Learn more about the openSPOT4
More information about the
openSPOT4
The openSPOT4 is our latest battery powered, portable, standalone digital radio internet gateway (hotspot) designed mainly for amateur radio use. You can talk with others on digital radio networks by using an openSPOT4, Wi-Fi internet access, and your digital transceiver.
Our team has completely redesigned both the hardware and software, with a multicore CPU and a completely new Wi-Fi module, which means both the web interface and update downloads are blazing fast. The built-in battery has a larger capacity, and the device can work much longer than our previous battery-powered models thanks to the new hardware and optimized software.
openSPOT4 Pro
The openSPOT4 Pro extends the feature set of the openSPOT4 with onboard transcoding hardware:
- The openSPOT4 Pro has the best voice quality in cross mode operation
- Supports D-STAR® cross modes: use your D-STAR® transceiver to access DMR, C4FM, NXDN® networks, or your DMR, C4FM, NXDN® transceiver to access D-STAR® networks
- You don’t need a transceiver for the Pro! Use the free SharkRF Link app on your computer or phone to talk.
- Supports call audio playback on the web interface
- Supports 10 configuration profiles
Compatible digital radio protocols and networks
- DMR (BrandMeister, DMRplus, DMR-MARC, Phoenix, XLX, TGIF and others)
- D-STAR® (DCS, REF/DPlus, XRF/DExtra, XLX)
- System Fusion®/C4FM (FCS, YSFReflector, XLX)
- NXDN® (NXDNReflector)
- P25 (P25Reflector)
- POCSAG (DAPNET)
- APRS® messaging and location data forwarding (APRS-IS)
Supports cross modes* (example: talk with your D-STAR® transceiver on DMR, and with your DMR transceiver on D-STAR® networks).
See the product specifications here.
Beer and transceiver are not included in the box.
Key features
- Built-in Li-ion battery with up to 30 hours of operation**
- Built-in transcoding hardware* for the best voice quality in cross mode operation
- Built-in Wi-Fi and radio antenna
- Built-in beeper with audible status tones
- Free SharkRF Link app for computers and phones for easy web interface access. You can use the app as a transceiver with the Pro version!
- Web-based easy and fast Quick Setup
- Call audio playback on the web interface*
- No additional hardware required, works out of the box without a computer
- USB-C charge cable included in the box
- Use even in your vehicle with extreme fast bootup and USB power supply tolerance
- User manual available online
- 2 year warranty*** with official support in email / community forum
- Web interface for configuration and monitoring
- Create your own private radio network using our open source server application
* Hardware transcoding and call audio playback on the web interface is only available in the openSPOT4 Pro. The list of openSPOT4 and openSPOT4 Pro cross modes can be found here.
** The length of the battery discharge time is affected by the device’s operation mode (transmitting or receiving, or cross mode is used), traffic on the connected Wi-Fi network (even if the traffic is not to/from the openSPOT4), Wi-Fi signal quality, web interface is opened.
*** The battery and the USB-C charger cable have only one year long warranty period (70% battery end of warranty capacity).
State of the art hardware and software design
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The openSPOT4 and the openSPOT4 Pro are the only complete hotspot on the market which is:
- customly designed as a fully dedicated device for standalone operation (no Raspberry Pi® or anything like that is used or needed)
- has a built-in battery
- has built-in transcoding hardware, and supports D-STAR® cross mode operation*
- using fully embedded software written in pure C, running on a custom-tailored embedded real time operating system. This means no Linux, no bulky Windows software, no failing SD cards – but extreme durability, reliable operation and fast bootup.
- No desktop PC software or drivers to install
- Supports fast battery charging with USB charger detection
- 20mW UHF RF output, see the specifications
- Extreme fast bootup: under 5 seconds**** from powerup to connected to a server and ready to use
- Supports scheduling an automatic daily wakeup and powerdown
- Built-in Wi-Fi access point mode for quick and easy connecting to Wi-Fi networks
- Multiple Wi-Fi network support with automatic connect and reconnect
- Fully automatic over the air firmware upgrades for new features
- Bright multicolor LED with brightness control for easy real time state and battery LED for charge status monitoring
**** Depends on the speed of the Wi-Fi router, Wi-Fi network and internet connection conditions.
Very easy to use
- Built-in voice announcements
- BrandMeister Manager and Quick Call on the web interface for DMR TG/reflector linking/unlinking
- DMR SMS chat
- DMR ID database lookup
- Controllable with calls from your radio to preconfigured IDs/callsigns
- Built-in echo service for testing
Review videos
Frequently asked questions
If you travel around the world, where you can’t reach the repeater HG5RUC directly, you can still talk with your friends by using an openSPOT4 or openSPOT4 Pro and a DMR (or cross mode compatible) transceiver by connecting it to the same network and talkgroup which HG5RUC uses (TG216, BM). If you speak with your transceiver on the openSPOT4 or openSPOT4 Pro’s frequency, it will route your call to TG216, and HG5RUC will transmit your signals all around Budapest, so your friends will be able to hear and talk to you.
If you don’t have local repeater coverage, the openSPOT4 and openSPOT4 Pro can link you to supported digital networks all around the world. You can talk to people living on the other side of the world very easily.
If you have the openSPOT4 Pro, then you don’t even need a digital transceiver! You can use the free SharkRF Link app to talk.
The openSPOT4 and the openSPOT4 Pro were designed by hardware and embedded software professionals, who are also amateur radio enthusiasts. Its PCB, hardware components and case are very high quality, meet industrial standards and were chosen with practicality and durability in mind. We offer 2 year warranty*** with official support in email and on our community forums.
The openSPOT4 and the openSPOT4 Pro are not MMDVM® clones, they have nothing to do with MMDVM® or Pi-Star, and they are not a Raspberry Pi® wired with a bunch of PCBs in a case (or without a case…).
Using the devices are extremely easy. You can change every setting by opening the built-in web interface with a web browser. You can also use the Quick Setup feature to easily connect the openSPOT4 and the openSPOT4 Pro to a digital network like BrandMeister. Opening the web interface is rarely needed, as you can switch talkgroups, reflectors, and even pre-saved configuration profiles by using your transceiver.
Even the first time setup is very easy. If no Wi-Fi networks are configured, then the openSPOT4 and the openSPOT4 Pro appear as a Wi-Fi network access point on your phone/tablet/PC called “openSPOT4 AP”. Connect to this network, and a connection wizard helps you to connect the openSPOT4 and the openSPOT4 Pro to the available Wi-Fi networks.
*** The battery and the USB-C charger cable have only one year long warranty period (70% battery end of warranty capacity).
The web interface has light and dark themes
Most of the software components were redesigned to make the whole device extreme fast, future-proof, and use very little power. We’ve added new radio modes and network protocols since the openSPOT1. The web interface is redesigned and now use WebSockets technology which means extreme low latency and a whole lot of new realtime features.
If you have the openSPOT4 Pro, then you can use the app also as a transceiver to talk!
System Fusion® is a registered trademark of Yaesu Musen Co., Ltd.
NXDN® is a registered trademark of JVC Kenwood Corp. and Icom Inc.
APRS® is a registered trademark of Bob Bruninga, WB4APR
Raspberry Pi® is a registered trademark of Raspberry Pi Foundation
Arduino® is a registered trademark of Arduino AG
MMDVM® is a registered trademark of Shenzhen HKCNMA Co., Ltd.