We complained about how big the DJI Air Unit is, and they listened! The new Caddx Vista VTX is a much smaller Air Unit for the DJI Digital FPV system, making it easier to install, and compatible with even smaller drones.
Learn more about the DJI Digital FPV System here.
Where to Buy?
Update (2022): you won’t find the Caddx Vista in stock anymore, as DJI has license the product to Runcam for sale instead and it’s now renamed to Runcam Link, you can find the new product links here.
- Caddx: https://oscarliang.com/product-jhcp
- AliExpress: https://s.click.aliexpress.com/e/_DBoNHWN
- GetFPV: http://bit.ly/2QH4f53
Closer Look at the VISTA VTX
The VISTA VTX is a collaboration between Caddx and DJI, and fully compatible with DJI’s HD FPV System. It’s much smaller, lighter, and $30 cheaper, and yet the maximum power output matches the the full size Air Unit.
You can tell the new VISTA VTX is made for smaller FPV drones, the mounting holes are 20x20mm which means it can be installed directly in your FC stack. There are also 17x17mm mounting holes, so it’s might be compatible with whoops and toothpick class in the future when frames are designed for it.
To reduce weight, the VISTA uses only a single antenna, but claim to have maximum 4KM of range at 700mW, which is the same as the full size Air Unit. Not bad at all for smaller drones! However we expect the full size Air Unit to have more reliable signal for having an extra antenna, especially when dealing with interference in noisy environments.
Frequencies are exactly the same as the full size Air Unit, it still uses the same 8 channels (in FCC mode). It also supports the DJI remote for radio control if you don’t want additional radio receiver in your drone.
The Vista is almost the same as the full size air unit in many areas: runs the same firmware, identical image quality, supports focus mode, low latency/high quality modes, has built-in radio receiver…
However, one big improvement is the input voltage range. The Vista now supports up to 6S while the DJI Air Unit only supports up to 4S. When DJI was first developing the digital FPV system, nobody was running 6S back then, and it was too late for them to change the design when they release Air Unit. It’s great they fixed that in their latest product.
You have to solder your own wires to the Air Unit. The solder pads are pretty large for easy soldering.
It uses IPEX (U.FL) connectors for the antenna, and they provided a holder to secure the antenna connector.
- VISTA VTX 30.45 x 29 x 13mm (20x20mm + 25.5×25.5 mounting holes)
- Camera 27.4 x 21.1 x 20.1mm
- Antenna 80mm
- VISTA VTX 19g
- Camera 10g
- Antenna 3.5g
- Antenna Connector: U.FL
- 200mW, 500mW, 700mW selectable output power (the VISTA supports 1200mW hack too)
- Maximum Range: FCC 4Km, CE 0.7Km
- Takes 2S to 6S Input Voltage (7.4V – 26.4V)
- Operation frequency: 5.725-5.850GHz
- High quality mode 30-40ms
Low latency mode 21-28ms
- Compatible with DJI HD camera (from full size air unit)
Compatible with DJI HD goggles
- Interface: USB-C, IPEX, 3in1 Port
No SD Card Slot / 1080p Recording?!
One of the biggest downsides with the new VISTA air unit would be the lack of recording capability. It doesn’t have an SD card slot, and therefore you can’t record 1080p HD footage inside the air unit, you can only record footage in your DJI Goggles.
That means the best footage you could get with the VISTA is only 720p 60FPS or 120FPS?
Another concern with the lack of SD card slot is that you cannot change FCC/CE mode, which means if you are from Europe, your VISTA VTX will be locked to CE mode. With CE mode the max output power is limited to 25mW. In order to use 700mW you have to change it to FCC mode and so far with the full size Air Unit, it requires an SD card to do so. Not sure if there will be an work around for the VISTA, I hope so.
FCC Unlock & 1200mW Power Hack
How to Setup Caddx VISTA?
I have a full tutorial on how to connect and setup your Caddx VISTA.
OSD Disappear Fix
If Betaflight OSD stops working (no longer appear) in DJI Goggles, chances are the UART connection is no longer working on the Vista.
Voltage spikes can damage the diodes on the TX and RX connection on the Vista, especially if you are powering the Vista directly from 6S.
You can remove these diodes (RX and TX), and your OSD should work again, however if you have another voltage spikes, it’s going to kill more than just the diodes so make sure you understand the risk before doing so. That’s why we recommend powering the Vista with 9V BEC to lower the chance of damaging them.
Same thing if your SBUS doesn’t work anymore, just remove the diode on the SBUS output.
To remove the diodes, you can desolder them, or even easier, just a gentle push with a small screwdriver should be enough for a clean removal.