Radar Launch Monitors: Eight Units Sorted by Room Depth

Doppler radar is the tracking type most golfers meet first when they shop for a launch monitor, and it is also the one that surprises buyers most often in a home room. The sensor sits behind the golfer, so a radar unit needs a long run of floor between the hitting area and the screen before it can read the ball cleanly. Get that depth wrong and even the best data on the spec sheet is no use.

This page covers eight radar units, from a few hundred dollars to well above $20,000. Before the product notes, we explain how a Doppler sensor sees a swing, why the ball has to fly a set distance before spin can be read indoors, and how to add up the depth a room really needs. If your room is under about 14 feet deep, read the section on when a camera or overhead unit is the better buy before you order anything.

How we put this together: we compared published manufacturer specs, retailer listings and owner reports, then applied the criteria below. Links may earn us a commission.

Pick	Our label	Best for	Price (approx.)
Garmin Approach R10	Pick for a phone-in-pocket range session	Range sessions with a phone	About $599.99 at time of writing; check current price
Swing Caddie SC4	Pick for golfers who want numbers without a phone	Carry and spin on the unit's own screen	About $499 to $599 at time of writing; check current price
Ernest Sports ESB1	Pick for comparing numbers to tour averages	Benchmarks against PGA and LPGA stats	Under $600 at time of writing; check current price
GolfJoy Waver	Pick for the lowest cost of entry	The cheapest route into Doppler data	Roughly $300 to $400; check current price
FlightScope Mevo+	Pick for a 16-foot garage that also goes to the range	Garage use plus range sessions	About $2,000 to $2,500 depending on edition; check current price
Full Swing KIT	Pick for range sessions filmed in 4K	Radar with a built-in 4K swing camera	About $4,999 listed at time of writing; check current price
FlightScope X3C	Pick for subscription-free fitting data	Fitting data with no subscription for core use	From $14,995 at time of writing; check current price
Trackman 4	Pick for coaches who need full-flight outdoor data	Coaches tracking full flight outdoors	Well above $20,000 at time of writing; check current price

Radar units at a glance: price, depth and spin method

The table lists each unit's list price at time of writing, the radar type, the depth it needs indoors, how spin is obtained, whether it has a built-in display, and whether course play needs a subscription. Where the maker doesn't publish a figure in our sources, the cell says so and points you to the maker.

Unit	List price at time of writing	Radar type	Indoor depth needed	How spin is obtained indoors	Built-in display	Subscription for course play
GolfJoy Waver	Roughly $300 to $400 (check current price)	3D Doppler, 15 measurements	Check with the maker	Check with the maker	Not listed	Not listed
Swing Caddie SC4	About $499 to $599 (check current price)	Doppler radar	Check with the maker	Check with the maker	Yes	E6 Connect sold separately
Ernest Sports ESB1	Under $600 (check current price)	Portable radar	Check with the maker	Check with the maker	Yes, LCD screen	Not listed
Garmin Approach R10	About $599.99 (check current price)	Single Doppler radar	About 14 ft deep, 10 ft wide, 9 ft ceiling	Check with the maker	Not listed; uses the Garmin Golf app	Garmin Golf membership for full Home Tee Hero course access
FlightScope Mevo+	About $2,000 to $2,500 depending on edition (check current price)	Radar plus image processing (Fusion Tracking)	Around 16 ft recommended (check current guidance)	Metallic ball stickers recommended (check current guidance)	Not listed	Varies by edition
Full Swing KIT	About $4,999 listed (check current price)	Doppler radar plus 4K camera	Check with the maker	Check with the maker	Not listed	Free app; check for paid tiers
FlightScope X3C	From $14,995 (check current price)	3D Doppler plus photometric imaging	16 ft, unit sits behind the ball	Metallic ball stickers for best spin accuracy	Not listed	None required for core data
Trackman 4	Well above $20,000 plus software tiers (check current price)	Dual Doppler radar plus OERT	Check with the maker	Check with the maker	Not listed	Software tiers

If your room is under about 14 feet deep, read the section titled When to pick a camera or overhead unit instead before buying anything in this list. Prices change often, so treat every figure above as a starting point and confirm it on the retailer's page.

Compare current radar monitor prices

What a Doppler sensor actually sees on each swing

A Doppler radar sends out microwaves and listens for the change in frequency that bounces back off a moving object. When the club head comes through the ball, and again when the ball leaves the face, the returning signal shifts in a way that tells the sensor how fast each object is moving and in which direction. The unit turns those shifts into ball speed, launch and, on most models, spin. The catch is that the sensor only sees what is inside its field of view, and where you place the unit decides how much of the swing that is.

Outdoors that view is wide open. The ball keeps flying, and a capable unit can follow it for most of its path. Trackman describes the Trackman 4 as tracking roughly six seconds of flight, which covers the whole shot for most golfers. Indoors the picture changes. The ball meets the screen after about 8 to 12 feet, so the sensor sees only the first few feet of flight. Carry, apex and descent are then worked out by a model from the launch numbers. They are useful estimates, not observations, and that difference should shape how you read your numbers. For a wider look at how each tracking method handles this, see radar versus camera tracking compared, and for the underlying mechanics of how launch monitors read a shot, see how launch monitors measure a shot.

Single radar units read the core ball numbers: ball speed, launch and spin. Dual radar, as on the Trackman 4, adds more club detail such as path and face angle. Hybrid units add a camera. The Mevo+ and X3C use Fusion Tracking, which combines radar with image processing. The Trackman 4 adds OERT (Optically Enhanced Radar Tracking) for impact location. The Full Swing KIT carries a 4K camera that is used mainly for swing video. The camera part of each hybrid is there to fill gaps that radar alone leaves, such as where the face met the ball and how a low-speed shot behaves.

Read numbers versus calculated numbers

Ball speed and launch are read in the first feet of flight, so they are the figures a radar unit has the best chance of reading directly indoors. Carry, curve and apex are not seen indoors at all. The screen stops the ball before the sensor can follow it, so the unit calculates those figures from the launch data. A calculated carry can be a sensible guide to how far a shot would go, but it will not match a flight the sensor has actually watched.

Club data is a separate question. On single-radar units the club figures are often estimated rather than read directly, and the method varies from model to model. Before you buy, check the maker's notes for the exact unit you are considering, and ask yourself whether you care more about the ball numbers or the club numbers. That answer will tell you whether a single radar unit is enough.

Why the sensor sits behind you

Radar needs distance behind the ball so it can see the club coming through the impact zone and the ball leaving the face. A unit placed too close to the ball loses the club's approach, and a unit placed too far back gives the ball less of the sensor's field to work with. That is the main reason radar rooms are deeper than camera rooms. A camera unit can sit beside the ball and work inside a few feet of space. A radar unit has to sit on the target line, which means the room has to be deep enough for the sensor to sit behind the golfer and still reach the ball in view.

Room depth math for a radar bay

Start with one formula: unit-to-ball distance plus ball-to-screen distance plus the gap between the screen and the wall equals the total depth you need. Each part matters. Shave a foot off the screen gap and you gain a foot, but shave a foot off the unit-to-ball distance and the sensor may lose the club. Work through the numbers for the unit you have in mind, and check them against the maker's placement diagram before you frame anything.

Garmin Approach R10. The R10 sits 6 to 8 feet behind the ball. Add 8 feet from ball to screen and about 1 foot of gap behind the screen. At the near end, 6 + 8 + 1 gives 15 feet. At the far end, 8 + 8 + 1 gives 17 feet. Garmin's published guidance is about 14 feet deep, 10 feet wide and 9 feet high, which sits below the 15 to 17 feet that the same placement numbers produce. The two figures don't fully reconcile, so plan for the larger one. A 14-foot room is at the edge of what the maker describes, and by our math it is tight.

A 12-foot room. Take the same formula backward. A 12-foot room with a 1-foot screen gap and an 8-foot ball-to-screen distance leaves 3 feet between the ball and the back of the room for the unit. That is well short of the 6 to 8 feet the R10 needs, and it explains why a 12-foot room is a problem for any radar unit with a deep placement requirement.

FlightScope X3C. The X3C is published at 16 feet of indoor depth, with the unit sitting behind the ball. Treat that as the minimum for a practical bay, and check the maker's placement diagram before settling on a layout.

FlightScope Mevo+. The Mevo+ is commonly cited at around 16 feet. Check FlightScope's current guidance before relying on that number. Aim for the figure rather than the minimum, because the screen gap and the placement distance both shift when you change the layout.

Ceiling height. Ceiling height matters less for radar than for overhead units, because the sensor sits on the floor. The golfer still needs room to swing, and 9 feet is the figure most often cited for a comfortable bay. Check your longest club and full backswing against that number before you buy.

Width. Radar sits on the target line, so a left-handed and a right-handed golfer can share the same unit without moving it far. Side-mounted camera units are harder to share, because the camera has to be repositioned for each golfer's stance. Width is rarely the limit for radar. Depth almost always is.

How we sorted the eight units

The framework has five criteria, each with a weight. Indoor fit covers the depth a unit needs and how it handles a short flight, and it carries 30 percent because a radar unit that doesn't fit the room is useless however good its data is. Ball data depth and how spin is obtained carries 25 percent, because indoors a buyer's trust in wedge and driver spin depends on that choice. Outdoor value carries 15 percent, since radar is the only tracking type that follows the full flight outdoors. Simulator software and running cost carries 20 percent, because course play depends on which programs a unit connects to and what they cost each year. Portability and power carries 10 percent, covering battery life, size and whether a built-in display removes the need for a phone.

We applied the framework to published specifications, maker guidance, owner reports and list prices. We did not run any of these units ourselves, so each note describes what the maker publishes and what owners report, not results we observed. The eight units fall into three price tiers, and within each tier the order follows the framework. Readers who want to compare radar with the other tracking types can start with launch monitors across every tracking type. We give no numeric scores here. Each unit gets a pick label that describes the buyer it suits best.

Entry radar for range bags and first home setups

The four units in this tier cost under about $700 at time of writing. They share one limit: indoor spin and club data are less dependable than on mid and premium units. Treat indoor wedge spin from any of them as approximate, and judge them mainly on full swings in a room with enough depth. If your budget sits lower still, our launch monitors under $500 roundup covers the cheapest options in more detail.

Garmin Approach R10: the pocket-sized all-rounder that needs a deep room

The R10 is the smallest unit in this roundup, about the size of a deck of cards, and its battery is listed at about 10 hours. That is the main reason range users like it. You can clip it on, run a full session and not think about charging. It is a single Doppler radar, and it works with a long list of simulator software, including Awesome Golf, E6 Connect, Garmin's Home Tee Hero and TGC 2019.

The list price is about $599.99 at time of writing, so check current pricing before you buy. The room is the catch. Garmin's guidance is about 14 feet deep, 10 feet wide and 9 feet high, with the unit 6 to 8 feet behind the ball. The depth math earlier in this article puts the practical figure closer to 15 to 17 feet, so a room that only just meets the published number leaves little margin for error.

The Garmin Golf app covers scorecards, shot history, weekly leaderboards and virtual tournaments, and the R10 records swing video clips with metrics attached. Full Home Tee Hero course access needs a Garmin Golf membership, and that yearly cost is one to check before you buy. The R10 does not measure putts in simulation, so it suits full-swing practice more than a short-game session. Some owners report setup and pairing problems, which is worth reading about before you commit.

Swing Caddie SC4: carry and spin on its own screen

The SC4 is the unit to consider if you don't want a phone in the loop. Its built-in display shows carry, ball speed, launch angle and spin rate, and it works without a paired device. A remote control and voice distance output mean you can keep your phone in the bag, which is useful on a range where a phone screen is hard to read in bright sun.

For virtual range sessions, swing video and overlays, the MySwingCaddie app connects over Bluetooth. The E6 Connect software works with the SC4 but is sold separately, so add it to your budget if you want simulator courses. The box includes a USB cable, a cover and the manual. The list price is about $499 to $599 at time of writing. Check current pricing before you buy, because that range moves.

Ernest Sports ESB1: a simple unit with tour stat comparisons

The ESB1 is a portable radar with a small LCD screen, offered in white or black. Setup is quick, and the Ernest Sports app shows each shot alongside PGA and LPGA stat comparisons, with personal adjustment settings. That makes it a good fit if you want benchmarks, such as how your carry compares with a tour average, rather than a long list of club data.

The battery is rechargeable and lasts longer than on earlier Ernest models, and firmware updates arrive by download. The data depth is lighter than the premium units in this roundup, so the ESB1 suits golfers who want a clear picture of ball flight more than a deep dive into club path or face angle. The price is under $600 at time of writing. Check current pricing for the exact figure, since the maker's list can change.

GolfJoy Waver: cheapest way into Doppler data

The Waver is the lowest-cost unit in this roundup, at roughly $300 to $400 at time of writing. Check that figure before you buy, because it is the least certain price in the set. It uses 3D Doppler and measures 15 data points. The GolfJoy Lite app acts as a remote, letting you switch modes, choose a course, and run practice or game modes, with shot suggestions. It works indoors and outdoors and comes in two colours.

Battery life is shorter than the R10's, at around 4 to 5 hours, which matters on a long range day. Bring a power bank if you plan to hit for a full afternoon. GolfJoy is a newer brand, so check the warranty and support channels before you buy. A short track record doesn't mean a poor product, but it does mean fewer owner reports to compare against the older names.

Mid-price radar with camera help

Between roughly $600 and $2,000 there is a gap in this roundup, and it is the place where image processing starts to be added to radar. The Mevo+ is the only unit here that sits in that space. Its pitch is that a camera works alongside the radar to fill in what radar alone misses, which makes it a different buy from the entry units above it on this page and a cheaper one than the premium three below.

FlightScope Mevo+: radar plus image processing for garage and range

The Mevo+ uses Fusion Tracking, which combines Doppler radar with image processing. The base unit reports 20 data parameters, and the Pro Package adds 11 more. The unit also offers Face Impact Location, which shows where on the face the ball was struck. Limited Edition bundles have included a 12-course software package that covered Pebble Beach and St Andrews, but bundles change between editions, so check what the current package includes before you buy.

The FS Golf app adds practice modes, challenges and video. The price is about $2,000 to $2,500 depending on edition, so check current pricing and compare what each edition adds. The price gap between editions is the main decision here. A buyer who only wants the core data may not need the top package, while a buyer who wants face impact and the larger data set will find the extra money easier to justify.

For indoor spin, FlightScope recommends metallic ball stickers, and that advice is the first thing to confirm against current guidance. The Mevo+ also has a slight learning curve, so expect a session or two of setup before the numbers settle into a routine. For a garage, the unit is commonly cited at around 16 feet of depth, which is the figure to plan around. If you are weighing it against the R10, our Mevo+ against the R10 comparison sets the two side by side, and our Mevo+ review covers the unit in more depth.

See today's deals on entry radar units

Premium radar for coaches, fitters and serious outdoor practice

At this tier the extra money buys full-flight outdoor tracking, impact location, putting and short-game reads, and fitting software. These three units are built for coaches, fitters and players who practise seriously outdoors. For a home player who mostly wants course play, the gains are hard to justify against the cheaper units above, and the sections below explain where the premium cost pays off and where it does not.

Full Swing KIT: radar with a built-in 4K swing camera

The KIT combines Doppler radar with a built-in 4K camera and reports 16 data points. The free Full Swing app runs on iPhone, iPad and Apple Watch, supports Bluetooth headphones, and lets you customise the data layout. It also includes dispersion charts, averages and progress tracking, which makes it a good fit for a player who wants to see patterns over many sessions rather than single shots.

The KIT launched at $3,999 and is listed at about $4,999 at time of writing, so the price has moved up since launch. Check current pricing before you buy. Some owners report inconsistent club and ball speed readings. Before you commit at this price, read recent owner reports and check how the maker's support handles those complaints. A camera that records a clean swing video does not help if the speed numbers are unreliable.

FlightScope X3C: carbon shell, fusion tracking and no fees

The X3C is the most detailed unit on this list for fitting work. It pairs 3D Doppler radar with photometric imaging, which FlightScope calls Fusion Tracking, and it reports more than 50 metrics, including face-to-path, attack angle, curve and vertical descent. It tracks full swings, chips and putts. The shell is hand-built carbon fibre, with an integrated kickstand and auto-levelling feet, which makes it easier to set up on an uneven floor.

Key specifications, as the maker lists them:

Size: 12 x 10 x 1.875 in
Weight: 6 lb 10 oz
Indoor depth: 16 ft, unit placed behind the ball
Metrics: 50+, including face-to-path, attack angle, curve and vertical descent
Environmental optimiser: normalises wind, altitude and temperature
Course software: FS Golf, E6, GSPro and TGC 2019
Video: multicam support
Warranty: 12 months
Subscription: none required for core data
Phone or tablet: iOS 17 or later, or Android 10 or later; recommended iPad Pro (6th generation) or later, or a Snapdragon 8 Gen 1 or later Android device
Windows PC: Windows 10 or 11; minimum Intel i3 with 8 GB RAM; recommended i5 or Ryzen 5 with 16 GB RAM

At $14,995 at time of writing, the X3C sits between the KIT and the Trackman 4 on price. Check current pricing, because the listed figure is a starting point. Its no-subscription model is the reason many fitters weigh it heavily, since the core data needs no yearly fee. Metallic ball stickers are needed for the best spin accuracy, so budget a little time for sticker placement. If you are deciding between this unit and the earlier X3, our FlightScope X3 vs X3C page covers the differences, and our X3C against Trackman page compares it with the most expensive unit in this roundup.

Trackman 4: dual radar and full-flight tracking

The Trackman 4 is the most capable unit here and the most expensive. It uses dual Doppler radar plus OERT (Optically Enhanced Radar Tracking) for impact location, and it reports more than 40 parameters. Outdoors it tracks the whole flight, roughly six seconds, and the maker describes it as working indoors and outdoors, day or night, in any weather.

The software side is broad. It includes Performance Putting, club fitting software, virtual golf, and an AI coach called Tracy. The price is well above $20,000 at time of writing, plus software tiers, so check current pricing before you consider it. The cost is the main drawback. Home players who only want course play should not buy it, because they would be paying for coaching and fitting features they will not use. For fitters and coaches who need full-flight data outdoors, the same cost can be easier to justify.

Getting trustworthy spin from radar indoors

Spin is where radar struggles most in a home room. A short indoor flight gives the sensor less signal to read, and the figures that depend on spin carry the most uncertainty. The checklist below covers what the makers recommend and what owners say helps. None of it removes the limit, but each step reduces the noise you have to live with.

Use stickers only if the maker recommends them for your unit. FlightScope advises metallic or reflective stickers for indoor spin on the Mevo+ and X3C, so check current guidance and place the sticker as the maker's diagram shows.
Use clean, consistent premium balls. Scuffed range balls give noisier readings, and a ball that changes shape from shot to shot makes spin harder to read.
Keep the unit level and aimed down the target line. Recalibrate after you move it, even slightly, because a change in angle changes what the sensor sees.
Keep fans, swinging doors and moving objects out of the radar's path. Anything that moves in the field of view adds noise to the signal.
Set the screen distance and the unit placement before you hit anything for real. A layout that changes between sessions makes spin figures hard to compare.
Treat wedge spin indoors as approximate, especially on entry units. The short flight leaves less to read, so use the numbers for trends rather than precise targets.

Taking a radar unit outside

Radar's real advantage shows up outdoors. A capable unit follows the ball through most of its flight, so carry and curve are observed rather than modelled from launch data. That is the reason radar is often the first choice for a player who wants range data. Sunlight does not affect radar the way it can affect camera-only units, so a bright range is not a problem for the sensor itself, although a phone screen may be.

Battery life matters on a full session. The R10 is listed at about 10 hours, and the Waver at 4 to 5 hours. If you plan to hit for a whole afternoon with the Waver, bring a power bank and check the battery before you leave the house. The SC4 and the ESB1 both have built-in displays, which helps on a bright range where a phone is hard to read or stays in the bag.

Owners who record sessions across different days or courses will find the X3C's environmental optimiser useful. It normalises readings for wind, altitude and temperature, so a shot hit on a windy morning can be compared with one hit in calm conditions. That is a fitting feature as much as a range feature, and it is one reason the X3C suits coaches who track trends across many sessions.

Range etiquette takes a little planning. Place the unit behind the hitting area, keep it clear of other golfers, and check the spacing before you set up next to another radar unit. Radar units placed close together may interfere with one another, so check the maker's guidance on nearby units before you set up in a shared bay. If you use the unit on a public range, ask whether the range permits radar devices before you bring one.

Yearly running costs once the unit is paid for

A launch monitor's price tag is only the first number. Course play, software and membership fees can add more each year, and those costs often decide which unit is cheapest over three years. The table below lists the purchase price at time of writing and the main ongoing cost for each unit. Where a figure isn't published in our sources, the cell says to check it.

Unit	Purchase price at time of writing	Ongoing software or subscription	Check before buying
GolfJoy Waver	Roughly $300 to $400	App terms not listed in our sources	App and any paid features
Swing Caddie SC4	About $499 to $599	E6 Connect licence sold separately	E6 Connect pricing
Ernest Sports ESB1	Under $600	Not listed	App and any paid features
Garmin Approach R10	About $599.99	Free Garmin Golf app basics; full Home Tee Hero course access needs a Garmin Golf membership	Garmin Golf membership price
FlightScope Mevo+	About $2,000 to $2,500 depending on edition	FS Golf app; Pro Package adds data; course bundles vary by edition	Edition, package and bundle contents
Full Swing KIT	About $4,999 listed	Free app	Any paid tier
FlightScope X3C	From $14,995	None required for core data	Current list price
Trackman 4	Well above $20,000	Software tiers	Software tiers you need

The X3C is the clearest case of no ongoing fee for core data, which makes it easy to compare with the rest. For the other units, add the software you plan to use to the purchase price before you compare. Third-party software has its own pricing, including E6 Connect, GSPro, TGC 2019 and Awesome Golf, so check each one. To see the broader pattern of how simulator software is priced, our software subscription models page explains the main structures, and the monitors with no subscription page lists the options that avoid a yearly fee.

When to pick a camera or overhead unit instead

Radar is not the right tool for every room. Work through the questions below in order. Each answer points you either to radar or to a different tracking type, and the first question matters most for most buyers.

Is the room under about 14 feet deep?
- Yes: look at photometric units placed beside the ball, or at overhead units, which need less depth. Our overhead units for shallow rooms roundup is the place to start, and the launch monitors suited to indoor rooms guide covers the options that work in tighter spaces.
- No: move to question 2.
Do you plan a lot of putting in simulation?
- Yes: the R10 does not read putts in simulation. Overhead and camera units often do, so look there first.
- No: move to question 3.
Do you want the most dependable indoor spin for under $1,000?
- Yes: camera units read spin from images, so they are the better fit at that budget.
- No: move to question 4.
Do you share the unit between left- and right-handed golfers?
- Yes: radar is a strong choice here. It sits on the target line, so both players can hit from roughly the same spot without moving the unit.
- No: radar is a good fit for full-swing practice as long as the room is deep enough.

The radar versus camera tracking compared page goes deeper on the trade-offs, and the launch monitors across every tracking type roundup covers units outside radar entirely. If you are setting up a left-handed and right-handed household, our setups for left and right handed golfers guide shows how the layout changes the answer.

What radar buyers ask before ordering

Most of the questions below come up once a buyer has a room measurement and a shortlist. The answers are short, but they tie back to the depth and spin points above. For help measuring the room, see the full room size guide and the note on ball-to-screen distance.

Will a radar launch monitor work in a 12-foot-deep room?

Usually not well. Garmin's R10 guidance is about 14 feet deep with the unit 6 to 8 feet behind the ball, and the X3C needs 16 feet. The Mevo+ is commonly cited at around 16 feet, so check current FlightScope guidance. At 12 feet the unit ends up either too close to the ball or the ball too close to the screen, so a camera unit beside the ball or an overhead unit is the safer choice.

Do I need to put stickers on every ball?

No. Stickers only make sense for units whose maker recommends them for indoor spin, such as the FlightScope Mevo+ and X3C, and you should check current guidance. Outdoors the longer flight gives the radar more to read, so stickers matter less there. Without stickers, ball speed and launch still read, but spin is the figure that suffers most.

Can left- and right-handed players share one radar unit?

Yes, and more easily than with side-mounted camera units. Radar sits behind the ball on the target line, so both players hit from roughly the same spot. Check that the app you plan to use has a handedness setting before you buy.

How well does radar read chips and putts?

Low-speed shots give a weak radar signal, so radar alone is less reliable on chips and putts. Units with camera help handle them better. The X3C's Fusion Tracking follows full swings, chips and putts, and the Trackman 4 has Performance Putting. The Garmin R10 does not measure putts in simulation, so entry units are best used for full swings.

Does cold or damp weather change radar readings?

The radar itself is not affected by light or dark, and the Trackman 4 works day or night. Cold shortens battery life and reduces real carry distance, and outdoor radar will show that faithfully. Check each maker's weather rating before using a unit in rain, since ratings vary by model. The X3C's environmental optimiser can normalise wind, altitude and temperature.

Doppler Radar Golf Launch Monitors: How Much Room They Need and What They Read Indoors