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Hello everyone, I am Mirko, and today we see this 5.8Ghz video transmitter for miniquad FPV
This is the AKK FX3-Ultimate, if you want to buy it find the link in description.
Inside the package there is the VTX, an MMCX - SMA pigtail and the instruction manual.
Let's see now the technical specifications of this AKK
40 channels available, however channels E4, E7 and E8 are not selectable
We can choose between the A, B, E, Fatshark and Raceband bands.
The power is adjustable and we can choose between 25, 200, 400 and 600mW
We also have the PIT Mode which allows us to change the band and frequency
temporarily reducing the power to 0.01mW.
So we set the VTX without disturbing those who are flying near us.
All VTX settings can be changed via SmartAudio or with the VTX button
The weight is 5.6 grams
The dimensions of the VTX are very small and we can mount it on a 20x20mm stack.
Alternatively, we use a heat-shrink to secure it to the frame with a zip tie.
As we notice, there is no connector.
The wires are soldered directly into the VTX. The cables are made of good quality silicone.
I've seen this choice before in other VTX AKKs.
I like this solution very much because it eliminates the encumbrance of the connector,
making VTX AKK ideal for more compact builds.
Input voltage can be between 7 and 24V
so we can connect it directly to the battery.
In this case, do not use batteries with more than 5 cells.
We have a 300mA 5V output to power the FPV camera.
The green cable is for smartAudio, thanks to which we can change all the settings of the VTX
via the betaflight OSD or the Taranis Lua script.
The SmatAudio must be connected to the TX of a free UART.
By free UART I mean a port that has not used either the TX or the RX.
In fact, I remind you that in the UART ports we can only connect one peripheral at a time.
If you have the RX assigned, for example, to the receiver,
you cannot use the TX of the same port to connect the Smartaudio.
Alternatively we can use this key and the LEDs to do all the configurations manually.
To change channels, we quickly press the button,
to change the band, we hold it down for two seconds,
To change the power, we hold it down for 4 seconds.
In this side we notice the microphone thanks to which we can hear the motors audio
directly in headphones or DVR movies.
This helps to increase the immersion during the flight and makes our DVR movies more beautiful.
As we notice, this VTX has a double connector for the antenna.
We can use an antenna with UFL or MMCX connector,
anyway, we always use one antenna at a time.
Thanks to the double connector this VTX is quite versatile.
We choose an antenna with UFL connector if we use this VTX for a micro quad
or if we want to use VTX in a larger buil we use the MMCX connector
The absence of connectors, microphone, smartaudio and double connector for antennas,
make this FX3-Ultimate a good product if you are assembling a compact mini quad
based on 20x20mm boards.
The size and light weight are a good feature even for a racing drone.
In fact, the 600mW maximum power is more than enough in the race environment.
In conclusion we can say that this AKK is a great choice for quads with 20x20 cards or racing.
This was my review of the AKK FX3-Ultimate
Thanks for watching the video do not forget to like and subscribe
If you want you can also support me on Patreon by clicking the link at the end of the video.
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