#329

Рет қаралды 67,080

4 жыл бұрын

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...
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Пікірлер: 437

@MattBrunton1965 4 жыл бұрын

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 4 жыл бұрын

Thank you for your nice words. I try to include a little "general knowledge" in the videos.

@lamerdan 6 ай бұрын

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 6 ай бұрын

You are welcome! I will tell my wife ;-)

@carstenolsen3641 4 жыл бұрын

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 4 жыл бұрын

Thank you! Next should follow tomorrow.

@Auxrad39 4 жыл бұрын

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 4 жыл бұрын

Glad it helped

@mrmx2k 4 жыл бұрын

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 4 жыл бұрын

My pleasure! Maybe already next Thursday evening...

@syirrus 4 жыл бұрын

Thank you for posting a follow up to this. I'm learning a lot and still have a lot to learn :)

@AndreasSpiess 4 жыл бұрын

My pleasure!

@Tchipo100 2 жыл бұрын

Again a clear and useful information from Switzerland ! TNX Vy much Andreas !

@AndreasSpiess 2 жыл бұрын

My pleasure!

@DougHanchard 4 жыл бұрын

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 4 жыл бұрын

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!

@Chris.Schulz 4 жыл бұрын

Once again, another great video. Very interested in the series. Learned a lot from this video.

@AndreasSpiess 4 жыл бұрын

Glad to hear it!

@opless 4 жыл бұрын

Another awesome post, looking forward to the next one! Keep Up the good work dude!

@AndreasSpiess 4 жыл бұрын

Thanks a ton!

@Os.- 4 жыл бұрын

It's interesting to see this come together, especially with you explaining it from start to finish - keep up the good work :)

@AndreasSpiess 4 жыл бұрын

Thanks, will do!

@nosafetyswitch9378 4 жыл бұрын

You are amazing! Knowledgable and cool! If you go to Greece for holidays, all the locals will love you!

@AndreasSpiess 4 жыл бұрын

I fear I have to wait to travel to Greece ;-) This WE the Hackaday event in Belgrade would have been...

@fjs1111 2 жыл бұрын

Glad you keep making these, loving them

@AndreasSpiess 2 жыл бұрын

:-)

@DO7DH 4 жыл бұрын

Very good bonus video series! I'm looking forward to the next episode.

@AndreasSpiess 4 жыл бұрын

Glad you like them!

@gordslater 4 жыл бұрын

I still giggle *every* time I see that hand on a stick

@tbyte007 4 жыл бұрын

But it is so useful - lot better than a finger and funnier then pointer :)

@martinsauerteig4882 4 жыл бұрын

I love his orange transparent version too.

@AndreasSpiess 4 жыл бұрын

The orange is the original from the 90's

@ladedk 4 жыл бұрын

It's an overhead projector relic, isn't it?

@michaelknauth943 4 жыл бұрын

Thank you Andreas. I'm looking forward to the next instalment.

@AndreasSpiess 4 жыл бұрын

Coming soon!

@umutk5614 4 жыл бұрын

That is really interesting. I am looking forward to the next episode.

@AndreasSpiess 4 жыл бұрын

Glad to hear it!

@The45thClown 4 жыл бұрын

Thank you for continuing the series, interesting as always.

@AndreasSpiess 4 жыл бұрын

My pleasure!

@estebanalarcon7340 4 жыл бұрын

Thank you for continuing the series.

@AndreasSpiess 4 жыл бұрын

You are welcome!

@peter.stimpel 4 жыл бұрын

Nice one! Glad so many people like this and you are going on with this series.

@AndreasSpiess 4 жыл бұрын

We will see how this one performs...

@Gunhed507 4 жыл бұрын

Always looking forward to your video blogs and they are always not long enough! 😉

@AndreasSpiess 4 жыл бұрын

Glad you like them! I try to keep them short on purpose :-(

@Reuben1024 4 жыл бұрын

Really enjoying this series - looking forward to the next instalment 73s

@AndreasSpiess 4 жыл бұрын

Thank you!

@kennethschultz6465 4 жыл бұрын

@@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

@rsatterf01 4 жыл бұрын

Thanks for continuing this series, cant wait to see the rest!

@AndreasSpiess 4 жыл бұрын

Thanks for watching!

@mikehensley78 4 жыл бұрын

Awesome! I've been waiting for this video. :)

@AndreasSpiess 4 жыл бұрын

More to come!

@dominikworkshop6007 4 жыл бұрын

That's super cool! Can't wait for the next part!

@AndreasSpiess 4 жыл бұрын

:-)

@georgequarterman8413 3 жыл бұрын

Excellent video, very clear and informative as usual.

@AndreasSpiess 3 жыл бұрын

Glad you liked it!

@bulthy1958 3 жыл бұрын

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 3 жыл бұрын

I am sure it will work in the end. My main Pluto still does not want to connect via Wi-Fi :-(

@coolchop 4 жыл бұрын

Very fine. Can't wait to see more.

@AndreasSpiess 4 жыл бұрын

Hopefully next Thursday evening.

@TheFriz1234 4 жыл бұрын

Thinking more and more about getting a license! Thank you for your videos.

@AndreasSpiess 4 жыл бұрын

Go for it!

@callewretstrom689 4 жыл бұрын

I don't understand much of it. But i still love to watch it. Keep up the good work!

@AndreasSpiess 4 жыл бұрын

If you understood everything, maybe it would be boring ;-)

@Alan2E0KVRKing 4 жыл бұрын

Very interesting, looking forward to the next video.

@AndreasSpiess 4 жыл бұрын

Coming soon!

@KirillStolyarov 4 жыл бұрын

Andreas, thank you for great explanation. Your videos are great. If the comments can support, we can do that.

@AndreasSpiess 4 жыл бұрын

Comments are always motivating. Thank you!

@Lastaii 4 жыл бұрын

Really enjoying this series. RF projects are fascinating :)

@AndreasSpiess 4 жыл бұрын

Glad to hear it!

@oscarliguori1243 4 жыл бұрын

cant wait the next one in the series, thank you!!

@AndreasSpiess 4 жыл бұрын

Already out by now!

@oscarliguori1243 4 жыл бұрын

@@AndreasSpiess Yep watched it already thanks!!!!

@electronic7979 4 жыл бұрын

It was a video with useful information. I watched with pleasure. thank you.

@AndreasSpiess 4 жыл бұрын

Glad you enjoyed it!

@aggibson74 4 жыл бұрын

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 4 жыл бұрын

Welcome aboard the channel!

@aggibson74 4 жыл бұрын

@@AndreasSpiess Thanks! Happy to be in the 1st row!

@suvirkumar3237 4 жыл бұрын

Thanks for this video looking forward to the dish setup

@AndreasSpiess 4 жыл бұрын

Coming soon!

@SimjetAU 4 жыл бұрын

Great video once again...really good pickup and info on the power meter...so cheap I will get a couple

@AndreasSpiess 4 жыл бұрын

You are welcome!

@hernantuduri3102 4 жыл бұрын

Hi, Andreas! , very interesting video. Keep on working in the project,. Keep with the recommendation. Greetings from Argentina.

@AndreasSpiess 4 жыл бұрын

I will!

@WacKEDmaN 4 жыл бұрын

nice job Andreas..looking forward to the next part..

@AndreasSpiess 4 жыл бұрын

Thank you!

@freelancer917 4 жыл бұрын

I really like this ham satellite series! Just got my Swiss amateur radio call sign this week.

@AndreasSpiess 4 жыл бұрын

Welcome in the club!

@user-cu5fq9ys3u 4 жыл бұрын

Great video, just in time for lunch. Thanks)

@AndreasSpiess 4 жыл бұрын

It was already late here ;-)

@thomasschmidt5934 4 жыл бұрын

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 4 жыл бұрын

40 cm is small! I will start with 80cm. Which LNB do you use?

@thomasschmidt5934 4 жыл бұрын

@@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.

@MaxDiscere 4 жыл бұрын

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 4 жыл бұрын

I do not think so. Maybe in niches.

@4sIElectronics 4 жыл бұрын

"displacement can only be replaced with more displacement" 👍, good video as always, keep the series and other videos coming 👍

@GlennHamblin 4 жыл бұрын

It's all at the pure cubic doll-hairs

@AndreasSpiess 4 жыл бұрын

That's the plan!

@LawpickingLocksmith 3 жыл бұрын

Super! Even managed to acan the qr code on the back of your license and the office on the 4th floor.

@AndreasSpiess 3 жыл бұрын

:-)

@tonisee2 4 жыл бұрын

Thank you very much, it was very educational!

@AndreasSpiess 4 жыл бұрын

You are welcome!

@barrymcardle7771 4 жыл бұрын

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 4 жыл бұрын

Great idea!

@TheChubacapra 3 жыл бұрын

i am icelandic live in denmark now and i love your videos

@AndreasSpiess 3 жыл бұрын

Thank you for your feedback!

@catcam 4 жыл бұрын

Thanks again for great content. And heal this finger fast.

@AndreasSpiess 4 жыл бұрын

You are welcome! For eh finger, I mainly have to wait...

@ronproveniers3655 4 жыл бұрын

Again very interesting...can not wait to see the final results ..

@AndreasSpiess 4 жыл бұрын

This will still take a few weeks :-(

@varunkoganti9067 4 жыл бұрын

It was already hard to convince the wife to get this one - lol

@AndreasSpiess 4 жыл бұрын

Yes, it was!

@andremantovani 4 жыл бұрын

only knows who has one - a wife, i mean.

@CowMowTV 3 жыл бұрын

Was it „You already have 5 of these devices“?

@hoggif 4 жыл бұрын

Looking forward to the next video in the series!

@AndreasSpiess 4 жыл бұрын

:-)

@CharlesReiche 4 жыл бұрын

This is great. Keep it up!

@AndreasSpiess 4 жыл бұрын

Thanks, will do!

@deanbell5164 4 жыл бұрын

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 4 жыл бұрын

Old, but not too rusty ;-)

@artiem5262 4 жыл бұрын

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 4 жыл бұрын

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.

@MichaRutkowskiEngineering 4 жыл бұрын

Another great video! It is good to remember that +3dB is "twice as much"

@AndreasSpiess 4 жыл бұрын

Only for power, though!

@mohammadhushki96 4 жыл бұрын

Andreas .. you are amazing thaaank you so much 🙏🙏🙏

@AndreasSpiess 4 жыл бұрын

You are welcome!

@jamess1787 4 жыл бұрын

I love your videos. AMAZING.

@AndreasSpiess 4 жыл бұрын

Thank you!

@alexandern8671 4 жыл бұрын

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 4 жыл бұрын

Thank you for your info.

@vanuitdeauto 4 жыл бұрын

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 4 жыл бұрын

Today I got a second one because this one is now fixed in the project. They had 500 in stock ;-)

@keithroberts5946 4 жыл бұрын

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 4 жыл бұрын

It is always good to also know the "why?"...

@aneeshprasobhan 4 жыл бұрын

thank you for doing this

@AndreasSpiess 4 жыл бұрын

You are welcome!

@AL6S00740 4 жыл бұрын

Dear Sir, amazing 😘 amazing job, good thing that the XYL allowed the purchase of the second attenuator hehehe. Although perfect description

@AndreasSpiess 4 жыл бұрын

This was below the budget she controls ;-)

@AL6S00740 4 жыл бұрын

@@AndreasSpiess hehe long live the ebay and alliexpress... I guess a bird one would set you back several hundreds?

@johnwilson3918 4 жыл бұрын

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 4 жыл бұрын

Interesting! For me the geostationary location is very handy because I can save the whole antenna movement mechanics.

@richardperritt 4 жыл бұрын

👍 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 4 жыл бұрын

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.

@easthulk99 4 жыл бұрын

Thank you for the video...

@AndreasSpiess 4 жыл бұрын

My pleasure

@verschalter 4 жыл бұрын

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 4 жыл бұрын

Thank you for your advice. If this is so important for you, maybe you add your comment to all other fellow OM KZfaqrs. I am the only mentioning this fact.

@verschalter 4 жыл бұрын

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

@lynes2peters438 4 жыл бұрын

Great subject!

@AndreasSpiess 4 жыл бұрын

Glad you enjoyed it

@Aemilindore 4 жыл бұрын

Lovely video

@AndreasSpiess 4 жыл бұрын

Thanks 🤗

@Meldekopf 4 жыл бұрын

Genial und Danke

@AndreasSpiess 4 жыл бұрын

Bitte, gern geschehen...

@faidularcs 4 жыл бұрын

Awesome dear

@AndreasSpiess 4 жыл бұрын

Thanks 🤗

@JxH 4 жыл бұрын

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 4 жыл бұрын

I assume those satellites work with higher power. So it is easier to receive them.

@JxH 4 жыл бұрын

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.

@tubeDude48 4 жыл бұрын

Look forward to *Receiver* & *Antenna!*

@AndreasSpiess 4 жыл бұрын

Hopefully next week...

@antoniomoreno6557 4 жыл бұрын

Great video and it is a pleasure to follow you on your channel - Please go on it 📡📡📡

@AndreasSpiess 4 жыл бұрын

Thank you very much!

@tropcm 4 жыл бұрын

PERFECT!

@AndreasSpiess 4 жыл бұрын

Thank you!

@RinaldiMeteoric 4 жыл бұрын

That's awesome =)

@AndreasSpiess 4 жыл бұрын

True! I like it, too.

@tonysfun 4 жыл бұрын

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 4 жыл бұрын

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 4 жыл бұрын

@@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!

@alexramos2568 4 жыл бұрын

Keep it going

@AndreasSpiess 4 жыл бұрын

I will!

@bilalalimami1317 4 жыл бұрын

Thank you

@AndreasSpiess 4 жыл бұрын

You're welcome

@oleeide9763 4 жыл бұрын

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 4 жыл бұрын

Good idea. Not too difficult anymore without the Morse.

@oleeide9763 4 жыл бұрын

@@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 4 жыл бұрын

@@oleeide9763 - in the US the ARRL is now doing HAM radio license exams online (Covid :/ ). Maybe other countries are doing similar...

@PhG1961 4 жыл бұрын

Wonderfull !

@AndreasSpiess 4 жыл бұрын

Thank you!

@robinburke1469 4 жыл бұрын

Excellent video. Thank you! W2RSB | F4WCM.

@AndreasSpiess 4 жыл бұрын

You are welcome! 73 de HB9BLA

@BenjaminEggerstedt 4 жыл бұрын

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 4 жыл бұрын

I thought I changed it yesterday... Now it is changed. Thanks!

@avdeur 4 жыл бұрын

Thanks again Andreas.. Looking forward to the next videos! 73 Albert PA5OXW

@AndreasSpiess 4 жыл бұрын

You are welcome! 73 de HB9BLA

@murphyking79 2 жыл бұрын

I love the little hand!! Hhaa

@AndreasSpiess 2 жыл бұрын

:-)

@alexengineering3754 4 жыл бұрын

Good Video :) a closer look at your radio license told me that we are born on the same day ;)

@AndreasSpiess 4 жыл бұрын

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 4 жыл бұрын

@@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 4 жыл бұрын

I never heard this name

@chuxxsss 4 жыл бұрын

I have a license like that Andreas. The spectrum analyser should have a fuse on that input.

@AndreasSpiess 4 жыл бұрын

I do not want to try the fuse ;-)

@berndeckenfels 4 жыл бұрын

Woah that voice test spooked me

@AndreasSpiess 4 жыл бұрын

:-)

@JohnTarbox 4 жыл бұрын

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 4 жыл бұрын

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.

@miguelfrancisco1035 4 жыл бұрын

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 4 жыл бұрын

73 de HB9BLA. See you on the satellite!

@PapasDino 4 жыл бұрын

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 4 жыл бұрын

The sound of the spectrum analyzer ;-)

@elesjuan 4 жыл бұрын

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!

@AndreasSpiess 4 жыл бұрын

They are not very expensive...

@vk3fbab 4 жыл бұрын

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.

@AndreasSpiess 4 жыл бұрын

I do not want to dig too much into radios. Otherwise I lose most of my viewers ;-)

@GlennHamblin 4 жыл бұрын

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 4 жыл бұрын

Look at the VNA video I made. Much better than an SWR meter. Or wait till the antenna part...

@sq2jul 4 жыл бұрын

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 4 жыл бұрын

@@AndreasSpiess , sq2jul, Thanks. I'll look for that.

@kwinzman 4 жыл бұрын

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 4 жыл бұрын

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 4 жыл бұрын

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.

@ladedk 4 жыл бұрын

I forgot to leave a comment on the last video, so I'm extremely pleased to see that my co-viewers covered my back. Thank you all!

@AndreasSpiess 4 жыл бұрын

You're very welcome!

@enricofustinoni5125 4 жыл бұрын

Great video as usual. Thanks!

@AndreasSpiess 4 жыл бұрын

You are welcome!

@freespam9236 4 жыл бұрын

i hope your part comes faster than my random electronics ordered stuff on march 5th and still waiting 🙏

@AndreasSpiess 4 жыл бұрын

I also get the things ordered beginning of March :-(

@tommihommi1 4 жыл бұрын

meanwhile I have stuff lying around since march but I'm not allowed in the lab to solder and test it

4 жыл бұрын

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.