DYS Mi200 5.8Ghz 40CH 25 to 200mW FPV VTX with SMA Pigtail
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The DYS Mi200 is a compact 5.8Ghz FPV video transmitter with a variable power output; selectable at either 25mw or 200mW. It has 40 channels including RaceBand frequencies so it is compatible with most 5.8Ghz FPV products. The power output and channel frequencies are easily set via a push button and LED display. They can also be set remotely by connecting the VTX to your radio receiver. The transmitter requires a 5 volt power input and it's plug and play compatible with lots of 5v FPV cameras, including the RunCam swift and Eagle. Finally, the VTX also features an onboard microphone for live audio transmission. This might sound like a pointless feature to many, but there are benefits to be had from being able to hear what the motors are doing (check out this blog post).
Antenna not included, we recommend: Skyzone 5.8Ghz 4-Leaf Circular Polarised FPV Antenna (RHCP)
NEW: We now sell a pigtail version of the Mi200. The pigtail gives you more flexibility when mounting your VTX and it also makes your VTX more crash resistant; shock is dissipated through the extension cable rather than through the VTX.
IMPORTANT: Do not turn the transmitter on before attaching the antenna, doing so will permanently damage the board!
Note: Please check with your local authorities regarding the operation of this equipment before you purchase. Regulations on power output, usable frequencies and licenses’ to operate vary from region to region.
FPV equipment and advice: If you like multicopters, you are more than likely going to like FPV flying. Most people dream of piloting an aircraft for real, well with an FPV setup you can actually place yourself in the cockpit (well sort off)! FPV stands for First Person View – it’s achieved by mounting a camera on your multirotor and broadcasting a live video feed so that the pilot on the ground sees the flight from the aircraft’s view.
When it comes to selecting FPV TX / RX equipment you will soon discover that there is a huge selection to choose from. However, a word of warning; not all of it will be legal to operate in the UK. Only certain frequencies are freely available to use and furthermore there are constraints on transmission power levels. 2.4Ghz video equipment is legal, however most radio control equipment utilizes the 2.4Ghz spectrum and consequently when used together there will be interference. This leaves only one credible option, the 5.8Ghz band, which incidentally is a very clean band due to the low amount of other users. The drawback is its poor penetrative ability; buildings and even trees can have an adverse effect on the signal strength. This means it’s advisable to use it for line of sight (LOS) flying only.
This brings us onto power constraints. In the UK, you are limited 10mw of transmission power on 2.4Ghz and 25mw on 5.8Ghz. Contrary to popular belief, an amateur radio license (HAM) does not exempt you from the power restrictions for airborne use. While you may have seen transmitters with higher power ratings - 200mw is popular, these are not legal to operate in the UK for FPV. You might be wondering why the power level matters anyway? Well, more power gives greater range. However, it’s not that simple; to double the range you have to quadruple the power! Therefore simply buying a very powerful TX to achieve great range is not an especially effective or legal solution.
The best way to achieve greater range is by selecting appropriate antennas. There are a variety of different types; each designed to work slightly differently, for different purposes. Therefore, in order to make the best selection you need to understand how they work.
Most transmitters / receivers come with an omnidirectional, 2.14dbi gain “Rubber Duck” antenna as standard. The key terms to understand here are omnidirectional and gain. Omnidirectional refers to the radiation (or received) pattern of the antenna. Gain on the other hand refers to the antenna’s directivity. To better understand, you can make an analogy with different light sources. If you have a light bulb out in the open, the light will go in every direction, but it will not go very far (this is your omnidirectional low gain antenna). If you take that light bulb and put a reflector behind it, the light will be directed more brightly and much further but in a narrower beam (this like a directional high gain antenna). Radio power works in the same way, you will never get "extra" power from an antenna, but you can direct the radio power where you need it, and it will be many times stronger.
The best thing about increasing the gain of your receiver antenna is the effect it has on your range. For example, if you were to replace your standard 2.14dbi omni antenna with a 17dbi helical antenna you increased your receiver dbi by ~15dbi. 15dbi divided by 3 gives us 5 times the range you think. Well no, 3dbi gain doubles your distance; another 3dbi on top doubles your new distance. So by increasing the gain from 2dbi to 17dbi actually increases the range by 32x its original distance! All this without increasing the TX power at all!
Because high gain directional antennas work by taking power away from some areas, and focusing it in other directions, they need to be aimed, otherwise your multirotor will fly into weak spots and your video link will be lost. Remember that the higher the gain, the narrower the beam of radiation and hence the greater need for precise aiming.
If the multirotor is far away from you, aiming will be easy, as its position in the sky will change slowly. If it’s close, it is much harder to keep the antenna aimed. The solution is a diversity system. A diversity receiver has multiple video antennas and automatically chooses which antenna is receiving the best signal at any moment. This allows you to have the best of both worlds; you can have a long range directional antenna that you aim when your multirotor is far away (for example a high gain helical antenna), and also a omnidirectional antenna that only works close, but does not need to be aimed for instance a low gain skew planar wheel antenna).
If it are still stuck, then watch this video - it's an excellent layperson's guide to understanding the relationship between range and gain.
If you want a more in detailed explanation watch this video - it will help you understand polarization and also select an appropriate antenna.
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UK Postage: Low value, small packages are sent using Royal Mail First Class. Larger and higher value orders are sent with Royal Mail First Class Recorded delivery. Consignments exceeding 2kg will be shipped using DHL or by a courier of our discretion. All high value orders are fully insured and will likely require a signature on delivery. Shipping cost are calculated once items have been been placed in your basket. We process orders Monday to Friday. Here at Flying Tech we pride ourselves on our quick turnaround of orders. If stocks levels allow, we aim to dispatch orders placed before 4pm the same day - please note that the DHL cut off for same day collection, next day delivery is 11AM. Otherwise orders will be dispatched within 48 hours of receipt of payment. A confirmation email will be sent when your items have been dispatched. If you wish to change your order, please contact us promptly, as we won't be able to make amendments once the order has been shipped.
FREE shipping in the UK on orders over £99 (this is a signed for service and insured to a maximum of £40). Please note that the offer only applies to orders with a total weight under 1Kg and that a few products are exempt from the offer.
International Postage: We are based in the UK, but ship to most worldwide destinations. Postage rates are calculated by the weight and shipment location, the price is quoted during the checkout. Low value order can be sent by Air Mail, but are not insured. Higher value, heavy goods will be sent with DHL or an alternative courier. Orders shipped outside the EU may be subject to customs charges. These charges are additional to any delivery costs and will need to be paid by the recipient.
For our international customers who require a rapid delivery we off a DHL Express service. DHL Express offers NEXT DAY delivery to most European destinations and a very fast delivery for countries further afield, generally 2-3 days. For country specific estimated transit times, please refer to the table below.
Transmit times based on deliveries to main cities
We reserve the right to modify, remove or add to any of these services at any time. We endeavour to ship all items as fast as possible. If you would like an alternative shipping arrangement to be made please contact us.