How To Receive And Decode L-Band Weather Satellites

[@box6225]

the bot comments are CRAZY (i cant wait to see this video ive had a MASSIVE old radio antenna outside my house ive been wanting to do something with)

[@personzorz]

Oh they are gonna get SO much worse

[@shemmo]

what bots? i am not seeing any

[@lilben869]

Oh hell yea. A video on the automatic tracking would be awesome.

[@J.Bliszko]

Absolutely invested in the development of your channel over the last year. Keep the great work going dude!

[@fredWaxBeans11111]

When I played with this a few years ago (downloaded Meteor M2 images), all I used was a small "August DTA240" hdtv antenna with TV "rabbit ears" connected to it. I did not move the antenna(s) to track the satellite, it just sat there stationary. I also was receiving the signal indoors lol. Lots of errors in the image, but it was mostly "proof-of-concept", just to see if I could get an image. I did!! I was actually surprised it worked as well as it did. But the images that Gabe received are just stunning. COOL BEANS!!

[@TDnN_Noks]

I feel like a collab between you and "Technology Connections" would be a hit, been watching a while love the content.

[@reeflab2221]

This needs to be the pinned comment

[@AlphaTheta.]

And the signal path

[@Adurite]

I can totally see the fascination with satellites. In an unexperienced person's eyes, it looks like literal magic, being able to send/receive images from seemingly nothing.

[@johnbell3621]

We’ve always associated radio with sound, not pictures. So the idea of getting images through a radio would seem like magic. But images through radio is nothing new, amateur radio have been using SSTV (sending images) for ages.

[@videogames8261]

are you real?

[@Flylikea]

Same

[@improvisedchaos8904]

I was talkin' to one of the homies in old school runescape and he mentioned you. Told him I was already a fan. Love your stuff dude

[@mrleeal]

this is your best satellite explainer video yet. thank you for the key information.

[@nickgerner2920]

I'm putting together a list of projects for new members in my radio club. Stuff like this is exactly the kind of thing I'm looking for. Thanks for the video!

[@koningbolo4700]

10:20 Amazing Stroopwafels... greetings from the Netherlands...

[@HBvD]

Haha ik had het zelfde 😂

[@excitedatom1403]

11:00 thank you so much for quickly explaining the adapters as well. It's these little details that help a lot! Great video, thank you :)

[@wavemaker54]

Like the umbrella idea for a rainy day, with a bunch of bright daylight LED strips to make your little area a sunny day. A portable power brick would be ideal. I like the idea of collecting my own satellite imagery, sounds like a great project. I’m happy I stumbled upon your channel, just subscribed.

[@tfairfield42]

My buddy brought me over an old Dish satellite dish, one of the more oval shaped common style. Gonna solder up the little feed with the 3d print support structure you had in one video.

[@Allan_aka_RocKITEman]

@saveitforparts >>> Great video...👍 That USA-only military satellite sounds interesting.

[@budgetmerch]

Interesting stuff - I didn't realise that this is so readily available with minimal equipment. I do use an SDR for repairing vintage radios but I don't have any sort of dish for this satellite stuff. Would be interesting to explore, though.

[@prillewitz]

Those are Amazing Stroopwafels! I will have to receive some satellites the coming month. Your enthusiasm is catching!

[@walkercustoms]

Excellent explaining of everything. Thank you.

[@ratmadness4858]

you keep making GOES 16 look like the easy choice! I hope to have my rig working before hurricane season. It's a hobby to track them.

[@saveitforparts]

I use it as my baseline a lot, for testing and aligning antennas. I've manage to pick it up with some pretty marginal gear, although I'm not always able to decode good images with the flaky antennas!

[@ratmadness4858]

@@saveitforparts my brother in law gave me an 8 foot dish in 2008. finally have a use for it!

[@michaelterrell]

NOAA was using 100 foot dishes when we built the turnkey system for Wallops Island. Encryption uses more power aboard a satellite, so it doesn't make sense.

[@chadwi4648]

11:08 1000% for your cable modem at home or any catv connection as well.... keep that braiding out of the way as well... need em clean and level and tight.

[@CarlJorge-h4h]

Been watching your channel now for sometime and decided to subscribe! You put stuff together and hopefully inspire young people to continue the quest to explore electronics and physics!

[@neilfoster814]

Another great video Gabe! I've been getting some pretty good results from the 137Mhz NOAA 15, 18 and 19 sats using a modified V dipole antenna, RTL SDR V3 dongle, SDR ++ and WXtoIMG. I've never had ANYTHING from Meteor M2-3 though. I'm dying to have a go at getting HRPT images, so your videos are proving really useful and inspirational. Greets from the UK.

[@RetinaBurner]

The geekery here is 11/10. Nice work, Gabe. I wonder if a larger diameter shallow mesh dish would be something that you could build. I know it would take a lot more to keep stable, and to aim, but I'm betting you'd get a much cleaner signal. I suggest a mesh to keep the weight down, and also to give a clean reflecting surface. I suppose it just needs to be dense enough so as to reflect signals properly. I'll bet there's a tool out there that will permit calculating mesh density for a given signal spectrum, etc. Just a thought that I think would be cool, but probably a bit spendy and cumbersome. Maybe a larger motorized mount for it? Have fun! :)

[@crazycarl00]

Dude this is an amazing video. Thank you so much for putting this together.

[@LuMaxQFPV]

It's very important to have a pigtail adapter on that/those usb devices. They have tremendous leverage if just plugged straight into a phone or laptop. One tug, or trip on a cable, or antenna blows over, and you're looking at a relatively expensive amount of damage to the USB jack.. Spend the extra few bucks for a short dongle/pigtail. I always have extras for my non tech friends who struggle with stuff like this... I hand them one, and they instantly get it.

[@AndrewBeals]

Good call! Sellers call them a "USB C Extension Cable" on *m*z*n's marketplace. I see 0.6' (8"/18mm) ones and a few 4" ones. This includes a OTG+charging port which comes out as a C female (10W) and an A OTG port. Handy.

[@heatedpoolandbar]

Good stuff. This is a nice introductory video that I can share when telling my friends about your channel.

[@pendulum4734]

For your antenna scafolding, move your bottom and middle support braces up to equally split the distance (height wise) on the calculator. I had the same problem with mine. They were 30 turn antennas.

[@johnbecker8768]

This is pretty cool Gabe. I didn't even know this was a thing. Thank you!

[@ocsrc]

I still can't believe how much different the live satellite cameras are than these public cameras. I mean the first time I saw the live cameras on every satellite my mouth dropped open. We were told never to look at these cameras, so every time I worked alone, like on Christmas, I watched them, and they were just mind-blowing. So detailed. So clear. Like looking at Google Earth in real time. I really miss that job I saw so many cool feeds

[@tommojphillips]

why they tell you not to look at them??

[@zerodoinkthirty0]

Great vids lately, really enjoy the detailed longer format! 👍👽

[@xXZookeeper11]

Hey man, I love these videos. In another video you said you went to graduate school to study GIS, I’d be very interested to hear your perspective on the GIS sector, if you work in GIS now or what. Only if that’s something you want to share of course! Thanks again for making these videos

[@saveitforparts]

I haven't directly worked there for a few years. When I graduated the only people using it were government agencies and real estate. I couldn't find a government opening so I drifted into real estate and kind of ended up there. ESRI tried to hire me but I hate Los Angeles and remote work wasn't as much of a thing yet. There are probably a lot more options nowadays but I'm a little out of date on modern GIS topics. I still use it occasionally and I have some video ideas involving GIS, but no time to do them :-D

[@Mosfet510]

Thanks for the sdr++ info, I just installed it and it looks pretty feature packed! 👍

[@skoovee]

the fact that people are shocked that weather sattilite data is free says alot about how we have been conditioned to think about the world

[@dean5263]

Thanks Gabe, excellent video, it turned out to be very informative.

[@TheLastWolfBane]

I ment to send this last video I mean, i wasn't looking for a direct answer for the LNA I just wanted to know if something like that would even work or if it would destroy the diodes on my rtl-sdr v3. And thank you for making me realize I haven't updated sdr++ in 4 months😢.

[@MPLS_Andy]

This is awesome. A complete guide for dummies like me.

[@alzeNL]

very cool, i like your approach on the gain question.

[@dorvinion]

For the printed scaffolds, thinking that if were broken into five parts it would work better. Print the legs flat and the two rings with holes in them to index the legs you may have better results Some assembly required at the end but figure you'll get a better print

[@daveys]

Excellent video Gabe, very interesting and comprehensive!

[@jcole6545]

Thanks for this video, it answers a lot of my questions about this.

[@Jango1989]

Thank you so much! I desperately want to try this myself and this is a really useful video.

[@remcodejonge9042]

Thank you for this great video. Not that I think you will need suggestions for a video, but if you has plans to revisit the cheap parabolic antenna subject. You may try to vacuüm form a antenna dish with mylar around a round mortar tub. Or other round sealed container. And a vacuum cleaner You may want to paint the mirroring surface though otherwise you will burn your receiver.

[@mumblety]

I have a couple old DirecTV dishes that I could use. I'll have to try this! Maybe I'll get a small array set up with them!

[@MrWompz]

As always, top notch content.

[@matthiasmertens2590]

Really appreciate these videos! Thanks!

[@trollenz]

Nice ! Lots of useful information here, thanks a lot 👌🏻

[@hony1717]

bro is doing so much content recently 👍

[@Elias211185]

Поздравляю с Победой!!!!! Как всегда, очень приятно смотреть, всё доходчиво, понятно и самое главное - актуально! Крепкого здоровья и совершения открытий в науке! 👍🔥💯

[@mlechnyj_put]

Подскажите, а что за программа на телефоне у автора видео?

[@agfamatic91]

i´m fairly new to SDR radio but what i have started doing to keep the centre pin from moving around when soldering SMA connectors is to first solder the signal wire to the centre pin and then putting a drop of super glue on the base of the pin before assembling the connector and soldering the screen to the connector body.

[@bernymozar2195]

Hey, keep going you have the right to receive the signal like radio receiver, so you're fine. I like satellites to .

[@Badg0r]

Great video. I need the amplifier/ filter and a dish. I already have the V3

[@papafrank7094]

I wonder if an umbrella, covered in fiberglass and resin, and then split into reassemblable segments would work. That way it can have a reflecting paint sprayed on it, can be stored and reassembled easily. For those that are fiberglass rich that is..

[@mattparker9726]

Also, this was a SUPER cool episode! Keep it up!

[@remiechange5482]

thanks : 18'20s : this is BPSK modulation. It could explain why the RX agc gain value has few effect: With numerical modulation you have a big threhold effect : if your are above this threshold the average gain dont improve reception . Bit 1 ou zero remains 1 or 0. ( basic explanaion ) If you see 4 points : this is QPSK modulation : better datarate but higher SNR needed.

[@Arotatinglie]

Your videos are awesome, man. 📡

[@LeeZhiWei8219]

Hey dude! This is so cool! Great video again man.

[@nolan412]

Shared one of your previous videos on this with the thought this would be fun eclipse day.

[@nolan412]

Final question: what's the reaction of Fl Earthers?

[@nolan412]

...this would be a fun subject for a booth at their conference.

[@nolan412]

A Styropyro laser would be fun too.

[@nolan412]

😂 Flearthers have found you.

[@processagent5095]

yes@@nolan412

[@danielradcliff7081]

Sma Cable and connectors are the RG 174 standard Try getting some cables and Connectors that use the standard. They are much better quality

[@eveningecho5334]

The physics would say that the parabolic dish will reflect all signals at the focus point of the. Parabolic dish, which is most likely at the horn, not sure your helix which isn’t at the focus is making the most of the parabolic reflection. Have you ever tried a double helix antenna, just two springs mounted side by side, one left wound, one right wound and point them at the sat? Curious if it gets more signal and would eliminate the amp

[@aarongriffin81]

His focal point hits the tin lid which is 1/4 wave behind the helical antenna.

[@mikeg8cpf985]

Short Backfire antennas work quite well at L band, and dont need pointing at the sat.

[@saveitforparts]

Interesting, I'll have to watch for those at the surplus store :-)

[@wemme]

Thanks for all the information. How likely Would a 50cm dish work?

[@mattparker9726]

I'm going to have to download this for study, might have to watch it 5x too. 🤣🤣 Smooth brain.

[@OfficialDaveChannel]

Thank you for moderating your comment section

[@saveitforparts]

I try to at least delete the spam bots and the flat Earth trolls!

[@martinkorinek5489]

@saveitforparts Can you please share HW info of that laptop used for decoding? I would like to get a better idea of what computing power is necessary. Thanks! BTW I love your satelite videos, it is such an inspiration of what can be done with such and ordinary HW.

[@saveitforparts]

I honestly don't remember, I'd have to look at it. It's someone's older one they sent me, probably at least 10 years old. You shouldn't need too much for basic satellite stuff, I've done some recording and processing with a Windows XP-era computer and it worked OK.

[@JH-jp9sv]

Solid video! Isn't it great to get data without the middlemen? Edit: I love that your feedhorn is a plastic funnel with 12ga and a cookie tin lid. Horses for courses.

[@sneugler]

Another super informative video, thanks! I notice that with your tracker setup, it's forced to rotate horizontally 180 degrees when it passes overhead. Would it be possible to just keep using the pitch motor to continuously track it without having to rotate, or does the mount have a mechanical limitation that prevents it?

[@saveitforparts]

The mount doesn't have a physical limit, although it does have a little slop in the internal gearing so it "flops" slightly when the center of gravity goes over the top. I'm using code written for TV antenna rotors, so this is just the way they programmed it. I'm currently struggling with updating some of the code for the thing so it can be a radio telescope, but I'm not actually much of a programmer myself so I'm not sure how easy it is to change that feature.

[@sephjfox]

love this channel 💚

[@DSB1234567890]

Have you tried the heavens-above app (available on Android)? It doesn't have the full "AR" view but it does have an aiming view that uses your phone's angle. I haven't had issues with it.

[@memejeff]

Great tutorial. I am trying to get into this stuff. I have an old dish from 2014. To be fair it is a large one (bit over 3 feet). So this is very helpful. I live in Norway so I doubt that I will be able to get GOES data unless I get a much bigger one. I hope that the European weather satellites also are L band satellite, then I could get data with the same method.

[@saveitforparts]

There are some interesting things you can get in Norway, a lot of low-earth-orbit satellites dump their full orbital data when they pass over Svalbard. I only see one that does L-band (according to www.satdump.org/Satellite-List/), and you'd have to aim the antenna somehow. www.youtube.com/@dereksgc has a lot of good info on that!

[@memejeff]

@@saveitforparts Thank you so much. Really appreciate it. Glad to know where to start :D

[@wussup331]

You can try to reduce the receiver noise figure by reducing the insertion loss before you're first lna. Agc may not give you much as shown because the noise figure of your lineup will be dominated by the loss/noise figure of your first component after the antenna. Sometimes changing from a SAW filter to a ceramic filter improves things because they have a lower insertion loss.

[@gorak9000]

That's why you put an LNA first before any filters. I would guess the sawbird has an LNA before the filter, but only if they designed it right

[@wussup331]

@@gorak9000 Downside of lna first is that you pass out of band noise to the lna which can saturate it depending on the noise environment.

[@sarkybugger5009]

If you're using an on-the-go adaptor, get one with a cable between the plug and the socket. Saves putting a strain on the connectors at both ends, and could save you an expensive repair. Ask me how I know this. ☹

[@Nom6969]

Would this be possible with an old DirectTV satellite dish I have laying around? I'd imagine I'd have to get a new LNB. I've also heard the rtl-sdr has trouble powering the LNB as well. If it is possible, what type of LNB would you recommend? Thanks for reading, I respect the work you put into your videos!

[@saveitforparts]

You'd need to swap the existing LNB for something tuned to 1.7ghz. I've been using little pcb antennas and 3D-printed helix antennas, depending if the signals are linear or circularly polarized. I should actually do a video on this with a little DirecTV dish, people keep asking about that! I'll put it on the to-do list.

[@Nom6969]

@saveitforparts Awesome, thanks so much for the quick response! I was also just able to get my first NOAA satellite pass successfully recorded yesterday!! All thanks goes to you!!

[@sock501]

Weird question: how long could you expect to keep receiving useful data from weather satellites and such like this with your kit, in the event of a disaster that takes out their ground stations?

[@copperthedergy]

very unpredictable, but the only thing that will take these sats out will be collisions and space rocks, i hope that by the time the apocalypse comes, theyll have figured out how to automate that...

[@residentmusician]

NOAA 15 is over 25 years old and still trucking

[@michaelterrell]

There are multiple control ponts for the NOAA system. What usually ends a satellite's ueful life iswhen it runs out of fuel for course corrections.

[@maxscott3349]

What I'm wondering is how you would track them without the help of these internet based services Maybe the timing and path through the sky are really consistent though, I don't know

[@michaelterrell]

@@maxscott3349 Their path is well known and maintained. Satellite terminals handle the tracing. What id more fun is tracking then on a ship in rough water. It has to both track, and compensated for the ship's shading and rolling. A friend of mine retired from the Merchant Marines as a radio operator in the '80s. Large cargo ships were installing first generation satellite communication.

[@-Mike]

I want to try an empty swimming pool (childs or even inground) coat it and have a moveable feedhorn, perhaps on cables. Something similar to The Arecibo Observatory. Would be an interesting project.

[@Lyoishi]

Would be awesome to see the eclipse from that perspective.

[@Chris-ch5nb]

So, any plans for an antenna mast/tower? Be pretty cool to have ham band antennas, lora, and a dish above the tree line. What about sticking one out at Sandland? (That’s the name, right?) Maybe set it up with backup power and remote administration and redundancy. You could make multiple video series about something like that! Appreciate the content and sharing the knowledge!

[@saveitforparts]

Sandland is getting the radome and radio telescope. I'm too lazy to put up a bit antenna at home right now, I don't even have space for a real ham shack!

[@michaellichter4091]

A very comprehensive and interesting video about my favorite topic, satellites. There were also some things in there that were new to me, better to use an umbrella than no satellite dish at all. Perhaps there will also be a video about amateur radio satellites, as there are several in orbit, and even the ISS now has an X-band repeater that receives on 145.990 MHz and retransmits it on 437.800 MHz. It seems that very few people know that receiving weather images and decoding them is completely legal. I look forward to every new video on the subject.

[@TSGEnt]

Great tutorial. Thank you.

[@banellone]

I see clear difference between lower and higher resolutions. But can you tell us, since you have those png images, what megapixels are we talking about. Thanks for video!

[@Steve_1492]

Love your content, how do you automate the NOAA Sat Dumps, that would be a great content to share.

[@saveitforparts]

I have it on my to-do list to do a video about the Raspberry-NOAA system I use. I keep meaning to update that and move the antenna to another spot.

[@x_CrossHair_x]

Wow great video once again (and for providing all those links) in the description. Saved Me tons of time not having to find it my self. (Did you ever try this Dish) On the GOES 16 Satellite. This way you Don't have the hastle of tracking it. Perhaps the result would be a clearer set of images. (Less Static) Thanks again 73s 📡👍

[@saveitforparts]

This dish is a little too small for the GOES satellite, I think I tried it in a previous video. I keep meaning to set up a bigger dish for that, but I'm lazy and haven't figured out exactly where to bolt it to the garage!

[@x_CrossHair_x]

@@saveitforparts To describe yourself as "Lazy" 👎 I Disagree . (With all these Videos) And a Book in the works.. When do you Sleep?? 🛌

[@Bunker278]

This is cool. I think I need to re-up my Ham ticket. 73s.

[@RobsNeighbor]

Love the channel Great job! Thank you

[@d.t.4523]

Thank you, keep working.

[@logos74]

Thank you for your videos. What android sdr app do you recommend?

[@saveitforparts]

I've been using SDR++ on Android, it's a little kludgy and hard to see without moving the side window around, but it works pretty well.

[@039dalekmoore2007]

Forgot got to mention as an idea i am about to try using a pair of free geared DC motor driveway car gate openers i am going to use instead of actuators on my 2m C band mesh dish they seem to be very strong and do the job easy once mounted

[@saveitforparts]

Cool! That sounds like a fun project.

[@039dalekmoore2007]

Yes i was lucky as they were free i was not expecting to be able to move the dish via any thing i would have placed my dish pole a little forward to move up down any direction than just the geo belt ...OH well ! keep up the good work on the satellite dishes and different feed ideas so helpful know what can work and what can't ! Your very inspirational on all this and very good at it ...

[@stevesweb]

I wonder which SDR device would be best for these satellites? I have several different types, but have only used the RTL-SDR for satellite reception. It seems kind of weak. Most of mine are $300USD or less. Im sure a $2,000 unit would be great! Lol

[@saveitforparts]

If you can get one with super high bandwidth that can see more of the radio spectrum, I've seen some interesting stuff done with those! There are a few satellite signals that need much more bandwidth than the cheap SDRs can handle.

[@ET_AYY_LMAO]

Could you make an adjustable circular polarized feed horn by having the coiled up spring actuated so you could compress and expand it with a stepper?

[@saveitforparts]

That's an interesting idea! I'm not sure if that would work, as I think both the diameter of the coil and the distance between turns is important.

[@ET_AYY_LMAO]

@@saveitforparts ah yes of course...

[@Robert-cd5zr]

Once downloaded, everything can be done offline (no internet, cell, wifi, etc)?

[@elkneto4334]

hey, great vid as always, i love your stuff, thanks for all your work. Do you get that alot that you look like youre the big brother of angus from makersmuse? :)

[@saveitforparts]

Haven't heard of him!

[@patchvonbraun]

SMA connectors were never really designed to be used for equipment that was going to be moved around a lot, or plugged and unplugged a lot. They were really designed for microwave (up to 18GHz) use inside equipment enclosures for connecting modules together and with lots of good strain relief and cable management. But their use has expanded into communities that may not appreciate their heritage nor their limitations.

[@michaelterrell]

The original SMA cables were rigid, or semi rigid coax that didn't alow the center conductor to move. We made all of our cables in house at Microdyne when I first started working there. A final step for SMA was a weight that was screwed onto it, to test the joint's strength. Naer the end, we were using a very tiny snap in connector on one product. They had to be ordered premade because the tooling was computerized and only leased.

[@saveitforparts]

Yeah it seems like EVERYTHING is SMA these days. Which is actually kind of nice, I remember when Wifi cards used MCX and SMB and even tinier BS that would break if you breathed on it. SMA is actually kind of refreshing, and I no longer need a box of proprietary pigtails for every gadget.

[@michaelterrell]

@@saveitforpartsWe used about ten different types of RF onnectors at Microdyne, and both 30 and 75 ohms coax so the RF benches had a lot of cables to test boards and subassemblies.

[@vovanikotin]

Look at passive radar methods (using radio/TV broadcasts to detect planes). Maybe you can do cool video about Thx

[@arthurcarchi4045]

The constellations your seeing in SatDump is probably a representation of the signal's modulation. Many satellites use what is called Phase-shift keying to modulate a digital signal. I don't know that much about it but here is the Wikipedia page for further reference: en.m.wikipedia.org/wiki/Phase-shift_keying

[@039dalekmoore2007]

I think You tube deleted my last comment because i mentioned some other platform which would be good for us all interested in this hobby commenting helping each other very annoying ! Any case if you do with a bit a bit luck and big brother AI does not pick this up i might be talking about some platform which would be much better than here to help others interested in chatting to each other .....i don't know i can but try ! But love the videos and the help experiments on the dishes feed horn antennas great work i will try your ideas here in Australia hope to show my work when i can do it .

[@LimestoneCoastCustoms]

I'm trying to pick up the Australian Himawari 8 & 9 weather satellites, but I'm struggling to receive anything. Apparently they transmit on 18.1 - 18.4ghz. I have managed to pick up a signal with a QFH antenna on 18.1 but it doesn't sound anything like what I was expecting. Unfortunately I bought the QFH antenna for this but it suits the NOAA satellites (137mhz), not Himawari 🙄Any suggestions would be great! (I am struggling to find what would be appropriate for the given frequencies)

[@saveitforparts]

I don't have much experience with that frequency range, maybe a Ka-band TV or internet dish would work? Antenna sizes and designs are usually somewhat specific for the frequency / band, so a VHF antenna for 137 won't get anything in the microwave frequency range.

[@kd9kck376]

Have you looked into setting up a Satnogs station? Its a very cool community.

[@saveitforparts]

I've heard about it and occasionally look through the website, but I'm honestly still a little confused about how it works. I'll have to see if someone has a simple how-to guide on the whole project.

[@Mrshoujo]

Back in the Mid 1980s, ANTIC Magazine plublished a project for Atari computer owners on how to receive & processs WeFAX data.

[@corsonforcas]

Could you make a short showing how the saw bird is connected to the antenna, like what's between it's port and the dish, please

[@saveitforparts]

I actually showed the build process for the helical feed here: kzbin.info/www/bejne/rH_SaX6gm9GVqsk

[@dennisolsson3119]

Encryption would also add a thick layer of potential problems if there is noise. Unencrypted is easier to get something from even on a bad signal. Even with error correction etc, those are just solutions to work around problems with encryption of non sensitive data. I am not saying it isn't solvable, but the technical house of cards would get unnecessary big. ... As far as I know. Correct me enough and I'll remove this comment :)

[@plop386]

i have a question you may answer mate. i'm a builder into FPV RC and i saw some amplifier like that one using 8.5G frequencie ( the one used in FPV ). but they are sold as emiter amp , does the one you use for a wider band is a special for recpetion, or are they the same and i can use it on a receiver ? i'm also a parts saver and like to mess around with stuff , i allready built a mini dish for emitter in RHCP , receiving in LHCP but never amplified :) i also wonder if it's send as a voltage, and can fry a receiver because of an amp cascade. because there are allready weak amp in FPV google PCB thanks if you answer ans sorry about the broken english !

[@saveitforparts]

That makes more sense than some of the English comments I get :-D I'm not actually sure if you can use the same type of amp for transmit as receive. A transmit amp will usually take more power input and have better heat protection / cooling fins, depending how much power you're putting into it.

[@plop386]

@@saveitforparts thanks for answering. may i email you about that project i have ? i got somes questions. not a lot but you seem to be wiser than me on the RF part :) my english is not that bad bad, but i know i make mistakes, i'm french :)