |
|---|---|
| FDD-LTE | Band 1 / 3 / 5 / 8 |
| TDD-LTE | Band 34 / 38 / 39 / 40 / 41 |
These bands cover the common 4G frequencies used across Asia, Europe, the Middle East and Latin America. As long as the local carrier operates on one of these bands, the ET-C28 connects right away — literally "swap the SIM and go." That makes it a practical choice for cross-border fleets and multi-region construction teams.
Q3: How flexible is the calling? Is team dispatching easy?
Very. The ET-C28 packs multiple call modes to handle everything from a private one-on-one chat to a full-team broadcast:
- Group Call — one talks, the whole group hears; ideal for shift coordination.
- Single Call / Private Call — encrypted one-to-one conversation for sensitive business talk.
- All Call — one push reaches everyone; perfect for emergencies or major announcements.
- Voice broadcast control — administrators can control who broadcasts, so channels don't get jammed.
- Provincial level control (hierarchical control) — supports multi-level org structures: HQ, region, city and team can be managed separately.
- Group selection / member selection — quickly switch groups or target specific members.
Put together, these functions give you a pocket-sized dispatch console.
Q4: How many contacts can it store?
The ET-C28 holds a 100-contact list, more than enough for small and mid-size teams. On top of that, 20 quick call buttons let you assign your most-used teams, dispatchers or security leads to direct-dial keys — no menu digging when things get busy, just press a number and talk. That combination speeds up response and improves safety.
Q5: Can the prompt tones and volumes be customized?
Yes. The ET-C28 lets you control:
- BEEP volume control — adjust key-press feedback volume, whether you're in a quiet hotel or a noisy construction site.
- Call prompt tone control — turn incoming/outgoing call and group-join alerts on, off, or adjust them to avoid disturbance.
These details are small, but they decide how comfortable the radio feels over a full shift.
Q6: Can it be used as a phone too?
Yes. The phone function means the ET-C28 isn't just a radio — it can make ordinary phone calls like a mobile handset. Field staff don't need to carry both a walkie talkie and a phone; one device covers internal group chat and external calls, lightening the gear load.
Q7: What thoughtful extras does it include?
The ET-C28 comes with several practical utilities:
- Flashlight function — for night patrols, underground parking and equipment checks.
- Low power reminder — warns you before the battery dies so you're never caught off guard mid-shift.
- Local check for updates — check for firmware updates directly on the device to keep it in top shape.
- View local account / ICCID — lets admins check the device account and SIM ICCID for asset management, SIM binding and troubleshooting.
Q8: How's the battery life? And is charging convenient?
The ET-C28 uses a 1850 mAh battery with an official standby time of up to 110 hours. In normal shift use, expect roughly 1–2 days between charges. Charging goes through a Type-C USB port — the same standard as modern phones and power banks — so you'll rarely be stuck without a compatible charger on the road.
🔋 Need longer battery life or GPS? The ET-C28 is built for light weight and value. If your team needs a 3000mAh battery, dual SIM and optional GPS, step up to the ET-C11 mid-range upgrade guide.
Q9: How big is it? What about the screen and audio?
Dimensions are 116 × 51 × 19 mm and it weighs just 123 g — lighter and slimmer than many traditional radios, comfortable on a belt clip or lanyard all day. The front has a color screen display, so groups, signal, battery and contacts are easy to read at a glance. Audio output is 2W with ≤5% distortion, so instructions stay clear even in noisy environments.
Q10: Which industries and scenarios fit the ET-C28?
According to the official brochure, the typical use cases are:
- Taxi fleet (taxis & ride-hailing) — live dispatching, road-condition updates, emergency calls.
- Construction site — crew coordination, safety alerts, cross-area collaboration.
- Hotel — instant communication across housekeeping, security, engineering and front desk.
- Large supermarkets — unified dispatch for loss prevention, cashiers, restocking and cleaning staff.
Anywhere people are spread out, need fast response, and rely on stable calls — the ET-C28 is worth a look.
Q11: What's in the box? Can we use it right away?
Standard accessories include:
- Host (radio unit)
- Battery
- Back clip
- Sling (lanyard)
- Type-C charging line
- Charger
Once you insert a Nano SIM and configure your PoC platform account, you're ready to go.
Q12: Does it have GPS or waterproofing?
Per the official spec sheet, the ET-C28 lists GPS as N/A and Waterproof as N/A. This device is focused on rock-solid voice dispatch and basic coordination. If you need location tracking or outdoor waterproofing, pair it with a dedicated tracking solution — or move up the lineup:
- Need GPS / dual SIM / bigger battery → ETMY ET-C11
- Need true waterproofing for diving, marine or heavy rain → ETMY ET-538
Summary: Who is the ET-C28 for?
If you're looking for a low-cost, easy-to-use, nationwide 4G PoC radio with rich calling modes, the ETMY ET-C28 is a very pragmatic pick. It skips flashy extras and nails the core job of any radio: hear clearly, reach instantly, and manage your team.
- Tired of the range limits of traditional radios? → Pick it.
- Need one-to-many, group, and tiered management? → Pick it.
- Want a slim body, long standby and universal Type-C charging? → Pick it.
Want to compare the ET-D330, ET-C11 and ET-C28 side by side? Read our ET-D330 vs ET-C11 vs ET-C28 comparison guide — audio, battery, DMR vs PoC and waterproofing, answered in 12 questions.
Need bulk pricing or want to confirm it fits your use case? Contact us for a B2B quote, or tell us your scenario and we'll help you judge whether the ET-C28 is the right fit.
Quick Spec Sheet
| Item | Spec |
|---|---|
| Model | ETMY ET-C28 |
| Type | PoC Network Trunking Radio |
| Network | FDD-LTE / TDD-LTE |
| Bands | FDD-LTE Band 1/3/5/8; TDD-LTE Band 34/38/39/40/41 |
| Platform | PoC Global |
| SIM | Nano SIM |
| Dimensions | 116 × 51 × 19 mm |
| Weight | 123 g |
| Battery | 1850 mAh |
| Standby | 110 hours |
| Charging | Type-C USB |
| Display | Color screen |
| Audio output | 2W |
| Distortion | ≤5% |
| Rated voltage | 3.7V |
| GPS | N/A |
| Waterproof | N/A |
