What is the difference between 2.4G and 5.8G?

A waveband is. However, wireless knowledge is transmitted between devices. These bands are radio waves that transfer the data, and that they are often either 2.4 Gc or 5.8 GHz. The 5.8G distinction between 2.4 and 5.8GHz bands is that they vary (coverage) and, therefore, the information measure (speed) they provide. For instance, the 2.4GHz band offers coverage at an extended range; however, it transmits data at slower speeds. Instead, the 5.8GHz band provides less coverage however sends data at quicker speeds.

  • 2.4GHz- PROs and CONs


– Coverage: 2.4GHz offers coverage at a longer range. It covers a larger area and provides a more extended range.

– Interference: 2.4GHz is more convenient if you have many walls or other objects where you need coverage. The waves used by this frequency are better suited for longer ranges and transmission through obstacles. 

– Cost: 2.4GHz access points are cheaper than the ones supporting 5GHz.


– Speed: 2.4GHz transmits data at slower speeds, with lower data rates.

– Congestion: Users can experience higher congestion, as many devices use the 2.4GHz band. This will cause discontinued connections and slower speeds. 

– Overcrowding: 11 free radio air and channels available in the 2.4GHz band, depending on the country’s standards, less than the 23 available in 5GHz.


  • 5.8 GHz - PROs and CONs

– Speed: 5.8GHz band sends data at faster speeds, with a higher data rate.

– Less congestion: 5.8GHz frequency experiences fewer interferences from other devices because fewer devices use 5.8GHz frequency.

– Less overcrowding: 5.8 GHz has more free radio air and channels, i.e., 23 working channels vs. 11 in the 2.4GHz band, depending on the country’s standards.


– Coverage: 5.8GHz provides a smaller coverage area.

– Interference: 5.8GHz band’s shorter waves make it less capable of going through walls and solid objects. This happens because, at higher frequencies, waves attenuate stronger. Hence, the signal is easily affected by multiple obstacles.

– Cost: the cost of access points supporting 5.8GHz is higher. This is because 5.8GHz is newer in the market.

According to the above theory, the propagation distance of 2.4G is much longer than 5.8G. However, in the real environment, due to the same frequency interference in the 2.4G frequency band, especially at long distances, the lower bandwidth causes the distance to be greatly reduced. The actual use environment of 5.8G is relatively clean, with fewer interference sources, and its bandwidth is wider, and the data transfer rate is high. Compared with 2.4G, 5.8G has obvious advantages. Therefore, if the transmission power is the same in the current environment, the transmission distance of 5.8G is longer than 2.4G. And because of the higher rate of 5.8G, the real-time image transmission is also clearer than 2.4G.

What is the expected control range after I install the ALIENTECH antenna?

ALIENTECH DUO II, PRO 2.4G, PRO 5.8G are all antennas with power amplifiers, and their output power is 4W (or 36dBm). DJI’s original power data is 16-23dBm. According to the calculation for each increase of 6dBm, it is theoretically increased by 4 times. However, considering the gap between the actual environment and the theory, we believe that at least a 1-2 times increase in distance can be obtained. But this must also depend on the actual signal environment. In other words, it will be closer to the theoretical value in the lower interference environment, and vice versa.

Here are some of our flight test videos

How should I choose the ALIENTECH antenna as my drone?

It would help if you determined which signal mode you belong to. You can also obtain relevant information from your Drone supplier. After you understand the signal model in your area, you can select antenna products according to the following list.

Brand Drone Model FCC Mode CE Mode
DJI Spark
DJI Mavic mini
DJI Mavic mini 2
DJI Mavic air 
DJI Mavic air 2
DJI air 2s
DJI Mavic pro - -
DJI Mavic Pro Platinum - -
DJI Mavic 2
DJI Mavic 2 pro
DJI Mavic 2 zoom
DJI Mavic 2 Enterprise
DJI Phantom 3 advanced - -
DJI Phantom 3 pro - -
DJI Phantom 4 advanced - -
DJI Phantom 4 pro
DJI Phantom 4 Pro v2.0
DJI Phantom 4 RTK
DJI inspire 1 - -
DJI inspire 1 pro - -
DJI inspire 2
DJI inspire 2 pro
DJI Matrice 100
DJI Matrice 200
DJI Matrice 210
DJI Matrice 300 RTK
DJI Matrice 600 -
DJI Matrice 600 PRO
DJI DJI Smart controller
DJI Cendence 
Parrot Parrot Anafi
Autel Autel EVO  - -
Autel Autel EVO II - -
Autel Autel EVO II PRO V1 - -
Autel Autel EVO II PRO V2
Autel Autel Smart controller V1 - -
Autel Autel Smart controller V2

■  Recommended application: In FCC mode, the signal strength of 2.4G and 5.8G is above 20dB.
○  Not recommended but applicable: Since the signal strength of 5.8G in CE mode is low (only 14dB), the distance of the 5.8G frequency band is not as good as the 2.4G frequency band.
-   unavailable.

⚫ Known FCC regions: the United States, Colombia, the United States, China SRRC, South Korea, Hong Kong, Taiwan;
⚫ Known CE regions: EU countries, Commonwealth countries (such as Canada, Australia, Ireland, South Africa, India, etc.), Singapore, Indonesia, Japan (5.8G is not available).
⚫Countries with unknown signal mode: Please follow the CE zone.

Could you provide modification services for the remote control?

If you are in China, we can provide you with a paid modification service of the remote control.
Due to the relatively long shipping cycle overseas, expensive freight, and many uncertain factors. We are currently unable to provide modification services outside of China. But we sell modified remotes. This will be more economical and safer.

Do I have to purchase accessories or kits when I buy an antenna?

If you only buy an antenna for one of the controllers of the drone, then you don't need to buy accessories or kits separately. As long as you choose the correct drone or controller model, our products will include a complete retrofit kit. It will also include the necessary tools for modification. 

However, if you need to retrofit more than one remote control, you need to purchase the feeder or retrofit kit built into the remote control separately. The specific number will depend on the number of your modified remote control.

Note: What will place the accessories and kits usually used for modification in the product's outer packaging.

I don’t understand electrical appliances, can I modify the controller myself?

Yes, almost all of our customers are people who have no experience in modification. Basically, the modification can be completed under our video guidance.

What tools do I need to use when refitting?
We have included the necessary tools for modification in the product packaging. They are some commonly used tools, such as Phillips screwdriver, hex key, tweezers, etc.

Do I need to use a soldering iron when modifying the controller?
No, you don't need to use a soldering iron.

Precautions are required when refitting the controller.
Avoid damaging any cables or electrical components. Especially the signal cable, it is a coaxial cable. Its appearance is the shielding layer of the signal. Once damaged, the signal will leak out, resulting in signal attenuation.

Learn More

Why can't my drone fly more than 100 meters after the remote control is modified?

This is usually an error in the remote control during the modification process. It is recommended that you check the interface between the antenna and the remote control, and the internally modified coaxial cable.

1. The interface of the antenna is QMA. When you plug the antenna into the remote control, you will hear or feel a "click".  This means that the QMA is in place; otherwise, What will block the signal because the QMA does not snap into place.

2. You need to turn on the remote control again and check whether the internal coaxial cable is squeezed or broken? Due to the working principle of the coaxial cable, after it is squeezed or broken, it will cause signal leakage. In severe cases, What will block the signal?

3. You need to turn on the power of the antenna during use.

4. Select the correct frequency band in the HD setting item in the flight APP. When using the PRO series antenna, please pay special attention; you must lock the "custom" and set the same frequency as the antenna.

Learn More

Why can't my drone still fly more than 1000 meters after the controller was modified?

After modifying the remote control and adding an ALIENTECH antenna, your drone can fly more than 100 meters but cannot fly more than 1,000 meters. This requires attention to the following reasons:
1. Please go to the HD setting page of the APP and select the signal frequency band that matches the antenna. For example: if you buy a PRO 2.4G antenna, you need to set the frequency band to Custom-->2.4G and manually select the channel with low interference.
2. Please go to the HD setting page of the APP; please set the image transmission quality to the lowest, for example: normal, 720P, smooth.
3. Please go to the HD setting page of the APP. If there is a bandwidth option, please set the bandwidth to 10M.
4. You need to pay attention to no obstacles between the antenna and the Drone. The farther the drone flies, the smaller the angle between it and you and the horizon. Trees, buildings, mountains, and people in front of you may obscure the signal. The radio signal is a kind of wave. Although it has the ability to diffract, the intensity of the diffracted wave will be severely attenuated. Sometimes, you need to increase your standing position or fly the drone higher to get a longer flight distance.

Learn More

How long time can the power of the antenna be used?

The PRO series and DUO II battery is 2600 mAh and can stand by for more than 24 hours when fully charged, and can be more than 300 minutes in actual use. 

If the battery of the antenna is dead, can I still control the drone?

At a long distance, you will lose control of the drone and lose real-time image transmission. But it does not affect the automatic return of drones. It would be best if you waited for the drone to automatically return to your vicinity (50-100 meters area), and you will regain control.

To avoid the above-mentioned dangerous situation, we have made a low battery warning in power management. Once the power is lower than 25%, the antenna will emit a "di...di" alarm sound. If you hear the alarm sound, you can control the drone to complete the last flight and return home safely.

How can I get the best distance in using the ALIENTECH antenna.

Please set the HD page in the APP correctly before taking off.

  • Select the frequency correctly. For example, you use a 2.4G antenna, select the 2.4G frequency band, and fix it. If you choose the 5.8G frequency band or dual frequency, this will cause the 2.4G antenna to fail to enhance the signal but will cause the signal attenuation and reduce the control distance.
  • Set the real-time image transmission to the lowest (if there is this option). For example, common, standard, process, 720P, 360P, etc.). When the flying distance is getting farther and farther, the higher the quality of the image transmission will lead to the collapse of the transmission rate of the channel. This interrupts the signal connection.
  • Choose the channel with the lowest interference—the lower the channel curve or column, the fewer interference sources around. The low interference channel helps to improve the signal transmission distance and reception effect.

Note: If you want to get a longer distance, avoid using automatic and choose the manual mode.

Please visually check whether the object you need to photograph is visible or directly viewed? Please choose a field with a wide field of vision to take off, and ensure that no obstacles block the signal in the direction of flight. As the drone flies farther and farther, the angle between it and you and the horizon will become smaller and smaller. For example: when the drone's flying distance exceeds 5Km, the included angle is only 3°. This will cause short buildings or trees in front of you to block the signal. After the signal is blocked, there will be severe attenuation.

Ordering and delivery

How do I place an order?

Just go to www.alienth.cn (hint: you’re already here) and click on a product you like and add to the cart. Then just follow the easy checkout process and soon you’ll own some badass toys!


Can I place an order without creating an account?

Yes. You can place an order as a guest with no obligation to create an account. We do recommend that you create an account, however, if you’d like to check your order history and have your shopping basket items and payment details saved for next time. It’s quick and easy to create an account. Just visit https://alienth.cn/

Where is my order confirmation?

This is automatically sent to your email address when you place an order. If you haven’t received your order confirmation within 24 hours, please get in touch at support@alienth.cn just in case there’s a problem with your order. Please check your mailbox’s spam or junk folder before contacting in case the order confirmation has been diverted there.

Why has my order been canceled?

We typically only cancel orders if there’s a problem with stock, or if you’ve asked us to cancel. Please accept our apologies if your order is canceled because of a problem at our end. We’ll always offer an alternative product and process your refund in full, as quickly as possible.

How do I cancel my order?

There is only a short amount of time between when you place your order and when we start processing it. If you contact us straight away after ordering, via support@alienth.cn, we may be able to cancel your order before it’s processed. If not, we’ll despatch your order and then you can return it to us if you wish upon receiving it.

Can I alter my order?

Sadly, we’re unable to modify your order once we’ve started processing it. If you need to order a greater quantity or an additional product, please place a new order online.

When will my order arrive?

All packages will be shipped out from Shenzhen China and transfer by Hong Kong.

When we receive your order, we will ship the goods within 2-3 business days. And inform you of the tracking number of the package by email.

Standard Shipping: The package will be shipped using the Universal Postal System and is expected to be delivered within 15-25 days.

Express Shipping: For most of Europe, North America, Australia, and Asia, we will ship packages using DHL/UPS. It is expected to arrive within 5-7 days.

For regions such as South America, the Middle East, and Russia, we will use E.M.S. to deliver parcels. And the average delivery time is 2-4 weeks.

Learn More

What countries do you ship to?

We ship to most regions worldwide. Please check this detailed breakdown (shipping-policy)before ordering to make sure we can deliver to your geographical location.

How much is shipping?

Shipping costs depend on the item you’ve ordered and the country where it’s being delivered. Please refer to this delivery cost table(shipping-policy)to check the postage fees for different destination countries. Or, after you add the goods to the shopping cart and before payment, the system will automatically calculate the shipping cost for you.

Can I track my order?

Yes. We’ll provide updates at every stage of your order, from the moment you place it, to despatch and delivery. In your delivery confirmation emails, you’ll receive a tracking reference which you can use to check the progress of your order online.

Order Tracking




How do customs and duties work?

Customs duty is a tax that is determined by the customs authority of your country based on product type, known as commodity, value, weight, and dimensions. Customs duty is established by your customs authority. The carrier may also charge handling fees for processing your parcel through customs. Sorry, we have no control over this and it's your responsibility to pay for any fees. We suggest you find out what fees are applicable in your country BEFORE you order. 

Why would customs delay the delivery of my package?

Customs may inspect your package due to a product name, description, commodity type, and/or value.

Do I will pay VAT?

Yes, the products you buy are all duty-free on this website, which means that when the goods enter the EU or other countries, they may be subject to local customs duties.


The United States,Canada,HongKong,    



Andorra          Austria           Belgium         Bulgaria

Denmark        Estonia          Finland          France

Gibraltar         Greenland     Hungary        Iceland

Ireland            Latvia Luxembourg Malta

Monaco          Norway          Poland           Portugal

Réunion        Slovakia         Sweden         Switzerland

United Kingdom      

Why is my tracking number not updated?

If you choose the shipping method is Stand shipping. We will choose the most suitable international postal logistics method to send the parcels. Usually need to wait until the postal package enters the destination country before updating again. You can contact the local post office and inquire about the specific situation of the parcel.

If you choose DHL. On certain holidays or some specific times (for example Christmas, before Black Friday, during the epidemic), due to the limitation of the shipping capacity of the DHL account, the parcel will be waiting at the airport for the scheduling of the warehouse, which may cause the arrival of the goods Delay. Therefore, the tracking number will not be updated during arranging.

If the tracking has not been updated, it might mean the package hasn’t yet been picked up.

  • Orders are generally processed and shipped within 48 hours.
  • Our daily pickups are generally towards the end of the day.
  • Tracking information will be updated once the packages have been scanned into the system at the carrier’s distribution center.
  • There is step-by-step tracking for DHL packages, but the DHL site does not always update immediately.
  • It may take up to 48 hours for tracking to display on the carrier’s site. There may be several days when it appears your package is not moving to its destination. This occurs when your package is on a long-haul truck or on a train. The tracking of your package is only updated when it reaches the next distribution center. It can take several days for a truck or train to arrive at its destination.
  • If the tracking has updated and suddenly stopped, it might be caused by a delay (weather, traffic, etc.) and should resume within a day or so.
  • If you cannot track your package within a few days after you have received the shipping confirmation, please contact us by emailing support@alienth.cn

If the tracking has updated and suddenly stopped but does not continue updating within a day or two, it can mean:

  • The package is stuck and requires further assistance (incorrect/ missing address).
  • The package is damaged or lost.

This requires your patience.


What payment methods do you accept?

We accept the following credit cards: MasterCard, Visa, American Express and Discover. We only take payment once your order has been shipped. We also accept payment by PayPal or Amazon Pay. If you decide to use either of these two methods, you’ll be taken to either the PayPal or Amazon Pay website, where you’ll be prompted to log in and process your payment. You’ll then be directed back to our merchant website once your transaction is complete.

We also support bank wire transfers. Please send us the bank wire transfer voucher via email (support@alienth.cn) after completing the payment. We will ship your goods after receiving your remittance.

Where is my refund?

We aim to process refunds within three days of an item being returned to us. Please note, however, that your bank may take several days to process the payment back into your account. With that said, please allow up to ten working days after posting the item back to us before getting in touch about your refund. We’ll contact you by email to let you know when your refund has been processed.


Can I return or exchange an item?

You can definitely return the goods to us within 7 days after receiving the goods, provided that the goods are undamaged, unused and contained in the original packaging, with all labels and tags attached. Unfortunately, we do not provide exchange services.

How do I return an item?

Please contact our customer service team via support@alienth.cn. Providing the return is within the 14-day cancellation period and meets our return criteria, we will issue you with a return note by email. You need to print this off and attach it to the packaging of the product when returning it to us. You will need to arrange and pay for suitable packaging when returning an item.

Special reminder: Please read the return policy carefully before returning. Otherwise, What may incur additional costs, and items may even be lost.



What do I do if I lose my return note?

We send return notes by email, so if you can locate the email we sent you, simply print off a new one. If you can’t find this email, please get in touch and ask for it to be resent to you.

My order has arrived but it’s not as I expected. What can I do?

In the rare event that your order arrives damaged or faulty, please take photos of the product in question and email our customer service team via support@alienth.cn with the details. We’ll respond within 48 hours. If you just don’t like the product for any reason, we’ll gladly accept it back as a return, providing it’s in “as new” condition, in its original packaging with all labels attached.

How long does it take to return an item?

This depends on the carrier or shipping method that you choose when returning your item. Once we receive your return, we’ll notify you by email. We aim to process refunds within three days after receiving the item into our warehouse, but it can take several days for your bank or credit card provider to process the refund into your account, or onto your card.