The BetaFPV LiteRadio 4 is a price range pleasant radio with built-in ExpressLRS module. In case you’re contemplating the LiteRadio 4 as your first FPV controller—or maybe as a secondary radio to your tiny whoops—this overview ought to allow you to resolve whether or not it matches your wants.
New to FPV? Study the fundamentals of radios in our purchaser’s information: https://oscarliang.com/radio-transmitter/
The place to Purchase
Get the LiteRadio 4 from:
BetaFPV clearly put effort into the packaging. The LiteRadio 4 comes properly protected, contains gimbal covers, and ships with:
- USB-C cable
- A thick, beginner-friendly guide
- The radio itself
Specs
- Channel: 10
- Shade: Grey (Commonplace Model), grey blue (Twilight Restricted Version)
- Gimbal: Potentiometer (Commonplace Model), Corridor (Twilight Restricted Version)
- RF System: ExpressLRS 2.4GHz
- RF Output Energy: 25mW/50mW/100mW (adjustable)
- Simulator Connection: Bluetooth and USB-cable connection
- Supported Simulator: Most simulators and DJI Digital Flight
- Port: Sort C port (integrates information switch and charging)
- Charging Energy: 5V, max 3A
- Battery: Constructed-in 1S 2000mAh LiPo
- Run time: 4-5 hours at 100mW or max 8 hours at 25mW
- Dimensions: 172.5mm*118.5mm*72.5mm
- Weight: 210g
Design and Construct High quality
The LiteRadio 4 is compact and light-weight, virtually game-controller-like. I’ve a sense it’s considerably impressed by DJI’s Distant Controller 3 primarily due to the same change format. Even the ability on/off is similar – you faucet the ability button as soon as then maintain it for 3 seconds to show it on. One factor they didn’t copy is the gimbal sticks which is a missed alternative – you may’t take away them and retailer them on the again of the radio just like the DJI.
Let’s be sincere—this isn’t a premium radio. The shell is skinny plastic, and for those who squeeze the physique, you’ll hear some creaking. There’s a little bit of flex for those who twist it too. However regardless of that, it doesn’t really feel fragile. You’d should intentionally abuse it to truly break it.
On the underside, you will have Bind button, USB port, and Setup button (used for gimbal calibration as properly).
Gimbals
The usual model comes with potentiometer gimbals, NOT Corridor-effect ones. BetaFPV gives a particular version that comes with Corridor gimbals if you would like.
I’ve seen complaints in regards to the earlier LiteRadios with jittery gimbals, I’m comfortable to report that the brand new LiteRadio 4 I examined didn’t have this situation. They definitely aren’t premium gimbals, however they held their mid level and finish factors completely (1500 midpoints, 988–2012 endpoints) after calibration, with none jittering in any respect.
- Plastic gimbal our bodies
- Steel stick ends
- Potentiometer sensors
- Stick peak adjustable
If you’re used to full dimension gimbals (like those within the Boxer, TX16S and T20S), you’ll most likely discover the stick travels on these tiny gimbals a bit restricted. However for brand spanking new pilots it’s not essentially a foul factor.
There are gimbal trim buttons on the entrance, which is a pleasant addition. They’re often solely helpful for mounted wings with out flight controllers, so for those who don’t fly these, you don’t want to fret about them.
Switches & Controls
Regardless of ExpressLRS supporting as much as 16 channels, the LiteRadio 4 is restricted to 10 because of the variety of bodily switches out there. However that’s greater than sufficient for most individuals—personally, I solely use 4 switches in most of my setups, so eight channels are often loads for me.
Listed below are the switches on the LiteRadio 4:
- Two 2-position switches (SA & SD)
- Two 3-position switches (SB & SC)
- Two momentary switches (SE & SF)
I discovered the switches surprisingly tactile, with sufficient resistance to keep away from unintended flips throughout flight.
Connectivity & Charging
On the backside, the radio has a single USB-C port that handles:
- Charging (as much as 15W quick cost)
- USB Joystick mode for FPV simulators
- Configuring the interior ExpressLRS module
- Firmware flashing
Charging from empty to full usually takes lower than 1 hour, and the 1S 2000mAh inside battery offers:
- ~8 hours at 25mW
- ~4–5 hours at 100mW
Inner ExpressLRS Module
The LiteRadio 4 has a built-in ExpressLRS 2.4GHz module with selectable output energy:
Don’t be postpone by the 100mW output – it may appear low, however for ExpressLRS radio hyperlink, even 100mW can simply get you 2–3km in open area (I’ve personally completed it). ExpressLRS is insanely environment friendly in the case of vary. That mentioned, this radio is completely nice for park flying and indoor whooping—however I wouldn’t belief it for long-range or high-reliability functions, it’s merely not what it’s made for.
There’s no module bay on this radio, so you can not use exterior modules.
Software program Configuration
This radio isn’t EdgeTX, and it has no display, which suggests if you wish to configure the radio, you should plug it into your laptop, and use the BetaFPV Configurator app.
This configurator enables you to:
- Change channel assignments
- Reverse channels
- Modify scaling
- Set mode (Mode 1 or Mode 2)
- Configure RF energy and packet price
- Replace firmware
The interface is beginner-friendly—far less complicated than EdgeTX—but in addition much more restricted in the case of options. You’ll be able to’t setup completely different profiles for particular person fashions, and you’ll’t simply change radio settings within the subject. Newbies could discover it simpler to select up, however skilled pilots could discover it irritating.
Teardown
Listed below are some pictures taking the LiteRadio 4 aside, exhibiting the primary board, battery, gimbals.
Closing Verdict: Ought to You Get The LiteRadio 4?
The BetaFPV LiteRadio 4 may be the most affordable ExpressLRS radio on the market, however isn’t for everybody.
It’s a price range radio designed for FPV newbies who wish to spend absolutely the minimal, or pilots with small fingers. Nevertheless, it’s NOT a radio you may develop with long-term. If you need one thing future-proof, it is best to contemplate the Radiomaster Pocket, which is just $15 extra and it’s much more succesful. Try my overview of the Pocket: https://oscarliang.com/radiomaster-pocket/
“However Oscar, I don’t have the additional $15…”
Truthful sufficient, then the LiteRadio 4 remains to be an inexpensive choice.
