The Vodafone GigaCube 5G based on the Huawei 5G CPE Pro H112-370 is one of the more widely used 5G routers for fixed wireless access applications. In areas with good outdoor coverage, the router is capable of delivering strong LTE and 5G performance. However, indoor installation conditions can still affect real-world throughput, latency, and connection stability.
 
Walls, coated glass, nearby buildings, and RF interference may all reduce signal quality, even when the router shows relatively strong signal bars. For users experiencing inconsistent speeds or unstable performance, adding an external MIMO antenna is often one of the most effective ways to improve the overall connection.

 
Does the Huawei 5G CPE Pro H112-370 Support External Antennas?

Yes. The Huawei 5G CPE Pro H112-370 includes external antenna ports that allow compatible LTE/5G antennas to be connected directly to the router.
 
Like many modern cellular CPE devices, the router uses a MIMO antenna system to support higher throughput and better spectral efficiency. External directional antennas can help improve signal quality and maintain more stable MIMO performance, especially in challenging RF environments.
 
The H112-370 version includes TS9 antenna connectors, making it compatible with a wide range of external cellular antenna solutions. 

 
Why Use an External Antenna with the Vodafone GigaCube 5G?

One common misconception is that external antennas only improve signal strength. In reality, modern LTE and 5G performance depends much more on signal quality.
 
Metrics such as SINR and RSRQ often have a greater impact on throughput than signal bars alone. A router may show strong coverage while still delivering poor real-world performance if interference levels are high or if MIMO signal isolation is limited.
 
This becomes especially important for high-speed applications such as:
 
1. 4K video streaming
2. Remote office connectivity
3. Online gaming
4. Industrial networking
5. Rural fixed wireless deployments
 
In many cases, an outdoor directional MIMO antenna can help the router maintain cleaner signal conditions and more stable spatial streams, resulting in better throughput consistency and lower latency.
 
 
Recommended External Antennas for Huawei 5G CPE Pro H112-370
For the Vodafone GigaCube 5G and other routers, the best antenna depends on your signal, location, and whether you need a directional or omnidirectional model. Maswell offers both directional and omnidirectional MIMO antenna solutions for different installation requirements.
 
Directional 2x2 MIMO Antennas (You know your nearest tower location and direction)
 
1. AN_GSM_201_MIMO 5G

The Maswell AN_GSM_201_MIMO 5G is a directional panel antenna designed for fixed wireless LTE and 5G applications where stable signal quality and reliable outdoor performance are required. Its directional design is particularly useful when the serving cell is located farther away or when surrounding RF interference affects indoor router performance. It’s a great choice if you can point the antenna directly toward the cell tower.
 
2. AN_Master_001-2

he AN_Master_001-2 is a high-gain wideband 5G/4G/WiFi MIMO panel antenna designed for outdoor applications. With coverage from 600–8000 MHz, high gain, and a weather-resistant IP67 design, it is suitable for 5G CPEs, gateways, and other fixed wireless applications where stable outdoor performance is required. Its directional design works best when you can locate the cell tower and align the antenna accordingly.
 
Omnidirectional 2x2 MIMO Antennas (You don’t know your nearest tower location and direction and you just want it to be simple)
 
1. AN_GSM_202_MIMO

The AN_GSM_202_MIMO is a 2×2 MIMO high-gain cellular antenna covering 700–6000 MHz, with a peak gain of 4.5 dBi. It supports 5G, 4G LTE, 3G, and WiFi 6E frequency bands and uses a screw-based mounting method for a firm installation. It is suitable for applications including CPE equipment, wireless broadband, and home signal enhancement.
 
2. AN_Master_Cubic-2C-LP
The AN_Master_Cubic-2C-LP is a compact 2×2 MIMO antenna covering 600 MHz–8.0 GHz, with gain of up to 6.0 dBi. Its flexible mounting options, including screw mounting, 3M adhesive mounting, and an L-bracket, make it convenient for locations where installation space is limited. Its IP67 design also makes it suitable for outdoor applications.
 
When choosing between directional and omnidirectional antennas, consider the local signal environment and installation conditions. Choose a directional antenna if you can aim it at a specific tower; go with an omnidirectional one if you're unsure of the direction or need to pick up signals from various spots.
 

How to Connect the Antenna to the Router
The Huawei 5G CPE Pro H112-370 uses TS9 antenna connectors, so the external antenna system should be configured with compatible adapter cables when required.
 
A typical installation includes:
 
1. The external MIMO panel antenna mounted outdoors
2. Low-loss coaxial cables
3. TS9 adapter connections for the router
4. Directional alignment toward the serving cell
 
Proper cable selection is important because excessive cable loss can reduce the benefit of the external antenna system.
For extra help, check out Saverio Cirillo's video demos showing real-world 2x2 MIMO antenna installs. You can also find step-by-step guides on the Maswell website.
 
Watch how to install our 2x2 MIMO directional antennas (by Saverio Cirillo)
English: https://youtu.be/TYo_PAMsxc0
Italian: https://youtu.be/lZdf6zj-oD8?si=00ckgIqblO_YVszL
Germany：https://youtu.be/amdwJzcWNBE
French：https://youtu.be/aTs6kuGp3Mo
Spanish：https://youtu.be/a-UIbCXi_6k
Related Articles
How to Install a 2×2 MIMO Directional Antenna for Better 5G Performance?
https://www.maswelltech.com/index.php?m=content&c=index&a=show&catid=69&id=239

 
Installation Tips

A higher mounting position does not always guarantee the best performance. In some environments, placing the antenna slightly lower or using nearby structures to reduce interference may actually improve overall signal quality.
 
Before final installation, it is recommended to first identify a suitable installation location by checking the RSRP (Reference Signal Received Power) around your home.
 
Find the Best Antenna Location with RSRP
 
Use your smartphone to measure RSRP at different locations around your home. On Android, install LTE Discovery and check the RSRP value in the Discover tab. On iPhone, dial *3001#12345#* to enter Field Test Mode and check the available cellular signal information.

 
RSRP is shown as a negative dBm value, and a value closer to zero generally indicates a stronger signal. For example, -76 dBm indicates a stronger signal than -115 dBm. Walk through your home and check different potential installation points, such as windows, balconies, rooms, or outdoor locations. Compare the RSRP values and identify the locations with the strongest signal.

 
Use the RSRP results as a reference when choosing where to install the external antenna. However, the location with the strongest RSRP does not always guarantee the best overall performance. A higher mounting position may not always be better, and in some environments, placing the antenna slightly lower or using nearby structures to reduce interference may improve overall signal quality.
 
After selecting a suitable location, fine-tune the antenna direction and compare actual throughput performance rather than relying on signal strength alone. Minimize unnecessary cable length, avoid placing the antenna near large reflective metal surfaces, and check SINR and RSRQ values if available in the router interface.
 
Real-world RF environments can vary significantly depending on terrain, nearby buildings, interference, and network congestion, so practical testing remains important.

 
Final Thoughts

 
The Vodafone GigaCube 5G and Huawei 5G CPE Pro H112-370 can get much better real-world performance when paired with a properly installed external MIMO antenna system.
 
For those using these in weak-signal or interference-heavy environments, choosing the right external antenna can help improve signal quality, stabilize MIMO performance, and achieve more reliable LTE/5G connectivity. Depending on the installation environment and coverage conditions, users can choose between directional and omnidirectional MIMO antennas to find the right balance between signal performance and installation flexibility.
 
Proper installation is equally important. Using RSRP to find the best spot for the antenna, adjusting the antenna direction when required, and checking actual throughput, SINR, and RSRQ can help users achieve the best possible performance from their external antenna system.