Messing With HRPT Satellite Signals

Рет қаралды 63,619

10 ай бұрын

In addition to the VHF signals I've looked at before, many weather satellites also use something called HRPT (High Resolution Picture Transmission) on a microwave frequency. This is a little more challenging to detect, and requires tracking low orbit satellites as they pass by.
After a LOT of struggling and failures, I was finally able to record and decode some of these higher-res satellite images. Ironically, the antenna feed that worked best was something made from coathangers and putty!
I may try to follow up on this in a future video, since there are many more satellites that use this system, not just NOAA 19 which I used here.
Some possibly-helpful links:
Satellite pass calculator: www.n2yo.com/
Nano VNA V2: www.ebay.com/itm/353177205291
Calibrating and using the VNA: • NanoVNA V2 Calibration...
Mini QFH Antenna kit (kinda sucks): www.ebay.com/itm/384774467100
Mini QFH antenna info: www.dd1us.de/Downloads/QFH-An...
QFH Antenna calculator: www.jcoppens.com/ant/qfh/calc...
Ground Plane antenna design (worked better!): m0ukd.com/calculators/quarter...
Satdump software: github.com/SatDump/SatDump
SDR++ Software: www.sdrpp.org/
Possible source for folding satellite dish: sub-lunar.com/products
The following affiliate links give me a commission if you buy from them!
RTL-SDR Blog V3 Software Defined Radio: www.amazon.com/dp/B0BMKB3L47?...
SAWbird+GOES LNA: www.amazon.com/dp/B07K1M39H4?...
Saveitforparts t-shirts and other merch at saveitforparts.myspreadshop.com/
Join this channel to get access to perks:
/ @saveitforparts
Or support me via Patreon at / saveitforparts

Пікірлер: 333

@sn0opyKS 10 ай бұрын

Fun fact: you can see how long this project took by looking at the "Ride the Sandland Monorail" t-shirt. It goes from black with pristine print to washed out and broken apart print

@saveitforparts 10 ай бұрын

I actually have two of those shirts, the one from Teespring started falling apart, while the one from Spreadshirt is holding up better :-)

@HansWeberHimself 5 ай бұрын

@@saveitforparts 😂

@pedrodepacas-ic1cb 3 ай бұрын

Hahahaha I have two of the same Cheech and Chong shirt, one that has lasted, and one that's all washed out and faded!! And I save everything for parts (although it's pretty much all 90's Toyota stuff)!!

@warobinson 10 ай бұрын

Been watching for about 6 months now.. Always love your topics! Hope you’re doing well! You deserve it!

@grashoper107 10 ай бұрын

Absolutely LOVE your videos pal.. It is rare to see people spend to much time on what 'didn't' work. I think you have amazing content! Thank you for sharing with us.

@igorschmidlapp6987 9 ай бұрын

No experiment is ever a failure. You just eliminate another method that didn't work...

@michaelalex5235 6 ай бұрын

I applaud your ability to optimistically persevere when nothing seems to work at first - that's the best way to learn.

@innercityprepper 10 ай бұрын

RTL-SDR has a v4 out now that supposedly is awesome and generates a lot less heat. Can't wait to try one!

@ericgulseth74 10 ай бұрын

And cheaper! Also some improvement with HF. I can't remember off the top of my head. Down side I guess is its using a discontinued chip and it will be a limited run supposedly.

@illegalcoding 10 ай бұрын

The improvement was that there is now an built-in downconverter, rather than having to use direct sampling IIRC@@ericgulseth74

@catsdontboot8735 9 ай бұрын

@@ericgulseth74 Also it uses a different driver, which for me was a hassle to set up on Arch Linux.

@mgoddard23 5 ай бұрын

@@catsdontboot8735 what issues did you run into? I got a v4 a couple of weeks ago and just installed the AUR package for the new driver and it worked fine

@Errant_EE 10 ай бұрын

A big help when antenna testing HRPT is to use the GOES HRIT downlink at 1694MHz as a received signal strength reference. It's close enough in frequency and always there!

@PhonePhreak3z 10 ай бұрын

Your honesty and openness about you learning as you go is what I love about this channel 😊

@bcadventure2015 10 ай бұрын

You have reignited my love for HAM radio these last few months. I’m nowhere near your level but enjoy tinkering around. Back in 2010 I was using a CB radio and somehow managed to skip trace from Vancouver BC Canada to Louisiana. My passion for radios took off at that point. Love your channel, never stop being authentic. It’s refreshing!

@alexjh47 10 ай бұрын

Get your license if you don't have one already! There's a ton of people out there talking on the sats. I've made contacts with people from Alaska to Arizona here in Vancouver through the ISS.

@BobHolowenko 10 ай бұрын

The North Van, Surrey, Langley and Delta clubs run courses regularly. Join your nearest club!!

@chrismofer 10 ай бұрын

Years ago I made a coat hangar-wire crossed dipole for receiving NOAA signals using a cheap RTL SDR. since then I became a HAM, acquired a hackRF unit and a couple nanoVNAs, plus a few amps and filters. I'm not very well educated in RF and have been trial-and-erroring everything, most of my projects being 2.4 or 5.8 for RC modelling purposes. But satellites are just cool. I have an old 'Dish' network dish with a high power ALFA wifi adapter and patch antenna that can see and connect to networks a mile away. It would be fun to point it skyward, but it is small for the frequencies used by SSTV and the like. Your channel is always an inspiration!

@DougPeabody 10 ай бұрын

I believe NASA has used a few zip ties and some duct tape in some of their projects. You're in good company. Great video.

@cstew8355 10 ай бұрын

👍 and 2mm think Tin foil that could withstand tremendous speeds.. those NASA guys really make me proud to be a liar

@KlodFather 10 ай бұрын

@@cstew8355 - You are not a liar LOL But my pants are on fire... someone pulled my finger while they had a lit cigarette. 😱😂🤣💣

@g4lmn-ron401 10 ай бұрын

I have been building QFH antennas for 70cms ham band and they were a challenge, pain in the butt, to adjust and tune, so going to 1.7 Ghz will only make that worse. Some times the simple approach is better, 1/4 ground plane! But you video proved my motto, "Don't be afraid to try it."

@kittl29fujam1 10 ай бұрын

Can't wait for your future uploads. Really curious on your antenna mover / rotor design.

@miahsbrokengarage 10 ай бұрын

Thanks for showing your "failures". Without mistakes, you cannot learn, and its clear you learned some things while making mistakes here. Good job! I learned a few things from watching your attempts as well.

@huntermclaren322 10 ай бұрын

You might consider this incremental progress, but the entertainment and education was a rousing success! Keep going, we love it

@ayitsyaboi 10 ай бұрын

You're slowly inspiring me to get into a hobby that I absolutely do not need to get into. My workspace is bad enough as it is.

@gardenfork 10 ай бұрын

If you don’t fail you don’t learn 😀 great vid.

@n8thegr8 5 ай бұрын

Found your content after trying (and failing) at the same stuff. Glad to see I'm not the only one struggling. Thanks for the tips!

@designer.346 9 ай бұрын

I love your channel man even though English isn’t my native language I can understand you clearly, you’re inspiring me and I think I found a new hobby, I gotta mess around with it. Greetings from the Dominican Republic 🇩🇴 🌴

@Rebar77_real 10 ай бұрын

A small enough dish to mount to a rail cart! :D

@chazmertes 10 ай бұрын

I am so excited to see what you do with the efforts on satellite tracking hardware! I can only imagine what your brain will focus on when you have the freedom from physical limitations! :D

@ricardobornman1698 10 ай бұрын

Learn by doing. Best teacher ever.

@adomjan 10 ай бұрын

Thanks for your picture, always a pleasure. Was funny to do some "forensic" to find your place on Google Earth :-)

@PotatoPete311 10 ай бұрын

It is awesome to see your videos doing so well!!! Being recomended allongside a lot of popular youtubers! 😊

@saveitforparts 10 ай бұрын

Very cool!

@sski 10 ай бұрын

Eggssscellent. Persistence is the key to progress, indeed. That's why I like this channel. Good work!

@swarnimdeveloper 10 ай бұрын

Saw your channel just last week.. Really Love watching your videos. The best part is you share your failed attempts aswell which helps us to learn more. Keep making such videos even if video duration exceeds an hour. Thanks for sharing such informative content ! Definitely learned a lot from it..💙

@dellman191 10 ай бұрын

Love your antenna videos and that you post your successes and failures. Really helps learn

@neuralmodulator 10 ай бұрын

That's amazing that you finally got the image. Love seeing the process and the progress!

@Thehotglueguy 10 ай бұрын

i always get exited when you post a video. love the content

@kekons23 6 ай бұрын

never stop making videos, i get super inspired from them... thank you

@patchvonbraun 10 ай бұрын

Others who have had success with small antennas and HRPT have used a regular (NOT QFH) helical feed with a reflector plate. They are easy to make from "random parts". The circumference of the helix is about 1 wavelength, with a roughly 0.2 wavelength spacing between the windings. The more windings, the higher the gain. You want to tune the gain of the feed to properly match your dish. For a high F/D dish (like an offset type), you'll want probably 5-6 windings, whereas for a prime-focus dish in the 0.35-0.42 F/D range, you'll probably want about 3-4 windings.

@Buzzygirl63 10 ай бұрын

You have more patience than I do, but this is really motivational as well. Thanks for sharing the trials as well as the successes... this is the true spirit of amateur radio!

@GrantRobertsonPlus 8 ай бұрын

Best channel find in ages! I love the parts bin ethos, and I envy your ability to manage more complicated projects.

@takochiba9151 10 ай бұрын

love your channel and recommend to all my buddies. most of my friends are programmers and struggle with the practical aspect of what you do. there is a lot of genuine fascination with these topics

@mxcollin95 10 ай бұрын

Love your videos, honesty and tenacity! Good video man! 👍

@paintore 10 ай бұрын

We love the learning process of you tinkering with parts, especially satellites/radio.

@afro4055 10 ай бұрын

these sat videos are amazing, dont feel like you need to be an expert this is great learning experience for everyone, thank you so so much for these

@rosso4122 10 ай бұрын

nice video, as always, excited for those teased projects at the end!

@tech_hoarder 10 ай бұрын

Great video! thanks for sticking with it and showing us the progress along the way!

@bigdog8008 10 ай бұрын

We used to use 12m tracking antennas for commanding the old TIROS birds plus a few others that shall not be named. Had a quick change from one satellite to another so had to quickly swing the dish clear over. Both of the stop sensors were broken so the dish kept going. Incredible how much noise a 40ft dish makes as it crashes through the stops. Old Microdyne receivers used to be about $20K each and weighed about 20Kg but had pretty limited baseband compared to today. Also used to design telemetry frame synchronizers. Early ones were huge (VME cards) and had a max receive bit rate of 5Mbps. Current generation is about the size of a dollar bill (PCIe card) and is rated for 200Mbps but can go much faster. Xilinx software said it would hold on at 400Mbps but never have seen how fast it really can go. Seldom to see a data stream up above 100Mbps but there are a few up there. Back in those olden days - satellite telemetry design used to be "fun". Now it's all cookie cutter stuff.

@saveitforparts 10 ай бұрын

Interesting stuff! I only understood some of that, but it sounds really cool. This is why I keep trying to learn more about satellite and comm stuff, there's so much interesting info and equipment out there!

@MD-eb6iu 10 ай бұрын

Loving your content and quiet enthusiasm.

@MaxUgly 10 ай бұрын

All that data at the end makes it all worth it, you are getting so close, man. I am rooting for you!

@paperswan 9 ай бұрын

Even though i'm not into satellites i just love your style man, never change!

@mikerhodes9198 10 ай бұрын

Well done. Thanks for sharing your trials. We are always learning.

@Liammcgowan 10 ай бұрын

here is an interesting experiment required: 275mm glass coke bottle foxconn copper heatsink (detachable fins) micro filament wire sharp kitchen scissors construction: take the fins from the heatsink and using the scissors cut them into strips approx 6 - 8mm each. (they will spiral wonderfully) wrap the micro filament around the outside of the lower part of the bottle. place the copper spirals inside the bottle. aero acoustic resonance takes place probably am/fm.. didnt have an sdr at the time when i did it, but run a microphone through spectrum lab. could also make interesting balun / improvised feed horn. a couple of other things... ruckus wireless access point has interesting internals.. and have you considered a couple of counter rotating discone spaced apart by the width of a geostationary satellite for your microwave scan? cool channel, keep it going 🙂

@willaforevar 10 ай бұрын

I appreciate your video too. Your way of doing things until they work without giving up Is quite a thing I would clap for.

@migalito1955 5 ай бұрын

Yep, the Nano VNA is a great tool. I bought one in early November & its still in the box needing calibrated. I am looking forward to using it, especially the feature that plots onto the Smith Chart which is actually just the Extended Complex Plane or Riemann Sphere where knowing that takes the mystery out of the chart. I also bought a new RS 918 about the same time. The new rig stayed in the box for 6 weeks too because I have conceivably too many projects. Eventually firing up the rig showed it came with a broken mic. At least the new mic arrived today and now, crossed fingers, the RS 918 is up and running for good. By the way it is a fabulous receiver, better than my old Kenwood or even my RSP-1A. Its terribly cold here in the Catskills such as 13 degrees for a high, but this spring I want to take the old satellite dish I found along the road and my RSP-1A along with the fitting LNA and then give satellites a go prior to stepping deeper in the rabbit hole of all things related to radio astronomy. I certainly appreciate your videos and they are both informative & entertaining.so, good luck in all things salvaged and 73 from de kc2wvb.

@cbhlde 10 ай бұрын

Uh, a new video - I already binged the rest, so thanks for making me happy today! ;)

@InfectedSquid 10 ай бұрын

I love your videos! They inspire me to get myself into stuff like that.

@M0YKSHamRadio 9 ай бұрын

Great result and worth the effort. Really enjoyed watching your progress well done keep it up.

@TheSealinBlack 10 ай бұрын

Cant wait to see what the future projects are, even if they fail

@gogglesfpv7986 10 ай бұрын

woah! dude I learn something new literally almost every video you drop. you have a seriously cool set of skills. about thing the only thing i can do close to this level is build fpv quad copters lol. but...data from space....waaayyy cooler than any quadcopter. this is mind blowingly amazing. thank you for you time and effort and energy to put out these videos. i learn a lot from you. keep it up man!

@wallydisc 10 ай бұрын

Dude. So great. Well done. Again. Thanks for all the effort.

@fredericfogg8784 10 ай бұрын

Thank you for your time and effort. You do really cool stuff!!!

@___aZa___ 10 ай бұрын

Great Video. You bring an Energy into your videos, that is rarely found on the internet! :)

@moormoor4281 10 ай бұрын

Love all your work and time you put in too the hobby's

@koningbolo4700 10 ай бұрын

At least only one tree got hit during the making of this video...that is a win I would say...

@tom23rd 10 ай бұрын

Hey dude, i am experiencing fail after fail trying to get goes east. I am happy to see how "not easy" this is and now i am inspired to keep going. So thanks!

@2012TheAndromeda 10 ай бұрын

This was very fun and informative! Thanks for sharing!!!

@mnowell3187 9 ай бұрын

Don't comment or watch youtube vids much on people doing stuff, but enjoy watch your vids! keep up the great work! I enjoy the honesty about the shopping list, not a fan when people ask me that question about what do i use.

@simonabunker 10 ай бұрын

This is a great story of persistence!

@BShocked 10 ай бұрын

I really enjoy seeing the process of learning these new topics! A vertical antenna like that has a radiation pattern like a doughnut with a very large null in the direction it is pointing. You may get better reception by rotating the element.

@TooMuchMiddle 10 ай бұрын

Really enjoying your videos. I appreciate that you don't try to sanitize everything. People need to fail to learn.

@TheChefmike66 10 ай бұрын

Very very cool and inspiring content, friend! I love it!!

@lumotroph 10 ай бұрын

Amazing! Great work. Inspiring

@311engineering 9 ай бұрын

Love the folding antenna, it’s awesome. Need to find one myself. Cheers

@PapasDino 10 ай бұрын

Everything is hard until you figure out how to do it! 73 - Dino KLØS

@hacktheory1337 10 ай бұрын

Love these videos brother. Keep it up!

@TheDiamondsDad 10 ай бұрын

Really digging your videos dude! In the last few seconds of the video I realized I could see my house in that image, it's the one just a little south of Lake Erie among the noise band in Ohio!

@HolyCannolis 10 ай бұрын

Appreciate the perseverance! I have almost no idea what you’re ever talking about…but always enjoy the process from the crazy guy with all the satellite dishes in his yard, who lives across from the cemetery, and sports a SPAM bumper sticker. 😊

@bigbongtheory4222 10 ай бұрын

Great Video as Always!

@sarkybugger5009 10 ай бұрын

I love your enthusiasm, and desire to succeed, despite the numerous setbacks. Well done. Time to polish up on your welding skills, ready for phase two of your ground station. 😂

@michaellichter4091 10 ай бұрын

Thank you for showing us some ways that don't work. As Thomas Edison said, 'I have not failed. I've just found 10,000 ways that won't work.' In the end, it did work, the high frequencies are a challenge.

@soulrobotics 10 ай бұрын

love the whole video. that is a nice way to learn. hey let's build a tracker for that antenna!!!

@ericks1979 10 ай бұрын

Great job. I always find the meteor satellites the easiest ones to follow, metop is the hardest.

@daveys 10 ай бұрын

Very interesting. Some useful learning points!

@garbleduser 10 ай бұрын

I love your work!

@CHV7238 10 ай бұрын

Amazing, keep the good work!

@Cameron_the_Robot 10 ай бұрын

Such a lovely Wifi Antenna you made there!

@W6IWN_Radio 10 ай бұрын

Another great experiment! 👍 👍

@capedatanetworksza5913 10 ай бұрын

that 30dbi wireless dishes are great..we use them as links between towers +- 40 km

@mikeomaly 10 ай бұрын

I saw the star link satellites fly over my house/town the other night. They were lit up blue, in a line about 20 of them, and they went by pretty quick!

@saveitforparts 10 ай бұрын

I've only seen those once, I always forget to look when they do a new batch. Very fun to see!

@toms.3977 9 ай бұрын

Back in the 80's, I used to download WEFAX pictures using a shortwave radio, a Radio Shack Color computer 2 (Coco2) computer, and a piece of software off of CompuServe's BBS server, and a homemade multi band wire antenna. What an adventure. Late one night, i downloaded a weather fax pic from Rome, Italy. It had some noise in it but was quite clear. I had a lot of fun with that.

@moormoor4281 10 ай бұрын

Fantastic learning curve fantastic effort fantastic job from London England UK

@LunaWuna 10 ай бұрын

I really love that dish. I wish i had one :(

@mikeselectricstuff 10 ай бұрын

I wouldn't think it would be too hard to make low-power test transmitter that has harmonics at 1.6GHz, which you could use to align the antenna to the dish and compare different antennas in a static environment.

@IrritablePunk 10 ай бұрын

Yay another satellite episode!

@SteveWrightNZ 10 ай бұрын

The slot or patch antennas are pretty gutsy

@vargtheoak4200 10 ай бұрын

Never disappointed!

@ruhnet 10 ай бұрын

Fantastic video!!

@rkirke1 10 ай бұрын

Glad you managed to get a signal at the end! (even if you hadn't it'd still have persuaded me to finally order a NanoVNA!). For the AZ/EL project, two "scrap" options come to mind; treadmills with adjustable incline have a chunky motor & acme screw mechanism in them. Also, electronic power steering from cars (I worked on Mazda 2s around 2010 in Australia that used it, but many other cars do). In the ones I worked on it was a big 12V DC brushed motor driving a pinion gear on the steering rack - essentially a high torque linear actuator (with ball joints on the end, perfect to attach to a dish).

@saveitforparts 10 ай бұрын

Ooh, good ideas on the motors! I did just order a sketchy solar panel az/el mount from China, so we'll see if that's usable when it shows up in 3 months 😂

@t0nito 10 ай бұрын

I just got into HRPT, I use a 65cm offset dish with a DIY 5.5 turn LHCP helical antenna and a Sawbird+ Goes LNA and I'm having surprisingly good results! I also made a mount to hold my phone at the correct angle do I can load Look4Sat which makes hand tracking much easier!

@moormoor4281 10 ай бұрын

All my love

@m1geo 10 ай бұрын

Your vertical element is wrongly orientated at the dishes focal point. You have the monopole pointing toward the dish. However the signal will be hitting the element end on, where the ground plane has least gain. Rotate the antenna at the feed point so the connector pokes out of a side, ideally parallel to the satellite track, and I think you'll get a better signal. A dipole may be a better choice. I've also seen people remove the SAW filter from active GPS antennas. Good luck! Watching with interest. 73, M1GEO.

@Arma77743 10 ай бұрын

Nice umbrella!

@600raficrow 10 ай бұрын

very nicely done ..

@RetroRefreshments 10 ай бұрын

AWH YEAH ANOTHER SAVE IT FOR PARTS VID BOINGOINGOING

@thomasvnl 10 ай бұрын

No, we appreciate you for the content! See you next time

@Soggytiri 10 ай бұрын

Great video!

@quadcam24v 10 ай бұрын

SDR's can be such a headache when they mess you around. The antenna rotator would be a great project, anything to make your life easier while operating is great! I feel ya on the shed clutter, it's damn hard to stop it getting out of control.