Вставка
- Опубліковано 3 жов 2024
- This is the next video of the bonus series where we want to build a ground station for the geostationary QO-1100 satellite and contact a station in Antarctica. I will not repeat the content of the previous video. Sot it is highly recommended to watch it first if not already done.
But first I have to thank you: I asked if I should continue with the series. And you responded: The video got four times the amount of comments than my other videos. And most were positive or even enthusiastic. So let’s continue with the Bonus series.
I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others.
My HAMradio channel: / @hb9bla
Links:
Adalm Pluto SDR Receiver: amzn.to/3fSQPxk
Pre-amplifier: s.click.aliexp...
20W amplifier: s.click.aliexp...
8W amplifier: s.click.aliexp... or amzn.to/2SKoBLv
Power Meter: s.click.aliexp... or amzn.to/35FNdtV or www.passion-ra...
SMA torque wrench: s.click.aliexp... or amzn.to/2zeEG5b
50W Attenuator (not tested): s.click.aliexp...
The links above usually are affiliate links which support the channel (no additional cost for you).
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com...
My Patreon Page: / andreasspiess
Discord: / discord
If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel
My Amazon.com shop: www.amazon.com...
For Banggood bit.ly/2jAQEf4
For AliExpress: bit.ly/2B0yTLL
For Amazon.de: amzn.to/2r0ZCYI
For Amazon UK: amzn.to/2mxBaJf
For ebay.com: ebay.to/2DuYXBp
www.facebook.c...
/ spiessa
www.instructab...
Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job
As an Amazon Associate, I earn from qualifying purchases
![[UA] NAVI проти G2 Esports | Blast Premier Fall Final](http://i.ytimg.com/vi/QWlIm4FGESQ/mqdefault.jpg)
Thanks for the great info, the explaination of the signal paths and the dangers of not connecting load/cables to the o/p's was a great touch :)
Glad it helped
This episode brings back so many many MANY memories.
In 2006 I was introduced to our company's satellite ground station. I don't remember all the specs we operated "new" I.P. MPLS across multiple birds. But we were using unused Ka / Ku bands and channels between 13 and 40 GHz. I honestly cannot remember what the broadcast power was. The teleport's 15 meter parabolic reflector dish had this huge fence around it with massive warning signs not to stand within 20 meters from any 90° position of its aimed direction, a bird in geosynchronous orbit at 36,000 km if memory serves. It required some power..
I just cannot remember!!
Btw, there is an excellent 2012 Antarctic Satellite white papers online for those that wish to read them.
I always knew that those satellites existed and saw the big antennas. I could not imagine taht I would be able to use one myself!
I have watched many of your videos over the last few years. I am on a binge watching session this weekend and want to tell you thank you. I also want to extend a thank you to your wife for allowing you to continue with these awesome journeys across a series of topics.
You are welcome! I will tell my wife ;-)
I still giggle *every* time I see that hand on a stick
But it is so useful - lot better than a finger and funnier then pointer :)
I love his orange transparent version too.
The orange is the original from the 90's
It's an overhead projector relic, isn't it?
Dear Sir, amazing 😘 amazing job, good thing that the XYL allowed the purchase of the second attenuator hehehe. Although perfect description
This was below the budget she controls ;-)
@@AndreasSpiess hehe long live the ebay and alliexpress... I guess a bird one would set you back several hundreds?
Again a clear and useful information from Switzerland !
TNX Vy much Andreas !
My pleasure!
Thanks for the continuation of the series Andreas. It's really instructive to see a process broken down scientifically, clearly, and methodically. Even though most of us are not planning to speak to Antarctica any time soon, the concepts and problems involved are all great to see here.
Thank you for your nice words. I try to include a little "general knowledge" in the videos.
THANK YOU for showing and using a torque wrench on your SMA connectors! On addition to the "real" metal kind you showed (that cost around $200 US new), there are some composite plastic ones selling for around 30 US that do a decent job. Observe minimum radius rules on microwave cables. Also, look for an HP 11693A Limiter to protect the front end of your spectrum analyzer; they show up on eBay every so often.
Mine is of metal and you find a link in the description. It is around 20 dollars. Maybe not accurate, though. I did not test.
"displacement can only be replaced with more displacement" 👍, good video as always, keep the series and other videos coming 👍
It's all at the pure cubic doll-hairs
That's the plan!
I have been building small 10GHz and 24GHz radars for about 17 years - not the RF part, but everything around it - and I still learned something from this video. Thank you so much for your great and clear explanations - looking very much forward to the next videos in this series.
Thank you! Next should follow tomorrow.
Thank you for posting a follow up to this. I'm learning a lot and still have a lot to learn :)
My pleasure!
Thank you for continuing the series, interesting as always.
My pleasure!
Bravo! Thank you Andreas for giving us such gift with your videos!! (popcorn popping while waiting for next!) Keep up with your GREAT job!!
My pleasure! Maybe already next Thursday evening...
i am icelandic live in denmark now and i love your videos
Thank you for your feedback!
Looking forward to the next video in the series!
:-)
Another great video Andreas, thank you.
I just wanted to add a bit regarding the SSB. With the conventional amplitude modulation AM we transmit the carrier (tone) and the modulation signal's spectrum on both sides of it with the amplitude of 50% of the carrier for 100% modulation (i.e. when the modulated wave goes down to zero). If we assume that we modulate with a sine wave, the power, transmitted in each sideband, is only a quarter of that of the carrier. The SSB cuts off on the carrier's power (as you can see on the displayed spectrum, not completely in practice), and on the other sideband. Overall it becomes 6 times more power efficient in this scenario (sinewave modulation). Power saving when idle simply comes from the absence of the modulation signal.
Thank you for your info.
This is just awesome, I definitely want to play with this.. I just have to figure out have to get the proper license my self..
Good idea. Not too difficult anymore without the Morse.
@@AndreasSpiess I was a radio operator in my time in the army so I guess I shouldn't be to hard, we had quite a lot of radio and antenna theory. Some still remain even if it's been a couple of years ago.. Like 28 to be exact.. And even morse doesn't scare me. I received it trough inheritance, my mother was a radio telégrafist in the merchant fleet back in the 60s..
@@oleeide9763 - in the US the ARRL is now doing HAM radio license exams online (Covid :/ ). Maybe other countries are doing similar...
Really enjoying this series - looking forward to the next instalment 73s
Thank you!
@@AndreasSpiess hey Andreas
Culd you please use you spectrum analyser
To show .. why ther is a difrence of 150kc from carrier.. Up or down
I am tired of retards..trimning ther radios to be in the middel .. not upper or power side band !!
Ther is 300kc betwin upper and power .. right
Nice one! Glad so many people like this and you are going on with this series.
We will see how this one performs...
Brilliant Andreas, Im building a ground station but have far less knowledge than you, your videos are a great help.
Even basic things, like setting up the pluto from out of the box, networking little things like that can trip up the beginner.
When I get it working I look forward to giving you a call . thanks.
I am sure it will work in the end. My main Pluto still does not want to connect via Wi-Fi :-(
Super! Even managed to acan the qr code on the back of your license and the office on the 4th floor.
:-)
Thank you Andreas. I'm looking forward to the next instalment.
Coming soon!
Re: Receiving signals from geostationary satellites. I have a little tiny Pioneer Inno handheld receiver for XM satellite radio, the size of a Walkman, and it can receive signals directly from geostationary orbit. Signals which are hundreds of channels of lovely stereo music, or BBC WS. I can bring it outside anywhere in North America, and listen to satellite radio. I still find that amazing. Cheers.
I assume those satellites work with higher power. So it is easier to receive them.
Much easier. The handheld receiver's antenna is inside a little plastic cylinder just 1 cm diameter by 2 cm high. On the other hand, the bandwidth of reception is presumably about MHz wide to accommodate so high a data rate to provide each boquet of channels.
I have to keep reminding myself that the XM satellites are in geostationary orbit, so far away.
I really like this ham satellite series! Just got my Swiss amateur radio call sign this week.
Welcome in the club!
It was a video with useful information. I watched with pleasure. thank you.
Glad you enjoyed it!
Another great video! It is good to remember that +3dB is "twice as much"
Only for power, though!
Thinking more and more about getting a license! Thank you for your videos.
Go for it!
I don't understand much of it. But i still love to watch it. Keep up the good work!
If you understood everything, maybe it would be boring ;-)
i hope your part comes faster than my random electronics
ordered stuff on march 5th and still waiting 🙏
I also get the things ordered beginning of March :-(
meanwhile I have stuff lying around since march but I'm not allowed in the lab to solder and test it
I did as well, however few things arrived already, even those ordered later. I am starting to believe Aliexpress now does not tell true info in shipping information.
You are amazing! Knowledgable and cool! If you go to Greece for holidays, all the locals will love you!
I fear I have to wait to travel to Greece ;-) This WE the Hackaday event in Belgrade would have been...
Thanks for continuing this series, cant wait to see the rest!
Thanks for watching!
Andreas, thank you for great explanation. Your videos are great. If the comments can support, we can do that.
Comments are always motivating. Thank you!
Ah - this brings back memories of working the LE Russian Sats (2m/10m) in the 90s. 5 Watts and a couple of coat hangers on a broom stick. "What are your working conditions, OM? .... Er, What????" I also contacted the MIR space-station with the same broomstick.
Interesting! For me the geostationary location is very handy because I can save the whole antenna movement mechanics.
It was already hard to convince the wife to get this one - lol
Yes, it was!
only knows who has one - a wife, i mean.
Was it „You already have 5 of these devices“?
Glad you keep making these, loving them
:-)
Really enjoying this series. RF projects are fascinating :)
Glad to hear it!
That is really interesting. I am looking forward to the next episode.
Glad to hear it!
Once again, another great video. Very interested in the series. Learned a lot from this video.
Glad to hear it!
Andreas .. you are amazing thaaank you so much 🙏🙏🙏
You are welcome!
Thanks for sharing! You are doing an amazing job in explaining this. I had almost bought a pluto two years ago, I should have done it...
Oh well... there will be more chances to get one. Best regards and 73 de PC4AD
Today I got a second one because this one is now fixed in the project. They had 500 in stock ;-)
Because of you I bought my first 2 lora boards recently. It's such an interesing topic and I'm sure thy're a good replacement for SIM-based communication :)
I do not think so. Maybe in niches.
It's interesting to see this come together, especially with you explaining it from start to finish - keep up the good work :)
Thanks, will do!
Always looking forward to your video blogs and they are always not long enough! 😉
Glad you like them! I try to keep them short on purpose :-(
Very good bonus video series! I'm looking forward to the next episode.
Glad you like them!
Excellent video, very clear and informative as usual.
Glad you liked it!
Great project..... I had just started building my own QO 100 station. Downlink is functional (40cm dish, TXCO modified LNB to 70cm into my FT847), now working on the uplink. Looking forward to your next videos ! 73s de Thomas F8DBY
40 cm is small! I will start with 80cm. Which LNB do you use?
@@AndreasSpiess I am using the TXCO modified LNB from qro.cz, it works really well, the frequency stability is very good. I had tried others too which I had lying around, unmodified, they all worked but of course frequency drift was abysmal ! 40cm is a small dish indeed but it works, I have the CW beacon at S5-6. Yesterday I installed an oval 50/60cm dish (horizontal oval), which is giving me an extra + 1 S on the scale. My coax feed line from the shack to the dish is quite short though, only about 3 meters.
Great video and it is a pleasure to follow you on your channel - Please go on it 📡📡📡
Thank you very much!
That's super cool! Can't wait for the next part!
:-)
Another awesome post, looking forward to the next one! Keep Up the good work dude!
Thanks a ton!
Hi, Andreas! , very interesting video. Keep on working in the project,. Keep with the recommendation. Greetings from Argentina.
I will!
Thank you for continuing the series.
You are welcome!
Great video once again...really good pickup and info on the power meter...so cheap I will get a couple
You are welcome!
Memory flash back 25+ years here to when I was a HAM (ZL2...), we had just got a new R&S-52 spectrum analyzer at the office, a must have.
I still have my UV eraser and eproms with the 6809's. I have written a lot of embedded code since then.
I see you are 6 months older than me, cool :)
Old, but not too rusty ;-)
nice job Andreas..looking forward to the next part..
Thank you!
Again very interesting...can not wait to see the final results ..
This will still take a few weeks :-(
This is very interesting. I've seen your channel pop up from time to time. But this antarctic challenge really caught my attention. Sub'ed
Welcome aboard the channel!
@@AndreasSpiess Thanks! Happy to be in the 1st row!
Awesome! I've been waiting for this video. :)
More to come!
Thanks for this series of videos - very interesting and informative - I have leant a few new things today and clarified some others - always heard that you should not transmit without an antenna attached now I know why it can damage RF transistors
It is always good to also know the "why?"...
Thanks for this video looking forward to the dish setup
Coming soon!
Very interesting, looking forward to the next video.
Coming soon!
Thanks again for great content. And heal this finger fast.
You are welcome! For eh finger, I mainly have to wait...
Thank you very much, it was very educational!
You are welcome!
Very fine. Can't wait to see more.
Hopefully next Thursday evening.
cant wait the next one in the series, thank you!!
Already out by now!
@@AndreasSpiess Yep watched it already thanks!!!!
A lot of people don't fully understand that SSB is AM. What most people call AM is actually DSB with carrier. Interesting here in VK standard and advanced licenses get to play in this 13cm band without special licenses from ACMA. Advanced get a full 120w constant or 400w PEP. Of course our friends in USA get 1500 PEP if they get that band. That's way more power than you'd realisticly need especially when running lots of gain on the antenna. For any non hams reading this the most important thing is line of sight. This is why NASA still hears Voyager 1 and 2 and big dishes and modern DSP. They're 18+ hours away at the speed of light. They don't run a lot of RF power considering how far away they are. So RF power is not all it's cracked up to be. Can't wait to hear your QSO.
I do not want to dig too much into radios. Otherwise I lose most of my viewers ;-)
Meh. 20 watts will be fine. :D You've REALLY gained my interest with this project! Makes me sad I scrapped my dish a few months ago!
They are not very expensive...
Great video, just in time for lunch. Thanks)
It was already late here ;-)
thank you for doing this
You are welcome!
Andreas, another great video. Looking forward to the next one. For a laugh you should have a small plaster on your finger pointer stick. Hope your real finger getting better :)
Great idea!
Something to point out here, these generations of amplifiers (they're all made by a single company, main chinese amp) did NOT have support for wifi modulation and bandwidths, they were straight dirty PAs. Now you can buy specifically crafted ones supporting 802.11 modulations, as well as bluetooth modulations.
Thank you for your additional info. We use SSB (very narrow signal) for the QO-100
In India we got some junk 2.1Ghz 3G band BTS PA module and converted to 2.4 Ghz with just tweaking the bias. Of course it's not easy to get it now, thanks to overwhelmed response by HAMs here, even the illiterate scrap dealer knows how costly it can be.
Anyway, we are getting around 40 watts output . I am on a same project with a pluto SDR, but as already you have shown it, I need a pre driver to drive the PA.
Thank you for the video. Also your POTY antenna one is great to start, as video illustration is far better than those on blogs.
Cheers. See you on QO100 or 20 Meter SSB, Europe remains open to India around 13:30 hours to 15:00 hours UTC.
Hope to see you down the log.
One more project if you want to try, the uSDX standalone SDR using Arduino.
Excellent piece or art to learn and see how things got into such a low performing Atmega328.
73 de VU3GDP
Guru
Unfortunately I am not QRV on HF. The only antenna I can mount for the moment is the dish. And a hotspot in my lab for DMR ;-) 73 de HB9BLA
Excellent video. Thank you! W2RSB | F4WCM.
You are welcome! 73 de HB9BLA
I love your videos. AMAZING.
Thank you!
Look forward to *Receiver* & *Antenna!*
Hopefully next week...
Dear Andreas, good to see that you are progressing with you QO100 Station project. I have one important wish for your next episodes. I would recommend that you repeat in each episode that it is mandatory of having a HAMRADIO license for doing a potential rebuild of your QO100 project. Please tell this all your non HAMRADIO followers again and again...... RF transmitting is serious stuff... best 73 de DM5TU
Thank you for your advice. If this is so important for you, maybe you add your comment to all other fellow OM UA-camrs. I am the only mentioning this fact.
Andreas Spiess Dear Andreas, it is not important for me rather it is important for our hobby. You are promoting that topic so it is your responsibility to ack so. I trust you. So in the soul purpose of HAMRADIO .... but technically how could I post a message to all the viewers ? Anz hint? 73s
I wish they'd do more ham radio testing online, at least here in the States. Last I checked, one still has to go to a testing center. Perhaps this will be one of the silver linings to come out of a global pandemic. I want to get my license and talk to satellites!!
Good luck for your test!
@@AndreasSpiess Thanks!
First of all, you are just full of information! How you remember all of that and not burn up $200+ device.....!!!! I can't keep up, but I love to at least learn something I'll probably never do. Thanks for such a great videos Andreas! Stay safe and let us know how much longer is your finger out of commission? Heel fast and well!
I try to include also stuff for "normal" people like dB/dBm or how to treat SMA connectors... The finger has another 3-4 weeks to go, if all is ok.
@@AndreasSpiess Well, lets get that finger fixed and time does that anyway, I hope! Yes, you do cover many subjects and I like that about you and your videos! Have a great weekend!
PERFECT!
Thank you!
👍 Perhaps consider a series of videos on HAM (Amateur) Radio. Your style would lend itself to be informative and entertaining.
(I do understand how much time is involved in video production so I recognize this would not be in conjunction with all the other topics)
This channel stays centered on sensors and microcontrollers. There are quite a few HAM channels around, so no need to add one. This project is an exception and only because of the wish of my Patreons and subscribers.
Lovely video
Thanks 🤗
Hello. Wonderful video, very rich in information. It will help me a lot, as I am planning to access the QO-100 and make many Dxs. Thank you for sharing. Hugs from the friend of Brazil, Miguel, PY1LO
73 de HB9BLA. See you on the satellite!
The licensee is authorized to operate amateur radio stations in compliance with CEPT Recommendation T/R 61-01 in the countries which have adopted it.
That is why it has the QR codes for the different languages on the back, I assume.
Oooh, you get a nice plastic card for your licence. We in the UK get a website and a link to download a PDF file :/
Also, "20w is too much" makes me laugh, as I use my 250w amplifier all the time 🤣. Granted that's doing about 50w on DATV, but I can use it on NB too, I just add 20db of attenuation so the 68.5db amplifier doesn't de-orbit qo100 :).
We have to pay 150$ a year for this "plastic card" :-(
I now have a 120cm dish and only need a few watts for SSB. Unfortunately I still have issus with my Adalm Pluto and the Ethernet connection to SDR console. So I am not QRV.
@@AndreasSpiess Have you done the grounding mod to the Pluto? The locking up when using ethernet comes from a difference in ground references, which flips the pluto back into USB mode, taking it out of OTG mode.
I fixed it by soldering a wire link across the choke on L7's ground.
I did not do it yet. But I will do it now... Thank you! I think that my Ethernet does not share the same ground. But anyway, it cannot hurt!
@@AndreasSpiess The difference doesn't need to be much, 250mv AD says here under "Why do a Rev C", but it's enough to pull it out of host mode and put it into device mode. wiki.analog.com/university/tools/pluto/hacking/hardware
They suggest changing a resistor, but when you see the size of it, it's just easier to join the grounds together :).
Thanks. I will not be building this project. Still enjoy watching. Voyeur?😃
No problem with me!
I always judge the output power of my rf devices by how much it tingles when coming near the antenna
The fluorescent tubes in my neighbors bedroom are perfect for tuning :-)
Genial und Danke
Bitte, gern geschehen...
I love the little hand!! Hhaa
:-)
This is great. Keep it up!
Thanks, will do!
Good Video :) a closer look at your radio license told me that we are born on the same day ;)
Excellent choice! Aquarius people are very easy-going ;-)
My math teacher would use this case to calculate the probability out of 200'000 subscribers...
@@AndreasSpiess it depends on the point of view, from my view this is interesting to know. Anyway you showed a cheap rf power meter which reminds me of my Monaco RF spectrum analyzer which goes from 20MHz up to 2.4GHz ish and some bands at 5.8GHz. Have you heard of this product or can you tell something about it? Im wondering if its a real tool and capable to measure real power or more a gadget because at this moment i cant tell and don't know how to find out without a reference.
I never heard this name
@1m20s: "...I have a Ham license since 1977..." Me too. February 1977. .... .. .... ..
I do no more remember the month. So both of us are already old farts...
Well at least I read „Radiobasteln für Jungen“ by Heinz Richter pretty much in those years, so I fart smaller farts. Thank god for still not having olfactory videos.
Thanks again Andreas.. Looking forward to the next videos! 73 Albert PA5OXW
You are welcome! 73 de HB9BLA
Keep it going
I will!
Great video! At 4:00 it should say 1mW = 0dBmW
But I know a lot of people just write dBm.
As an Engineer I think it looks wrong to leave out the Watt.
You are right. One core belief on this channel is: it's easier to confuse someone than to educate someone. So I must leave out a lot...
I have never seen dBmW in literature or anywhere else. It's not wrong if it's a convention to unambiguously use it that way.
Awesome. Thanks for sharing. I have a spectrum analyzer but it's only good to 1GHz so it's nice to know there's an inexpensive way to measure power. I don't think I have an SWR meter that will work up there either. Maybe I can find one in AliExpress.
Look at the VNA video I made. Much better than an SWR meter. Or wait till the antenna part...
There is cheap NanoVNA 2.0 available which is able to do measurements up to 3 GHz. The device is sold without calibration kit so you have to buy it additionally on your own.
@@AndreasSpiess , sq2jul,
Thanks. I'll look for that.
Thank you for the video...
My pleasure
Thank you
You're welcome
Awesome dear
Thanks 🤗
Woah that voice test spooked me
:-)
That's awesome =)
True! I like it, too.
Hi Andreas, thanks for the video - I was looking forward to it! There is a typo in the title, 2.5 instead of 2.4 GHz :) How is your finger?
I thought I changed it yesterday... Now it is changed. Thanks!