Build Your Own Drone Tracking Radar: Part 1

[@AlexK-jp9nc]

finally a radar DIY that isn't actually a sonar

[@АлексейСергеев-ф6г]

Гидролокатор местами сложнее: среда очень неоднородная, да и широкополосных помех от животных бывает много.

[@nikitacheblokov8032]

​@@АлексейСергеев-ф6г Много проектов на Ютубе заявляют что делают "радар" когда на самом деле, они используют ультразвуковые дальномеры. Гидролокатор ещё никто на Ютубе не делал

[@blacklion79]

DIY? It uses ready-made hardware which costs $2800

[@AlexK-jp9nc]

@@blacklion79 and does anyone else assemble it? or do you Do that Yourself? and anyway i just wanted the design. I'm capable of getting the components around on my own

[@Bbhai24]

Pray for safety of innocent Bangladesh Hindu, Bauddh, jain and shikh, tribe and chirstian

[@egeres14]

This guy is so professional, watching his videos feels like speed running the telecommunications bachelor, thank you so much for explaining everything with this clarity, I'm looking forward to see this series 🎉

[@timothybaldinger261]

He got my sub just by the way he is speaking to everyone.

[@phoneaccount6907]

He is Analog Devices employe

[@MountainCatBob]

Slick! I'm a retired ET who maintained the first phased array military RADAR SPS 32 on Enterprise back in the 70's. The electronics for each panel occupied (I think) 3 units full of control circuits, 4'X4'X7' tall, one with a single 8-bit register to run the phase shifting function. And to see such a FANTASTIC handheld device demonstrated so flawlessly is simply delightful. I'm going to make one to see how low those bloody helicopters are flying! Cheers!

[@jonkraft]

Thanks! And thank you for your service! I think the job you were doing was much more difficult than doing this project in 2023. Very interesting to hear about phased array radars on an aircraft carrier.

[@NiteSaiya]

Will the police pay you a visit if a helicopter starts getting pinged from an unexpected location?

[@jum5238]

@@NiteSaiya I would guess that about the time you start registering the helicopter on your radar, you've already got bigger problems. Sounds like it's very short range.

[@Pwmclain]

I worked on GPS anti-jam in the 80s, on big military drones, wish we had the current capabilities then.

[@rbdan]

​@@NiteSaiya if you are using that much power on your personal radar system then the police are the least of your problems

[@roipaz8671]

The room and the video itself seems like a 90s TV worshop show... I love it!!!!

[@lifegettingintheway2710]

For quite a bit of the 1970s I worked in Marine Electronics, specializing in radar, gyro compasses, auto pilots, and telecommunications. I worked for Raytheon as a field engineer working on their commercial anti-collision radar. Some interesting radars I worked on were a Soviet S and X band radar where the S band wave guide and the x band wave guide were constructed like a coaxial cable - one inside the other. The slotted waveguide antenns were in the same scanner as a result. It was about 75' between the TR unit and the scanner and there were a lot of elbows in the wave guide along the route. Water was a serious problem and keeping them sealed was problematic. But my favorite radar was a hand-help chirp radar made by Whistler eponymously named Whistler Radar. It used headphones to listen to the beat frequency of the sent/received fm pulse. One curiousity is when aimed at a passing yacht one could here the vibrations of othe engine and stereo systems. These sounds vibrated the hull of the boat which modulated the radar echo (cw as you might expect) and speech was clearly understandable. Here and there in the internet are a few references to the Whistler Radar which was strapped on like an accordian and about the same size, head phones were donned, and targets were found to learn what the different sounds represented by visual objects, moving and stationary. I nearly got one recently on Ebay but it sold just hours before I saw it.

[@chimpo131]

k Boomer😂😂😂

[@lifegettingintheway2710]

@@chimpo131 Get off my lawn, kid! :)

[@AmitYadav-rp3ot]

This is gold. No unnecessary stuff. the SNR of these videos is just too damn high. love it. thank you so much. I wish your videos reaches to all the aspiring communication engineers

[@supremeleader5516]

Hi I am from India too, glad I found my countryman with similar interest

[@chaitubhojane6137]

@@supremeleader5516are you guys interested in 4d radars

[@bennydontplaythat]

High SNR video 😅

[@2maracas432]

If KZbin and the various other social networks were made by people like you, with your professionalism, your simplicity, the real interest in the topic in question, the desire to learn from others, without the constant craving for having to get views, even the world in general would be a great place to live in.....

[@emptech]

Way back in the '60's in school we built a simple doppler radar. We used cans similar to what you are doing. Back then we used a klystron to generate the microwave signal, with what was called a hybrid junction to provide the detector and mixer. In the '80's I would have used a Gunn plexor to generate the microwave and do the mixing. I remember the term "radar mile," the time it took for a radar signal to leave the transmitter, reflect from an object a mile away, and return. My memory says about 63 microseconds, but I'm probably wrong, it's been many years. I'll have to follow your videos, thanks for sharing. Jim H.

[@peanutbutterdijonnaise]

This content makes me wish my dad were still around these days, he loved tinkering with radio tech.

[@seeker4430]

Wow... It was my childhood dream to learn and build RF electronics... Radar, radios etc... Thanks a lot for making this series

[@NotSure416]

Analog Devices have some amazing engineers. It's always a pleasure to work with their products.

[@Shkvarka]

No way.. exactly what im trying to do, here in Ukraine, Odesa. Some sort of early alarm for Iranian/Russian UAV (shahed-136, shaded-129)... Really hope I will make it..

[@jimk8520]

Good luck with your project! Slava Ukraine!🇺🇦

[@sergiskenderov1310]

Hi, I'm also from Odessa, glad to see that so many people are trying to make great tools to save lives.

[@dano6187]

Probably not good to deploy an active radar system in a war zone if you wish to stay out of HARMs way.

[@letsgetsteve]

​@@dano6187I am pretty sure he will be fine... Being over 100km from the front, in friendly territory, and usings something super rudimentary, the risk is about 100 times greater that he gets yelled at for radio spectrum band or power infringements then to be targeted by anyone... I say, good luck man, and I hope you make something that works like a champ and saves more Ukrainian and other innocent lives.

[@timargentum7265]

Greetings from Chernihiv ;) Beware of anti-radar missiles, they used some of them in Dnipro region on yesterday's massive strike -_-

[@axoidmax]

your contribution is that you want to learn. Thank you. My dad was an Air Force JTAC/TACP and he tried to explain this to me but I didn't get it till I watched you learn and teach it.

[@justice32legends]

I don't think I can afford the phaser. But this clip's got me interested, so I'm gonna keep tabs on this playlist. Thanks man for all the references, sure helps!

[@floydwolverton2504]

Great video, Jon. I like your "practical engineer" presentation without all the self-praising word salad so many otherwise good engineers feel they have to impress us with. Nice job!

[@lazerusmfh]

As a radar guy, (I have many many radars) look forward to the rest of the series

[@MrHeuvaladao]

"As for me and my house, we will serve the Lord" I've found a wise man. Subscribed!

[@thereverant5203]

I served on a SAM site for quite some time so PAR/CW systems are not unknown to me. We used PAR for longer, over the horizon tracking and CW for shorter and low-altitude tracking. I've been fascinated with radar systems ever since and always wanted to build a small, portable one at some point as I I'm an electronics engineer but my focus is on digital systems and uCs, never analog or RF. Maybe this is the chance to begin.

[@geofftaylor8913]

I have always been fascinated by phase array technology. Very cool.

[@namanvu2651]

I work in digital design. Recently, due to project requirements, I had to learn more about embedded systems, specifically SDR. Actually, I feel a bit bored with this field. However, luckily I came across your channel. Keep it up, sir 🔥

[@MaxR52]

this guy has tim and eric confidence, great vid

[@michaelfuchs1467]

Perfect! Since a few months back I'm having a phased array radar project in my head and on my bench - for detecting small drones! In addition I have acoustic profiling on my mind... 😉

[@user-uq5qw1fk3d]

Looking forward to it! Subscribed. Edit: Please stick with Python instead of MATLAB for video 6!

[@migalito1955]

Very interesting. Being a retired math guy with a love of radio astronomy and radio in general I will definitely follow your series. From the two prices I looked up, Pluto, & two low noise amplifiers, which together sums to about $360 & by guessing the mixers are not terribly pricey & guessing the phaser might add another $200 to the whole it's not terribly cost prohibitive. Especially if pursued over time. Regardless of whether I attempt to build a system which I'd love to do Pluto has really caught my attention & I think its on my next radio gear list. Look forward to the sequence & thanks for documenting & sharing.

[@kckoellein]

The Phaser is in the neighborhood of $2800... Q.Q Still investigating if I can sell a kidney to pay for it, tho...

[@ashotyayloyan1296]

For a while I couldn't follow your videos. john, great job! Everything you provide in your videos is excellent material, especially for students of relevant specialties. Thanks very much!

[@chrisbritt9790]

Oh man! Jon Kraft! I have bought so many semi-conductors from you! This is amazing!

[@zainkhalid5393]

I'm a dummy when it comes to electronics. I've always been interested in Military tech especially radars and missiles. Unfortunately, I could not study the related course but still I ended up with my other passion for Computer Science. I wanted to build a drone for my final year project but was refused by my supervisor. Now that i've graduated, i dream to pick up my passion for radars & missiles as a hobby and build something cool. I've been following another series for building a guided rocket. I was looking for a video for radars as well and this looks promising, but the technology involved is beyond my understanding. I hope i can follow through this series. My end goal is to build a miniature missile defense system, at least for drones. 🤣 I don't even if it's possible especially with my nonelectrical skillset. But let's see!

[@catfunt5583]

As someone who switched from Comp Sci to electrical engineering. The hardware that we use is basically just physical if/and/or statements. People were constantly surprised at how fast I picked up and understood complicated circuitry, but if you know how to code it will lighten the learning curve _dramatically_. Best of luck friend

[@pallabmaji1085]

This is amazing. We are tying to build a low cost fmcw radar for Indian road safety.

[@diegob.p.9546]

This video was very good, it gave a presentation on the main aspects of radar systems. With practical examples from the most accessible to the most complex available for students and researchers. I just have to thank for your contribution.

[@neogeo8267]

Jon, this is excellent content! Your presentation is excellent - I look forward to seeing more from you. Thank you for sharing!

[@AstroCharlie]

Thank you so much for taking on this material in an approachable, hands-on manner. I've been trying to use a 900 MHz radar to ranging on amateur rockets, and I'm hoping to apply these concepts!

[@laulaja-7186]

If 900 MHz is wavelength 30 ish cm then can it even detect small drones? Might work better, to locate the drone based on its own emissions.

[@jerseyshoredroneservices225]

"Coffee can antenna" Instantly reminded me of the AT&T long lines towers that fascinated me as a young kid ❤

[@marcbonomini2751]

Fantastic content... I hope it remains in the public realm without much difficulty.

[@uploadJ]

Been using the Doppler returns from VOR and ATSC tv pilot carrier signals for some experiments ... many A/C returns can be seen using waterfall type SDR receiver displays. Subbed to keep informed of your progress too. Thanks.

[@rubhern8187]

Stumbled your channel by accident and found your delivery of contents very excellent. Such a complex field to grasp and understand you made it quite approachable and motivational. Remember the late Mr Jon Pease who delivered complex hardware into understandable real applications. Maybe a suggestion to explain math equations found in text books into real applications. Liked and subscribed

[@MikeMagTech]

I just found your channel and subscribed. I am a self taught "electrical engineer" specializing in vacuum tube high-end audio, particularly custom transformers, although in the course of my studies I came to really love math and electronics generally. I look forward to learning and working along with this project!

[@kevinburke5213]

I say a very humble and gracious thank you for the help and support. I'm so glad to have found the videos and once again I know it's only words but I really do appreciate the hard work put into these videos. More and more things like this need to be taught from a young age. I wonder can you recommend any software for a android user or maybe windows that I can carry out simulation builds. Before anyone thinks come on there is loads that's my problem which to use, I hate the thought of committing to a particular platform to then find it's not suitable. Also imagine when vr and augmented reality allow us to simulate all of this.

[@nufosmatic]

14:00 Kuel. A few years ago I ported an Analog transceiver FMC from an Analog Zynq prototyping board to a compact embedded Zynq board, modifying just the blocks in the FPGA code to accommodate the different architecture. The goal was to build a compact programmable receiver for a direction-finding system on a small UAV. Choosing Analog as a vendor is never the wrong choice...

[@paristo]

This is very interesting. These are golden for hobbyists and amateurs to create something new. I can already think purpose like detecting a rodents or other harmful animals for farmers and have a systems to scare them off based to that.

[@wahswolf88]

Fantastic. Subscribed. I am in the sports simulation space and have been working for a little while with vision based ball tracking systems. I know very little about radar but I always wanted to see if I could build something to track short range ball flight. Looking forward to this series!

[@Parkhill57]

Very interested, thank you for series! I've enjoyed CW only radars for many years, but ready to move on in experiments.

[@Just_An_Idea_For_Consideration]

I have just run across this channel, and subscribed! An idea for a future project: Create a similar system that can do ground radar, to look several hundred feet into the ground, using an array of ground probes, to detect anomalies deep below the surface, such as water, or minerals, etc.

[@hellnawnaw]

Or sinkholes!

[@viktoreimar1240]

Holy crap yourube recomended part 3 of this series a hundred times i had to search for part 1 - it just seemed logical to see part 1 before part 2 or 3.

[@viktoreimar1240]

I just felt the frustration building up. "Oh god why are you recomendimg part3 before part 1" The series seemed interesting, it was just that i didnt want to watch the series in reversed order.

[@theelectricwalrus]

This is awesome. I'd love to see a focus on calibration and adc frontends, mixers, gain budgets

[@AerialWaviator]

Fascinating series. Love the idea of starting simple and building to more complex experiments using a common base of hardware. It was the reference to Phaser, or phase-array antenna that got my attention on seeing the reference to this video. Watched a couple of prior videos, and am subscribed, ready to follow along.

[@melkhoulyihp]

Great content Jon, Being a chip designer myself, I find it very informative to follow your videos I will be following this video series and will try to get the hardware as well

[@theoriginalpauly]

Fascinating subject! For a future video, I would be curious about a directional passive radar, but maybe I can figure it out from this series. Thanks!

[@rowanjones3476]

Nice work. I appreciate you applying your industry experience in explaining why you selected the components you did. Would not have thought to take an off the shelf SDR and modify the signal path! Can’t wait to see the rest of the series.

[@maverick9708]

Nice, my best friend works at analog devices too so maybe I should send him this, its a wonderful project!

[@fredrikhansson4326]

I went for mechanical degree and took some electrical and programming course but this is really what i want to do. I can go for mechatronics in my masters to work with this

[@bernard2735]

Wow - can’t wait to watch the series. Liked and subscribed 😊 Beamforming and clutter would be great to include.

[@jonkraft]

Thanks! Yeah, I'm kind of hoping people vote for those 2 also..... There's a lot to do and learn on both those topics.

[@tiernanmorgan]

i just finished a diy arduino sonar and felt smart and wanted to move into radar and now i feel dumb again trying to watch this lol. but what i do get is incredibly interesting.

[@edu0604]

Wow! So nice, so professional and so clear the way he explains. Well done!!!

[@bradlambert4140]

Fantastic work, Jon. The series is off to an auspicious start!

[@kurtttttttt]

glad you're back! looking forward to the rest of the series!

[@andrewmunro671]

Outstanding video Jon. I write a lot of software and am fascinated by the combined engineering and software problem that is RADAR. I've been playing around with Vayyar's Walabot dev kit and its pretty robust and powerful. Still, I'd love to see more of this tech in the hobbyist/maker world, so these videos are an amazing resource.

[@jamesbonds3232]

Very interesting video. I trying to understand the current cheap human tracking FMCW radar module made in china aka HLK-LD2450 etc. currently very popular in the home automation community until recently but can not make any sense into that modules of how do they work. Your video gives me a lot explanation on that matter. Thanks for a great video

[@gabec77geo]

I found this viewo looking for passive array (more like detector), but I found this series more complete and interesting. Indeed there's a lot of theory skipped (or referred, that's cool), yet - let's play and have fun

[@Rachelebanham]

Nice Jon - I work with a few drone radar companies. this came up in my feed. enjoying watching you building this from ground up.

[@zaikindenis1775]

Dear Jon. Thank you for the great videos. Could you clarify about TX_OUT1 and TX_OUT2? There is difference in the picture from this video and the CN0566 page about which TX is 1 and 2. In the code I can see that we use TX 2. I cannot see clear from which connector TX cable go out. It looks like TX 2 is that you use and it is farer from the PCB edge. Thank you very much!

[@jonkraft]

Yeah, that's a good question. We had a change from our initial prototype to the released version, and that has created some confusion. Would you mind re-asking this question on our official support forum: ez.analog.com/adieducation/university-program/ Putting that question on this forum provides a searchable repository for others with this same issue. Thanks!

[@dmytro.andreyev]

Thanks for the video. Most drones emit themselves quite well (video and telemetry). Accordingly, do you have plans for a passive radar(detector) with RC protocol identification?:)

[@nullptr472]

This looks quite interesting. I'm looking forward to your upcoming videos in the series

[@alexpetrov656]

Thank God I came across this video! Big respect to the author!

[@kingjamez80]

Awesome. If I can find a phaser I’ll be building this along with you. Can’t wait.

[@bt1578]

Fantastic content mate. Been waiting for something like this. Your facilitation style and content presentation is top notch. Keep it up!

[@maninthemiddleground2316]

0:22 amen to sign on top 🙏🏻 God Bless you and your family 👍🙏🏻🙏🏻

[@Flamenawer]

I had this claim time ago and said you I wanted this , Oh my GOD what a present

[@bob_mosavo]

Awesome! I can hardly wait for the rest of the series 😁 Thanks 👍

[@willernst8376]

So good as always, perhaps some SAR, though that may be outside of the scope of this series. Though just the SAR algorithms are fascinating. The best radar channel on youtube, thanks!

[@jonkraft]

Thanks! Yes, SAR is a great idea -- I'm going to add that to the poll. And its definitely something I want to learn and experiment with too.

[@jram261]

I work at a university with an opportunity to experiment in the Structural Collapse environment for now progressing to Wildland Fire, Search and Rescue, hazmat, etc. how do we get in touch maintaining contact information security?

[@j0hnny_R3db34rd]

CW works great over long range for communication. Can even bounce CW off of meteor trails in the ionosphere.

[@jarretta2656]

This is insane. I was literally trying to search this on dec 28. Could you look at anti-jamming?

[@algorithminc.8850]

Great channel. Will be fun to go through your other videos. Subscribed. Cheers ...

[@polbarrull]

This is the best series on youtube!!

[@live_free_or_perish]

We've come a long way since the phased array radar I was involved with 40 years ago. That radar consumed an enormous amount of high voltage power.

[@lohikarhu734]

Hi Jon, I worked with ADI folks in my Nokia work in ic definition (like ADP1650), and also provided support in my R&S "factory" AE position... Had nice dinner with Vincent Roche, and interviewed in 2004 with great guys (Larry DeVito) in Massachusetts... I'll subscribe, looks interesting... I worked on qualifying phased array antenna in time domain, while at Agilent, which kind of bugged all those "frequency domain guys" in Santa Rosa 😸

[@jonkraft]

Very interesting, I remember the ADP1650! That was a big deal when it launched. Thanks for reaching out.

[@lohikarhu734]

Jon: beside ADI, I of course worked with others...my favourite ic definition/development was LP5523... although not RF, maybe have a peek at it, see how I was thinking in 2007...I guess that's almost 17 years ago, that I started that project...the LP5521 was the predecessor part, I think it was the first device that could be called a "smart" LED driver, and kind-of "co-processor" since it executed its own tiny code, independent of the main cpu in the phone, and was capable of reacting to an external signal, and, part of the idea was generated by a conversation with an ADI AE, so, even in 2005, some ADI influence. Cheers, and great 2024¡

[@AnteUjcic]

awesome video always wanted to make my own little radar

[@JoeyBlogs007]

Looking forward to 3D radar visualisation as a project.

[@user-rs1fo2dd9b]

thank you sir for sharing your expertise and knowledge - what a treasure!!

[@DantalionNl]

Hi I work on the Low Frequency Array (LOFAR) at ASTRON and found this really interesting, looking forward to the video on LO stretching as well as how to generate FMCW chirps. Wondering if you have to account for dispersion at these distances when computing the distance from the time delay if the doppler shift (velocity delta) is large

[@jonkraft]

Very nice to meet you! You mean like range ambiguity? I've kept my distances and velocities small -- like 50m and

[@campbellmorrison8540]

Excellent thank you. I have no idea about radar so this will be a wonderful resource for my learning

[@GregoryCharvat]

Excellent tutorial Jon! Yes and yes to all of this. Can’t wait to show you what we’ve been working on recently. I’ll send you a message offline.

[@jonkraft]

Thank you Dr. Charvat! I'm humbled, and a bit embarrassed, that you watched my video. You've inspired me and 1000's of others. Thank you!

[@ArsenioDev]

Oh this is gonna be right up my alley, thanks for this!

[@jonkraft]

Great, I hope its useful!

[@gertjevanpoppel7270]

I love this stuff and the fiddling around with it 😀👍... Specially if it's all so explained in a good way. The sad thing is ( and i think many agree) that when i see the price of 2800 .... my hart skips a beat 😢.... I was hoping to see a video on how to build something similar but for absolutely nothing and by digging around in old electronics and find your parts.

[@douglasmontgomery6315]

Jon, thanks so much for your time and effort. Looking forward to all the videos

[@thomapapa4006]

Excellent video and information. Looking forward to the next video parts.

[@dannoringer]

Very interesting topic. I used to design this kind of electronic systems. wowzer, the size is so small, the electronics have shrunk down so MUCH, the frequencies have gone up so much. Are you using GaN IC's or Si? Very impressive. I'm looking forward to seeing the details of your approach.

[@jum5238]

The book as a band-pass filter for picking your friends. BRILLIANT! If they steal it, they're worth getting to know better. If they return it, meh.

[@CommentingPeople]

Interesting project! There are so many ways to pivot from this. I.e., I wonder what changes, if any, would need to be made to make it a ground penetrating radar (other than frequency).

[@zee-ut9vz]

"As of me and my house we serve the lord"... Always beautiful to know Christian creator. Very humble too!

[@lazerathhome]

This is very cool. I don't have the knowledge to build this stuff but I think this would be even cooler if it was converted to work in the field of Astrology. Making a radar system to track the planets by linking homemade systems around the world. Would cost a lot and you'd have to k ow how to make receiver's and antennas that can detect the signals. No idea how it would be done but all the stuff we can do with technology nowadays is amazing. The recent laser data transmission in space is also something very cool. Why do radar dishes turn so slowly? Wouldn't it be better to spin fast and get lots of updates? I don't know much about radar stuff but i always thought it was strange. But thats because of my lacko knowledge in this field of tech.

[@frequencywatchers]

Seriously Cool Stuff Man. Keep Learning, Keep Experimenting, LOVE IT !

[@piotrnod6489]

Dude, try to make motion tracker from alien series xD Great content, awesome vidjeo. Thanks for sharing your knowledge.

[@dfgaJK]

This looks like a very interesting series, I am looking forward to the rest of the videos. I wonder if it will be possible to make it small enough for mounting on a drone for Detect And Avoid (DAA) systems to help safely fly beyond visual line of sight.

[@spock81]

Probably never going to be small/light enough (or cheap enough) for anything but very large commercial UAVs. A much simpler system would be to use ADS-B in to passively receive manned aircraft locations. Much smaller and probably more reliable than trying to use active radar.

[@dfgaJK]

@@spock81 Yes ADS-B is a good option, but AFAIK it unfortunately isn't considered dependable enough to be suitable as the only method of detecting other airbourn vehicles.

[@_ifly]

very informative video. could you make some videos on Ti IWR1443 mmwave radar basics and signal processings like how we can generate the micro-Doppler signatures?

[@krj1979]

I am looking forward to seeing this series evolve. Great job!

[@BorderKeeper]

3 minutes in and I can't wait to watch this, one small note the cut-off for your mic albeit probably intended to lower background noise is a bit jarring the way it cuts all noise the moment you close your mouth, feels like the video stopped and is buffering rather than it being intended. I would make it less aggressive, maybe even removing it all-together as the noise when you are speaking does not sound so bad.

[@CharlesVanNoland]

"I'm really not a radar guy guys!" Haha, had me fooled! I'm excited to follow the series :D Could you try to improve audio fidelity for the next videos? It's a little quiet/fuzzy on this one. Cheers!

[@Stelios.Posantzis]

Happy new year! A very exciting project - a great start to 2024!

[@suncrafterspielt9479]

so excited for this series, thanks a lot

[@TehMagilla]

100% into this. Subscribed. Can the beamforming RX section be used without the TX to locate RF signals? That would be REALLY useful to me.

[@jonkraft]

Yes, absolutely. There's some videos on wiki.analog.com/phaser that will demonstrate tracking an RF signal -- but only in one dimension (i.e. left or right, it can't also do up and down).