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Andreas Spiess

Andreas Spiess

4 роки тому

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.aliexpress.com/e/_dUe...
20W amplifier: s.click.aliexpress.com/e/_dWL...
8W amplifier: s.click.aliexpress.com/e/_dZt... or amzn.to/2SKoBLv
Power Meter: s.click.aliexpress.com/e/_Bfg... or amzn.to/35FNdtV or www.passion-radio.com/swr-pow...
SMA torque wrench: s.click.aliexpress.com/e/_d7o... or amzn.to/2zeEG5b
50W Attenuator (not tested): s.click.aliexpress.com/e/_dZA...
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/sensorsiot
My Patreon Page: / andreasspiess
Discord: / discord
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КОМЕНТАРІ: 437
@MattBrunton1965
@MattBrunton1965 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you for your nice words. I try to include a little "general knowledge" in the videos.
@Auxrad39
@Auxrad39 4 роки тому
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 :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad it helped
@gordslater
@gordslater 4 роки тому
I still giggle *every* time I see that hand on a stick
@tbyte007
@tbyte007 4 роки тому
But it is so useful - lot better than a finger and funnier then pointer :)
@martinsauerteig4882
@martinsauerteig4882 4 роки тому
I love his orange transparent version too.
@AndreasSpiess
@AndreasSpiess 4 роки тому
The orange is the original from the 90's
@ladedk
@ladedk 4 роки тому
It's an overhead projector relic, isn't it?
@lamerdan
@lamerdan 3 місяці тому
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.
@AndreasSpiess
@AndreasSpiess 3 місяці тому
You are welcome! I will tell my wife ;-)
@syirrus
@syirrus 4 роки тому
Thank you for posting a follow up to this. I'm learning a lot and still have a lot to learn :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
My pleasure!
@carstenolsen3641
@carstenolsen3641 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you! Next should follow tomorrow.
@mrmx2k
@mrmx2k 4 роки тому
Bravo! Thank you Andreas for giving us such gift with your videos!! (popcorn popping while waiting for next!) Keep up with your GREAT job!!
@AndreasSpiess
@AndreasSpiess 4 роки тому
My pleasure! Maybe already next Thursday evening...
@DougHanchard
@DougHanchard 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
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!
@Tchipo100
@Tchipo100 Рік тому
Again a clear and useful information from Switzerland ! TNX Vy much Andreas !
@AndreasSpiess
@AndreasSpiess Рік тому
My pleasure!
@michaelknauth943
@michaelknauth943 4 роки тому
Thank you Andreas. I'm looking forward to the next instalment.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Coming soon!
@estebanalarcon7340
@estebanalarcon7340 4 роки тому
Thank you for continuing the series.
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome!
@varunkoganti9067
@varunkoganti9067 4 роки тому
It was already hard to convince the wife to get this one - lol
@AndreasSpiess
@AndreasSpiess 4 роки тому
Yes, it was!
@andremantovani
@andremantovani 3 роки тому
only knows who has one - a wife, i mean.
@CowMowTV
@CowMowTV 3 роки тому
Was it „You already have 5 of these devices“?
@Reuben1024
@Reuben1024 4 роки тому
Really enjoying this series - looking forward to the next instalment 73s
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you!
@kennethschultz6465
@kennethschultz6465 4 роки тому
@@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
@fjs1111
@fjs1111 Рік тому
Glad you keep making these, loving them
@AndreasSpiess
@AndreasSpiess Рік тому
:-)
@bulthy1958
@bulthy1958 3 роки тому
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.
@AndreasSpiess
@AndreasSpiess 3 роки тому
I am sure it will work in the end. My main Pluto still does not want to connect via Wi-Fi :-(
@The45thClown
@The45thClown 4 роки тому
Thank you for continuing the series, interesting as always.
@AndreasSpiess
@AndreasSpiess 4 роки тому
My pleasure!
@umutk5614
@umutk5614 4 роки тому
That is really interesting. I am looking forward to the next episode.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad to hear it!
@opless
@opless 4 роки тому
Another awesome post, looking forward to the next one! Keep Up the good work dude!
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thanks a ton!
@Chris.Schulz
@Chris.Schulz 4 роки тому
Once again, another great video. Very interested in the series. Learned a lot from this video.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad to hear it!
@peter.stimpel
@peter.stimpel 4 роки тому
Nice one! Glad so many people like this and you are going on with this series.
@AndreasSpiess
@AndreasSpiess 4 роки тому
We will see how this one performs...
@georgequarterman8413
@georgequarterman8413 3 роки тому
Excellent video, very clear and informative as usual.
@AndreasSpiess
@AndreasSpiess 3 роки тому
Glad you liked it!
@electronic7979
@electronic7979 4 роки тому
It was a video with useful information. I watched with pleasure. thank you.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad you enjoyed it!
@TheFriz1234
@TheFriz1234 4 роки тому
Thinking more and more about getting a license! Thank you for your videos.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Go for it!
@dominikworkshop6007
@dominikworkshop6007 4 роки тому
That's super cool! Can't wait for the next part!
@AndreasSpiess
@AndreasSpiess 4 роки тому
:-)
@DO7DH
@DO7DH 4 роки тому
Very good bonus video series! I'm looking forward to the next episode.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad you like them!
@nosafetyswitch9378
@nosafetyswitch9378 4 роки тому
You are amazing! Knowledgable and cool! If you go to Greece for holidays, all the locals will love you!
@AndreasSpiess
@AndreasSpiess 4 роки тому
I fear I have to wait to travel to Greece ;-) This WE the Hackaday event in Belgrade would have been...
@4sIElectronics
@4sIElectronics 4 роки тому
"displacement can only be replaced with more displacement" 👍, good video as always, keep the series and other videos coming 👍
@GlennHamblin
@GlennHamblin 4 роки тому
It's all at the pure cubic doll-hairs
@AndreasSpiess
@AndreasSpiess 4 роки тому
That's the plan!
@suvirkumar3237
@suvirkumar3237 4 роки тому
Thanks for this video looking forward to the dish setup
@AndreasSpiess
@AndreasSpiess 4 роки тому
Coming soon!
@Os.-
@Os.- 4 роки тому
It's interesting to see this come together, especially with you explaining it from start to finish - keep up the good work :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thanks, will do!
@Lastaii
@Lastaii 4 роки тому
Really enjoying this series. RF projects are fascinating :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad to hear it!
@SimjetAU
@SimjetAU 4 роки тому
Great video once again...really good pickup and info on the power meter...so cheap I will get a couple
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome!
@WacKEDmaN
@WacKEDmaN 4 роки тому
nice job Andreas..looking forward to the next part..
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you!
@rsatterf01
@rsatterf01 4 роки тому
Thanks for continuing this series, cant wait to see the rest!
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thanks for watching!
@Gunhed507
@Gunhed507 4 роки тому
Always looking forward to your video blogs and they are always not long enough! 😉
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad you like them! I try to keep them short on purpose :-(
@oscarliguori1243
@oscarliguori1243 4 роки тому
cant wait the next one in the series, thank you!!
@AndreasSpiess
@AndreasSpiess 4 роки тому
Already out by now!
@oscarliguori1243
@oscarliguori1243 4 роки тому
@@AndreasSpiess Yep watched it already thanks!!!!
@callewretstrom689
@callewretstrom689 4 роки тому
I don't understand much of it. But i still love to watch it. Keep up the good work!
@AndreasSpiess
@AndreasSpiess 4 роки тому
If you understood everything, maybe it would be boring ;-)
@Alan2E0KVRKing
@Alan2E0KVRKing 4 роки тому
Very interesting, looking forward to the next video.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Coming soon!
@thomasschmidt5934
@thomasschmidt5934 4 роки тому
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
@AndreasSpiess
@AndreasSpiess 4 роки тому
40 cm is small! I will start with 80cm. Which LNB do you use?
@thomasschmidt5934
@thomasschmidt5934 4 роки тому
@@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.
@AL6S00740
@AL6S00740 4 роки тому
Dear Sir, amazing 😘 amazing job, good thing that the XYL allowed the purchase of the second attenuator hehehe. Although perfect description
@AndreasSpiess
@AndreasSpiess 4 роки тому
This was below the budget she controls ;-)
@AL6S00740
@AL6S00740 4 роки тому
@@AndreasSpiess hehe long live the ebay and alliexpress... I guess a bird one would set you back several hundreds?
@hoggif
@hoggif 4 роки тому
Looking forward to the next video in the series!
@AndreasSpiess
@AndreasSpiess 4 роки тому
:-)
@artiem5262
@artiem5262 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
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.
@mikehensley78
@mikehensley78 4 роки тому
Awesome! I've been waiting for this video. :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
More to come!
@KirillStolyarov
@KirillStolyarov 4 роки тому
Andreas, thank you for great explanation. Your videos are great. If the comments can support, we can do that.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Comments are always motivating. Thank you!
@TheChubacapra
@TheChubacapra 3 роки тому
i am icelandic live in denmark now and i love your videos
@AndreasSpiess
@AndreasSpiess 3 роки тому
Thank you for your feedback!
@coolchop
@coolchop 4 роки тому
Very fine. Can't wait to see more.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Hopefully next Thursday evening.
@freelancer917
@freelancer917 4 роки тому
I really like this ham satellite series! Just got my Swiss amateur radio call sign this week.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Welcome in the club!
@hernantuduri3102
@hernantuduri3102 4 роки тому
Hi, Andreas! , very interesting video. Keep on working in the project,. Keep with the recommendation. Greetings from Argentina.
@AndreasSpiess
@AndreasSpiess 4 роки тому
I will!
@aneeshprasobhan
@aneeshprasobhan 4 роки тому
thank you for doing this
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome!
@keithroberts5946
@keithroberts5946 4 роки тому
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
@AndreasSpiess
@AndreasSpiess 4 роки тому
It is always good to also know the "why?"...
@aggibson74
@aggibson74 4 роки тому
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
@AndreasSpiess
@AndreasSpiess 4 роки тому
Welcome aboard the channel!
@aggibson74
@aggibson74 4 роки тому
@@AndreasSpiess Thanks! Happy to be in the 1st row!
@catcam
@catcam 4 роки тому
Thanks again for great content. And heal this finger fast.
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome! For eh finger, I mainly have to wait...
@CharlesReiche
@CharlesReiche 4 роки тому
This is great. Keep it up!
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thanks, will do!
@tonisee2
@tonisee2 4 роки тому
Thank you very much, it was very educational!
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome!
@mohammadhushki96
@mohammadhushki96 4 роки тому
Andreas .. you are amazing thaaank you so much 🙏🙏🙏
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome!
@LawpickingLocksmith
@LawpickingLocksmith 3 роки тому
Super! Even managed to acan the qr code on the back of your license and the office on the 4th floor.
@AndreasSpiess
@AndreasSpiess 3 роки тому
:-)
@user-cu5fq9ys3u
@user-cu5fq9ys3u 4 роки тому
Great video, just in time for lunch. Thanks)
@AndreasSpiess
@AndreasSpiess 4 роки тому
It was already late here ;-)
@MaxDiscere
@MaxDiscere 4 роки тому
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 :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
I do not think so. Maybe in niches.
@deanbell5164
@deanbell5164 4 роки тому
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 :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
Old, but not too rusty ;-)
@barrymcardle7771
@barrymcardle7771 4 роки тому
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 :)
@AndreasSpiess
@AndreasSpiess 4 роки тому
Great idea!
@ronproveniers3655
@ronproveniers3655 4 роки тому
Again very interesting...can not wait to see the final results ..
@AndreasSpiess
@AndreasSpiess 4 роки тому
This will still take a few weeks :-(
@jamess1787
@jamess1787 4 роки тому
I love your videos. AMAZING.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you!
@vanuitdeauto
@vanuitdeauto 4 роки тому
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
@AndreasSpiess
@AndreasSpiess 4 роки тому
Today I got a second one because this one is now fixed in the project. They had 500 in stock ;-)
@easthulk99
@easthulk99 4 роки тому
Thank you for the video...
@AndreasSpiess
@AndreasSpiess 4 роки тому
My pleasure
@tubeDude48
@tubeDude48 4 роки тому
Look forward to *Receiver* & *Antenna!*
@AndreasSpiess
@AndreasSpiess 4 роки тому
Hopefully next week...
@alexandern8671
@alexandern8671 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you for your info.
@MichaRutkowskiEngineering
@MichaRutkowskiEngineering 4 роки тому
Another great video! It is good to remember that +3dB is "twice as much"
@AndreasSpiess
@AndreasSpiess 4 роки тому
Only for power, though!
@richardperritt
@richardperritt 4 роки тому
👍 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)
@AndreasSpiess
@AndreasSpiess 4 роки тому
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.
@sajjsamm
@sajjsamm 3 роки тому
thanks for your great detailed videos. one thing I observed on your spectrum analyzer screen was that carrier on SSB tx. is that some kind of extra carrier leakage from plutosdr? 73's de EP6DSP
@AndreasSpiess
@AndreasSpiess 3 роки тому
The sound of the SA fan ;-)
@JxH
@JxH 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
I assume those satellites work with higher power. So it is easier to receive them.
@JxH
@JxH 4 роки тому
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.
@lynes2peters438
@lynes2peters438 4 роки тому
Great subject!
@AndreasSpiess
@AndreasSpiess 4 роки тому
Glad you enjoyed it
@BenjaminEggerstedt
@BenjaminEggerstedt 4 роки тому
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?
@AndreasSpiess
@AndreasSpiess 4 роки тому
I thought I changed it yesterday... Now it is changed. Thanks!
@oleeide9763
@oleeide9763 4 роки тому
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..
@AndreasSpiess
@AndreasSpiess 4 роки тому
Good idea. Not too difficult anymore without the Morse.
@oleeide9763
@oleeide9763 4 роки тому
@@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..
@EngineeringVignettes
@EngineeringVignettes 4 роки тому
@@oleeide9763 - in the US the ARRL is now doing HAM radio license exams online (Covid :/ ). Maybe other countries are doing similar...
@johnwilson3918
@johnwilson3918 3 роки тому
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.
@AndreasSpiess
@AndreasSpiess 3 роки тому
Interesting! For me the geostationary location is very handy because I can save the whole antenna movement mechanics.
@tonysfun
@tonysfun 4 роки тому
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!
@AndreasSpiess
@AndreasSpiess 4 роки тому
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.
@tonysfun
@tonysfun 4 роки тому
@@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!
@antoniomoreno6557
@antoniomoreno6557 4 роки тому
Great video and it is a pleasure to follow you on your channel - Please go on it 📡📡📡
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you very much!
@JohnTarbox
@JohnTarbox 4 роки тому
Thanks again for this excellent series! One thing that is known to the experienced hams but which may be overlooked by new players is that one must take into account cable and connector losses, particularly at frequencies this high. I assume you have at least three cables and six SMA connectors between the Pluto and the antenna given that you are using two amplifiers. Wouldn't this cause a loss of at least 3-6 dB?
@AndreasSpiess
@AndreasSpiess 4 роки тому
Probably 2-3 dB or so. I use very short cables. But I have a 20 dB amplifier and theoretically only need 6 dB. So no issue.
@Aemilindore
@Aemilindore 4 роки тому
Lovely video
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thanks 🤗
@tropcm
@tropcm 4 роки тому
PERFECT!
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you!
@GlennHamblin
@GlennHamblin 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Look at the VNA video I made. Much better than an SWR meter. Or wait till the antenna part...
@sq2jul
@sq2jul 4 роки тому
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.
@GlennHamblin
@GlennHamblin 4 роки тому
@@AndreasSpiess , sq2jul, Thanks. I'll look for that.
@verschalter
@verschalter 4 роки тому
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
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you for your advice. If this is so important for you, maybe you add your comment to all other fellow OM UKpostsrs. I am the only mentioning this fact.
@verschalter
@verschalter 4 роки тому
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
@faidularcs
@faidularcs 4 роки тому
Awesome dear
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thanks 🤗
@Markus_Meldekopf
@Markus_Meldekopf 4 роки тому
Genial und Danke
@AndreasSpiess
@AndreasSpiess 4 роки тому
Bitte, gern geschehen...
@N4HAY
@N4HAY 4 роки тому
Perhaps the spurious emissions result from intermod distortion due to the 28v boost converter. Would be interesting to power the module from a separate linear 28v supply?
@AndreasSpiess
@AndreasSpiess 4 роки тому
They were already there before the PA, just less visible, but similar distance. So I will check again with the final GPSDO.
@bilalalimami1317
@bilalalimami1317 4 роки тому
Thank you
@AndreasSpiess
@AndreasSpiess 4 роки тому
You're welcome
@robinburke1469
@robinburke1469 4 роки тому
Excellent video. Thank you! W2RSB | F4WCM.
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome! 73 de HB9BLA
@berndeckenfels
@berndeckenfels 4 роки тому
Woah that voice test spooked me
@AndreasSpiess
@AndreasSpiess 4 роки тому
:-)
@alexramos2568
@alexramos2568 4 роки тому
Keep it going
@AndreasSpiess
@AndreasSpiess 4 роки тому
I will!
@chuxxsss
@chuxxsss 4 роки тому
I have a license like that Andreas. The spectrum analyser should have a fuse on that input.
@AndreasSpiess
@AndreasSpiess 4 роки тому
I do not want to try the fuse ;-)
@alexengineering3754
@alexengineering3754 4 роки тому
Good Video :) a closer look at your radio license told me that we are born on the same day ;)
@AndreasSpiess
@AndreasSpiess 4 роки тому
Excellent choice! Aquarius people are very easy-going ;-) My math teacher would use this case to calculate the probability out of 200'000 subscribers...
@alexengineering3754
@alexengineering3754 4 роки тому
@@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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
I never heard this name
@kwinzman
@kwinzman 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
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...
@MarianKeller
@MarianKeller 4 роки тому
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.
@miguelfrancisco1035
@miguelfrancisco1035 4 роки тому
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
@AndreasSpiess
@AndreasSpiess 4 роки тому
73 de HB9BLA. See you on the satellite!
@PapasDino
@PapasDino 4 роки тому
Thanks Andreas for continuing. Was there a carrier present during your SSB test, it looked like there was a separate tone just to the left of the modulation? Keep going! 73 - Dino KLØS (ham since '69)
@AndreasSpiess
@AndreasSpiess 4 роки тому
The sound of the spectrum analyzer ;-)
@avdeur
@avdeur 4 роки тому
Thanks again Andreas.. Looking forward to the next videos! 73 Albert PA5OXW
@AndreasSpiess
@AndreasSpiess 4 роки тому
You are welcome! 73 de HB9BLA
@PhG1961
@PhG1961 4 роки тому
Wonderfull !
@AndreasSpiess
@AndreasSpiess 4 роки тому
Thank you!
@db1tau75
@db1tau75 3 роки тому
I am currently looking into the chinese 20dB LNA pre amp. Do you think it would also work as a RX pre amp near the antenna if you have to use a lot of high loss cable between antenna and receiver?
@AndreasSpiess
@AndreasSpiess 3 роки тому
Maybe. But the LNBs already have amplifiers and you do not need one
@dougbas3980
@dougbas3980 2 роки тому
Thanks. I will not be building this project. Still enjoy watching. Voyeur?😃
@AndreasSpiess
@AndreasSpiess 2 роки тому
No problem with me!
@zacki5663
@zacki5663 4 місяці тому
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.
@AndreasSpiess
@AndreasSpiess 4 місяці тому
Thank you for your additional info. We use SSB (very narrow signal) for the QO-100
@ivanadeauto
@ivanadeauto 4 роки тому
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.
@AndreasSpiess
@AndreasSpiess 4 роки тому
That is why it has the QR codes for the different languages on the back, I assume.
@hopje01
@hopje01 4 роки тому
For the 2.5G uplink, do you use a dish or an array of yagi’s? If the 20W uplink power + antenna gain is sufficient depends on the available satellite up/down link budget. 8W could be enough with a clear sky, but a rainy day at the transmitting location and/or on the receiving location can put your signal in the noise. 73’s on5vb
@AndreasSpiess
@AndreasSpiess 4 роки тому
I will start with a POTY and an 80 cm dish. 73 de HB9BLA
@hopje01
@hopje01 4 роки тому
Andreas Spiess Nice solution. I was wondering how the feed construction would be.. I think the dish gain will drop about 50% at 2.4G. At the receiving side, is the selected freq deviation tracked in software? The local oscillator of a low cost lnb shall not be super stable.
@AndreasSpiess
@AndreasSpiess 4 роки тому
I plan to show both possibilities
@jonneycon6157
@jonneycon6157 4 роки тому
Good work and can u please clearly explain why are u using sdr console than other software like sdr angel gqrx are there.
@AndreasSpiess
@AndreasSpiess 4 роки тому
Simple: Because all others use it.
@jonneycon6157
@jonneycon6157 4 роки тому
@@AndreasSpiess can u give a try on that software and give us a clear view on these software which u will know
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