---
product_id: 256250489
title: "AKK FX3-ultimate 5.8GHz 25/200/400/600mW Switchable Mini VTX, OSD Configuring via Betaflight, Supports Pit Mode, MMCX+UFL Connector, Smart Audio Compatibility"
brand: "akk"
price: "A$55"
currency: AUD
in_stock: true
reviews_count: 5
category: "Akk"
url: https://www.desertcart.com.au/products/256250489-akk-fx3-ultimate-5-8ghz-25-200-400-600mw-switchable
store_origin: AU
region: Australia
---

# 7-24V wide input range 600mW max power output OSD config via Smart Audio AKK FX3-ultimate 5.8GHz 25/200/400/600mW Switchable Mini VTX, OSD Configuring via Betaflight, Supports Pit Mode, MMCX+UFL Connector, Smart Audio Compatibility

**Brand:** akk
**Price:** A$55
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your FPV game with crystal-clear, customizable video transmission!

## Quick Answers

- **What is this?** AKK FX3-ultimate 5.8GHz 25/200/400/600mW Switchable Mini VTX, OSD Configuring via Betaflight, Supports Pit Mode, MMCX+UFL Connector, Smart Audio Compatibility by akk
- **How much does it cost?** A$55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/256250489-akk-fx3-ultimate-5-8ghz-25-200-400-600mw-switchable)

## Best For

- akk enthusiasts

## Why This Product

- Trusted akk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pit Mode Ready:** Instantly mute your signal during races or practice sessions to stay in the game without interference.
- • **Compact Yet Mighty:** Lightweight 5.4g design with MMCX+UFL connectors fits perfectly on any build without weighing you down.
- • **Smart Audio Mastery:** Configure your VTX on the fly via Betaflight OSD for seamless in-flight adjustments.
- • **Plug & Play Precision:** One-button setup for channel, band, and power—get airborne faster with zero hassle.
- • **Power to Push Boundaries:** Switch effortlessly between 25mW, 200mW, 400mW, and 600mW for ultimate range control.

## Overview

The AKK FX3-ultimate is a versatile 5.8GHz mini video transmitter designed for professional FPV pilots. It supports a wide 7-24V input, offers switchable power outputs from 25mW up to 600mW, and features OSD configuration via Smart Audio for real-time adjustments. Equipped with MMCX and U.FL antenna connectors and a lightweight 5.4g frame, it ensures reliable, interference-free transmission with Pit Mode support for race-ready performance.

## Description

Features: SUPPORT Pit Mode 7-24V input, 5V output for your camera 25mW/200mW/400mW/600mW power switchable 0.01mW parameter-adjusting Mode, power with zero interference MMCX+UFL connector, One button setup channel/band/power With MIC, OSD configuration using Smart audio Specifications: Input voltage: 7V-24V Power supply: 5V Camera @ under 0.3A max. Output power: 25mW: 100mA 200mW: 200mA 400mW: 250mA 600mW: 320mA @12V Range: Up to 2 km with omnidirectional RHCP antennas Port connector: Solder Pads Antenna connector: MMCX/U.FL Dimensions: 26(W)x26(D)mm,20x20mm(hole) Weight:5.4g(excluding antenna) Package includes: 1x FX3-ultimate 1x Cable 1x MMCX Antenna 1x Product manual Notice: 5645,5925,5945(E4,E7,E8) channels are not available due to FCC regulation. Selecting 5645/5925/5945(E4/E7/E8) will be invalid action. Please read the Info before purchasing. Due to the equipment need being sold under the FCCs amateur radio rules. This product requires an amateur radio license to operate legally in the US. Operators must abide by all applicable laws and hold an amateur license to operate this equipment. Use of amateur equipment without a license could subject the operator to significant fines by the FCC.

Review: Using this vtx on a 4 inch long range build and it has crystal clear transmission, especially when paired with the caddx ratel camera I'm using it with. The vtx table was easy to setup and the smart audio works without issue.
Review: Don’t waste your money on this there is way better out there at the same price.

## Features

- 7 24V input, 5V output for your camera
- 25mW/200mW/400mW/600mW power switchable
- With MIC, OSD configuration using Smart audio
- MMCX+UFL,Solder Pads connector, One button setup channel/band/power
- 0.01mW parameter adjusting Mode, power with zero interference.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DYL677Z |
| Item model number | FX3-ultimate |
| Manufacturer | AKK |
| Product Dimensions | 7.9 x 6.1 x 2.01 cm; 40.82 g |

## Product Details

- **Amperage:** 0.3 Milliamps
- **Brand:** AKK
- **Compatible devices:** Cameras
- **Compatible phone models:** iPhone series, Samsung Galaxy series, and other 5V-charging-capable smartphones
- **Connector type:** MMCX+UFL
- **Included components:** Camera, Product Manual
- **Input voltage:** 24 Volts
- **Special features:** Smart Audio Compatibility
- **Total USB ports:** 1
- **Wattage:** 45 watts

## Images

![AKK FX3-ultimate 5.8GHz 25/200/400/600mW Switchable Mini VTX, OSD Configuring via Betaflight, Supports Pit Mode, MMCX+UFL Connector, Smart Audio Compatibility - Image 1](https://m.media-amazon.com/images/I/61EgoNkMuqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***. on 3 August 2025*

Using this vtx on a 4 inch long range build and it has crystal clear transmission, especially when paired with the caddx ratel camera I'm using it with. The vtx table was easy to setup and the smart audio works without issue.

### ⭐ Review
*by M***2 on 24 July 2022*

Don’t waste your money on this there is way better out there at the same price.

### ⭐ Review
*by C***N on 5 April 2020*

Does not working with smartaudio otherwise works ok

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.au/products/256250489-akk-fx3-ultimate-5-8ghz-25-200-400-600mw-switchable](https://www.desertcart.com.au/products/256250489-akk-fx3-ultimate-5-8ghz-25-200-400-600mw-switchable)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-20*