Review: AKK Infinite DVR VTX FPV transmitter

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In this review we are looking a the brand new Infinite DVR VTX video transmitter for FPV use. This new product comes in stackable 30.5 mm whole distance format and is equipped with an integrated DVR for video recording.

Overview

AKK* is moving on in big steps with regards to their FPV VTX product portfolio. Coming from rather simple VTX products, the latest additions feature a lot of handy options that make the average drone pilot’s life a lot easier. We are talking about things like smart audio setup via OSD (see our AKK FX2 Ultimate review) or clever one button setup sequences here. The newest addition is the exciting AKK Infinite DVR VTX, which includes a full digital video recorder solution to record the video feed of your FPV cam directly on board your racing quad. This is usually beneficial to analog video quality as the weakest member of the transmission sequence (namely the radio link) is cut out of the equation, when compared to a DVR solutions integrated in your FPV goggles*. Of course, this ground station recording still gives some additional value in situations of a crash and to help locating and recovering the aircraft.

AKK Infinite DVR VTX FPV Transmitter - Top View

What’s in the box?

The new AKK* Infinite DVR VTX comes in a very durable cardboard box, which made it in very good shape to our test bench in Germany. Inside the box you will find the Infinity DVR VTX sitting in some soft foam, waiting to be put to good use. Furthermore, you are supply with a antenna pigtail adapter* that converts the MMCX connector on the VTX to the standard SMA connector we use for our antenna connections in FPV flight. On top there is a small paper manaual included, which briefly guides through the one button setup features. You should put this in your flight pack right away, if you are not planning to use the smart audio setup feature. It will come in handy for sure, when you have to switch channels, bands or even transmitting power out on the filed.  That’s all you get. Meaning you have to obtain a decent FPV antenna* by yourself, leaving you with a vast choice of products (but that’s something for another day).

Technical Specs

The following tables summarises the key technical details of the new AKK Infinite DVR VTX.

NameAKK Infinite DVR VTX
Voltage Input7 - 26 V
Supported Video StandardsPAL /NTSC
ConnectorMMCX (RP-SMA adapter included)
Channels37 channel***
Frequency5.8 GHz
Setup1 Button Setup, OSD setup via FC using Smart Audio
Weight8.8 g
Output Power0.01 mW / 25 mW / 200 mW** / 600 mW** / 1.000 mW**
Misc.LED array for channel, band and output power selection,
OSD setup via FC using Smart Audio,
Integrated microphone,
5V voltage supply for camera, integrated microSD card slot for DVR functionality
Price25.04 €*

***NOT all channels are legal to use within Germany!
** NOT LEGAL TO USE IN GERMANY! CAUTION WHEN SETTING UP!

Using the AKK Infinite DVR

Mounting the new AKK Infinite DVR VTX is pretty easy due to the standard 36 x 36 mm form factor. The mounting holes also are spaced with standard 30.5 mm, making the AKK Infinite DVR VTX* an easy add-on to existing FC / ESC stacks. The pigtail adapter* gives you good flexibility in terms of antenna placement. You will need another mounting point for your antenna though, as the provided pigtail cables is rather flexible and will not stay in a certain position on its own. The MMCX connector saves some spaces and seems to make a reliable connections, just make sure to not load the pigtail with any pulling forces.

AKK Infinite DVR VTX FPV Transmitter - Connected Pigtail Cable

Camera, voltage input and smart audio are connected via blank wires, which also could be easily desoldered and replaced, if needed. That’s something we have missed on so many other VTXs in the past, which utilised proprietary connectors that made them hard to fix.

The setup via one button setup is easy as well. The AKK Infinite DVR has two separate LED arrays. Two red, and five blue LEDs (plus another singled red LED for the DVR function, but let’s ignore this one for the moment). You also find to push buttons, again on for setup the other one for recording. Pushing the setup button once will chance through the channels. The first red LED will constantly light on channel 1 only, the second LED will show you that you have switched to the next transmission channel. Holding down the button for 2 seconds enters the band configuration. Now the five blue LEDs will represent the different bands (A, B, E, F and Race band). To change the transmission power you repeat this procedure, but holding down the button 4 seconds, before using it to switch through the five power modes. Make sure to always obey the law regarding maximum radio power and frequency at your location!

AKK Infinite DVR VTX FPV Transmitter - microSD Slot

The recording feature is easiest to use of all. Plugin a clean formatted microSD card (max 32 GB capacity) and turn on the Infinite DVR VTX. The card will be initially prepared and can be used for onboard video recording afterwards. To start / pause the recording just press the second button on the side of the transmitter. The dedicated third red LED will light up to signal recording in progress. The DVR works in rolling recording mode. This means that after a maximum of 5 minutes the recording is saved as an individual file and the recording continues in a new file. We could not find out how the DVR* acts, if the card is full, yet. (Especially if it will start overwriting the oldest file or just stop recording). Recording are created at 640×480 resolution with 30 frames per second, by the way.

AKK Infinite DVR VTX FPV Transmitter - In Test Operation

In-flight the VTX presented a decent range using the legal radio settings for Germany. You can expect typical distances of clear pictures up to 500 m on 25 mW output power with a directional antenna* on the receiver end. For freestyle and park flying this is decent. Of course, the VTX has a lot more range potential when operating at 1000 mW, which could not be tested due to legal limitations.

Conclusion

The new Infinite DVR transmitter form AKK* is a nice addition to the already sophisticated product lineup of FPV VTXs. The stackable format makes it really easy to mount the new DVR VTX on your racing quad. The included pigtail adapter* gives you freedom of antenna placement. The over all quality of the product can be described as very good. The setup process via one button sequence is easy, as the included LEDs provide good feedback on what has happened. Pilots tired of pushing buttons on the VTX can go ahead and use the integrated smart audio feature, which provides VTX telemetry data directly to your flight controller*, including OSD* setup. The integrated DVR recording feature is awesome! Quality of the videos is good and the recorder is really easy to use out on the field. For a current price of around 25 € the AKK Infinite DVR VTX* definitely is worth a closer look, if you are in the game for a new FPV transmitter!

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Nils Waldmann

Nils Waldmann

...studierter Wirtschaftsingenieur und Wirtschaftsinformatiker, leidenschaftlicher Modellbauer, Hobby-Fotograf, Akku-Liebhaber und freier Redakteur bei dem Computer-Onlinemagazin Allround-PC.com.

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