#338

[@bansci]

Nice video! Leo Bodnar makes some really cool stuff which is why I was very surprised to see the distortion in the "square wave" GPSDO output. Was this due to improper termination? I can see you have the scope in 1:1 mode, but is it terminated into 50 Ohm like the GPSDO?

[@AndreasSpiess]

You are right. I forgot to switch to 50 Ohms. At 50 ohms it is much more a square! Thanks for the reminder. I will pin the comment that everybody sees it.

[@WacKEDmaN]

Leo is even well known in the DIY sim rig/sim racing community for some of his builds around force feedback...he seems to know what hes doing!

[@Manawyrm]

@@AndreasSpiess I don't think you'll have killed the Pluto. You can try to reflash the firmware via DFU and also reset the environment for the bootloader. This should fix any software-related issues.

[@AndreasSpiess]

@Tobias: Thanks for the tip. I will try it and cross my fingers...

[@JohnTarbox]

What I particularly love about this series is that It has a greater level of sophistication as compared to your short videos.

[@AndreasSpiess]

These videos were not planned because they are not „mainstream“. Most of my viewers are not too interested in this stuff... But the ones interested seem Lo like it. Thank you.

[@santopino2546]

@@AndreasSpiess I'm not really interested either, I enjoy listening to the adventure you go through to get your results.

[@PHamster]

Messages: Andreas to Antarctica: Hello there! I'm the guy from KZbin with a swiss accent Antarctica to Andreas: Send more food!!!

[@AndreasSpiess]

Or more oil for heating ;-)

[@0dium.]

@@AndreasSpiess the have plenty of penguin fat to burn torches ;)

[@keithroberts5946]

@@0dium. poor penguins

[@PIXscotland]

Been away from radio for 10 years but when you started the Morse I was taken back decoding it all. Simple stuff, but an interesting diversion for my brain!

[@AndreasSpiess]

Definitively a good exercise!

[@bub_sy]

That lil pointer hand cracks me up every time, its very Monty python.

[@AndreasSpiess]

Thank you!

[@nutsnproud6932]

Andreas this gave me the inspiration to fire up my transceiver and my paddle for the first time in months. 73 from France.

[@AndreasSpiess]

Very good! I hope you enjoyed it.

[@nutsnproud6932]

@@AndreasSpiess Yes I had many CW QSOs on 40 and 2 metres!

[@marksterling8286]

A wonderful video very educational and entertaining at the same time. I and my son really enjoy watching. Thank you

[@AndreasSpiess]

Glad you and you son enjoyed it!

[@Uncle-Duncan-Shack]

Another quality transmission which made it past my channel notch filter. Oh, and congratulations on the milestone, with appropriate support and rewards. The wood board system is approved, it's a good system for working orderly and presents very well on this Swiss Tv channel. Best regards, Duncan, RSA.

[@AndreasSpiess]

Thank you! The "Woodboard" is also good because my lab is in the basement and the antenna 3 stories higher...

[@diggleboy]

Nice gift from your wife! Looking forward to see you hit that satellite very soon. Hope your ADALM - PLUTO is okay to help make it happen. So satisfying to solve RF challenges on your own at the expense of a few components, know-how and your time.

[@AndreasSpiess]

I always thought I will kill the power amplifier first ;-)

[@trentbrown3714]

Andreas - another Great video (and I really like your keyer!)

[@AndreasSpiess]

Me too!

[@godfather00cz]

i like your micro/raspi vidz (like the ssd booting tutorial), but this series is absolutely awesome!!! fantastic idea for a project and thanks to you i finally understand the PLL concept... please more of these bonuses!

[@AndreasSpiess]

Glad you like it! Not easy to produce 2 quality videos a week. I still have a daytime job ;-)

[@santopino2546]

"If you were able to do it once, you do not loose it". I found this to be true, about 10 years ago, I used to play organ until 1978, left music for over 30 years, and then I got myself a second hand Yamaha Tyros keyboard. I wasn't able to remember anything about the song Tico Tico, I then put on the drum set and practically I played nearly 90% correct through my subconscious, there was no other possibility, because the song is too too fast to give you time to think what to do.

[@AndreasSpiess]

That's it. It has to be the subconscious also here. Also way too fast.

[@mahudson3547]

The journey is very interesting. Would have been nice to see the spectrum after the filter - the scope always looks better! But it looks like the third harmonic should be -44db which is respectable. Your bicycle doesn’t sound too rusty! Thanks for the great series

[@AndreasSpiess]

The error rate is still not acceptable. But I manage around 19 wpm in transmit. Receive a little slower. But without a lot of practicing.

[@MajdMazin]

I always love your videos, and you are an inspiration. I however despise the tiny plastic hand. It is truly in the uncanny valley for me. I would love to see a thick thumb covering most of the delicate small equipment or a tiny rod or dowel. If you have gotten past my hand rant, I have to say that you have been super informative and helpful in my journey of learning more about microcontrollers and sensors, and definitely more precise and in depth than most. Thank you for all the effort that you put in these videos. It is not lost on us.

[@AndreasSpiess]

Unfortunately, up till now, you are the only viewer complaining about the hand. I get lots and lots of positive comments. :-(

[@MajdMazin]

@@AndreasSpiess I am just being nit- picky. Do not be concerned with me at all. Thank you for all the videos. Looking forward for more.

[@keithroberts5946]

I remember doing electronics course many years ago when had to draw a sine wave and add the harmonics to make it into a square wave - local technical college in 1979/80 or so- odd what comes back in memories

[@AndreasSpiess]

So you went in the opposite direction. It is more complicated...

[@p1366]

Really enjoying your Ham Radio videos..inspired me to mix IOT and Ham Radio to with LoRa APRS....and I see someone has already pushed LoRa Signals through that Satellite.. 73.

[@AndreasSpiess]

I am not sure if LoRa would be acceptable. But I have another satellite using LoRa... And a next is about to be launched,

[@p1366]

@@AndreasSpiess aprs.at/index.php/2020/02/16/lora-aprs-via-qo-100-oe3dmb/

[@AndreasSpiess]

Very interesting! Thank you for the link. The question remains if of how LoRa is acceptable on HAM bands because usually it is encrypted.

[@simoncollins6650]

A very nice key great to see the project progress

[@AndreasSpiess]

Indeed! I like it, too.

[@catcam]

Thanks dear Andreas for this great bonus !!!

[@AndreasSpiess]

My pleasure!

[@WacKEDmaN]

Andreas' fingers move so quick on the morse keyer ya cant even see them move! amazing! LOL nice stuff Andreas.. project is coming along nicely

[@muctop17]

It's a paddle keyer: left 'didhs' right 'dahs' no need for speed!

[@AndreasSpiess]

No need for speed, but for timing ;-)

[@pcost]

Hello Mr. Spiess!! It would be extremely interesting if you could do a video about your Morse device! Teaching us how to use Morse, references for study and curiosities from your time as a Red Cross telegrapher. I love Morse code but I never found really good material nor met someone who practice that to learn from, and I think most of your subscribers would also find useful somehow. You are great! Thank you.

[@AndreasSpiess]

There are quite a few videos about learning Morse. BTW: My first videos were on "how to build a Morse Trainer"...

[@colindevaux4476]

you have a good wife ;)

[@AndreasSpiess]

True!

[@yubi3133]

His wife has a wonderful andreas ;)

[@0dium.]

@@yubi3133 maybe she tells him : talk to me here in the kitchen instead of some distant Antarctica nobody :)

[@dijoxx]

This is truly inspirational. Thank you!

[@AndreasSpiess]

Glad you enjoyed it!

[@electronic7979]

Very good 👍

[@AndreasSpiess]

Thank you 👍

[@zolatanaffa87]

very beautiful gift! spectacular realization! and of course very interesting video! bye! see you soon on next episode!

[@AndreasSpiess]

The Begali keyer was on my bucket list since a long time...

[@zolatanaffa87]

@@AndreasSpiess in short, a forbidden dream :-) You can see that it is a very high-end product ... have fun! But don't forget to make some videos between one QSO and another. LOL

[@andrewbeasley]

Beautiful key set - what a gift. I gave up studying for my UK ham license when they wanted me to learn morse and would not accept my TRS-80 program to do it for me 😂

[@AndreasSpiess]

I made my first Morse Trainer in assembler on a TRS-80. But for an 8085. And sold a few of them to the Swiss Army...

[@lmaoroflcopter]

Try again :) these days Morse is not a requirement to pass. You have to appreciate it (e.g. you listen to a Morse QSO) but there are no marks involved. (I did exactly the same. Gave up doing my novice licence because of Morse, but I'm now an intermediate licence holder.)

[@eeprom34]

Congratulation Andreas, vous nous offrez d’excellents partages, ont vous offrent des milliers de "Like" et votre charmante épouse vous offre un superbe cadeaux, quand je reçois une notification youtube de votre chanel, c'est pour moi un CADEAUX Merci Andreas pour cette richesse que vous nous offrez, c'est un grand cadeaux que vous nous distribuez toute l'année.

[@AndreasSpiess]

Merci pour tes belles paroles. Je suis content que tu aimie le contenu de la chaîne! Et oui, j'ai une merveilleuse épouse. Désolé, mon français est également rouillé

[@vincentnonnenmacher9352]

Nice ! Could you elaborate a little on next episodes how those passive components for the filter affect the oscillator precision (in term of ppm for temperature coefficient) at filter output ?

[@AndreasSpiess]

They should not if I use a GPSDO.

[@vincentnonnenmacher3562]

@@AndreasSpiess not sure I understand your comment properly. Do you mean that if you are using in 'front' of a test equipment, they will not affect the frequency or add any jitter, unless its make the signal 'too distorted' to trigger easily on ?

[@mitfreundlichengrussen1234]

Perfect as always - thank you.

[@AndreasSpiess]

You are welcome!

[@Yuēhàn24]

Could you do a review on the Adalm Pluto, Cheers

[@AndreasSpiess]

This is too special for this channel. Not interesting for most of the viewers. The QO-100 is already very off-topic.

[@M0JHN]

We need more series like these please!

[@AndreasSpiess]

Unfortunately it does not get the needed attention in number of views :-(

[@M0JHN]

It’s a pitty I’m still verey new to a mature radio and theirs so many experiments I want to do but I need a few years to build up the equipment. Thank you the videos we all apreciate the effort and your explanations are extremely well done and easy to understand. If you ever need a lab assistant Let me know.

[@wilfredswinkels]

Congrats on your fantastic keyer!

[@AndreasSpiess]

Thank you!

[@PhG1961]

Nice and well explained. I almost forgot to comment on this video. The morse key looks impressive.... how thoughtfull of your wife ! Maybe start dreaming and make suggestions for the next threshold.... 300K subscribers !

[@AndreasSpiess]

I will tell her that she can start to save ;-)

[@MatthewN8OHU]

An interesting video, and one that I would probably use as a reference to build my own system if the US had a similar geosynchronous satellite available.

[@AndreasSpiess]

You should have some LEO satellites. There, the effort, of course, is lower to get a conversation. And maybe Elon will be generous in the future...

[@lyrooo326]

That Morse code machine looks awesome.

[@AndreasSpiess]

And it is...

[@daveys]

Very interesting! Only found your channel this morning but already a fan. 73 de G2DS.

[@AndreasSpiess]

Welcome to the channel! 73 de HB9BLA

[@ericon.7015]

Oh my!!! You sending morse codes just remembering the codes! Amazing!

[@AndreasSpiess]

You have to understand Morse like voice. Otherwise you do not get to two letters per second...

[@plemli]

Would a resonant series and/or parallel LC not be a simpler and way more selective filter ? Begali keyers sure are nice and the more basic editions not too expensive for the bling factor.

[@AndreasSpiess]

1. It depends what you want. You can have simpler filters, but their performance is also lower. 2. True. I wanted this keyer also because of the "bling factor" ;-) Morse is part of my own history, and I have other simpler keyers

[@McTroyd]

I'd argue the series is *very* related to your main channel topic. Theory doesn't always make sense without application. This is definitely application. Nice keyer, too! How does it work?

[@AndreasSpiess]

The Keyes works very well. But it is above my capabilities ;-)

[@Subin_Roy]

Nice touch for the final Bye :)

[@AndreasSpiess]

:-) Thank you!

[@glennstasse5698]

I always wondered if there were any people left who could transmit or decode Morse code. Very cool.

[@AndreasSpiess]

Many young people learn it also today because it is cool!

[@thomasschmidt5934]

A great project, and super videos....can't wait to see the next one ! 73s de Thomas F8DBY PS: I'm also taking up Morse code again, after a pause of nearly 20 years....loving it !

[@AndreasSpiess]

Thank you! An Morse is definitive worth the effort...

[@nashaut7635]

This series of videos have sparked my interest for RF again. Out of curiosity why didn't you opt for a tank (series or parallel RLC) circuit as you can achieve a quite good level of selectivity with the Q factor? I'm a teacher in electronics and recently had to thoroughly (to my level) investigate those kinds of circuits again and I must admit I appreciate them even more than before hence my question.

[@AndreasSpiess]

Here we do not need „ quite good“ as explained in my GPSDO video. Try to do the calculations, check the variability of the parts and their temperature stability and you should find out.

[@nirmalraj3603]

Hi Andreas, im from Tamil Nadu india. Its useful for me and my friends, thanks lot

[@AndreasSpiess]

You are welcome!

[@daveschwarz5279]

Is there a prebuilt transceiver for QO100.... I don’t have a lot of time to build ... nice Begali

[@AndreasSpiess]

I do not think so.

[@marcelbottcher9044]

I lost my abbilities in CW :( I've been one of the last Tastfunker in the german marine but nowadays it seems, that nothing has remained.

[@AndreasSpiess]

Bad luck :-( Here it came back quite fast.

[@enricofustinoni5125]

Great video as usual. Let us know about the Pluto...

[@AndreasSpiess]

Sure. It looks like it was not the last video in the series...

[@belenhedderich3330]

Just saw the video to look at your wife gift :) Congrats on both and 200K Subscribers keep the good work! Say Hi to Mishka ;)

[@AndreasSpiess]

Thank you! Will do!

[@AliSot2000]

How is your touch converted into a morse signal? I only know the system where you had to Morse using basically a tactile switch.

[@JimVanderveen]

The K3NG keyer generates tones based on the paddle inputs. The paddle is just a very, very expensive pair of SPST switches. The keyer is an Arduino-based piece of hardware that generates the “dits” and “dahs” according to which of the two paddles is pressed. See github.com/k3ng/k3ng_cw_keyer

[@AndreasSpiess]

@Jim: You forgot: and good looking switches;-)

[@JimVanderveen]

Indeed, @Andreas!

[@DrFrank-xj9bc]

Hello Andreas, I still do not understand, what the requirements for your 25MHz and 40MHz reference frequencies are, high uncertainty (exactly these frequencies to the nth digit), or stability, i.e. low short or medium term jitter? If latter is the case you were better off with XTAL oscillators, as these have the lowest jitter, but GPSDOs usually have relatively high jitter, only high longterm uncertainty. Maybe a schematic of your modulation methods would be helpful, or a description, which transmission method is used.

[@AndreasSpiess]

We want of course all three: Low jitter provided by a TCXO, high precision that we exactly hit the desired frequency, and longterm stability that we hit it next week, too. But of course, you can use very good TCXOs in both cases if you want. I always wanted to play with a GPSDO and here I have a good use case 😉

[@jmaguilarr]

Hi Andreas , can you desing a 27 mhz remote control for RC toys?, its very little informatión in internet in this frecuency range, thx

[@AndreasSpiess]

These days most RC toys use 2.4GHz RCs. No need for such an old thing anymore.

[@santorcuato]

What a journey!

[@AndreasSpiess]

I never said it is easy ;-)

[@frollard]

Constantly in trouble trying to justify buying cool equipment to wife... Wife buys you the coolest keyer I've seen worth mad cash...I like it.

[@AndreasSpiess]

Selection criteria are important ;-)

[@fabhorvi7236]

What's happened to the pluto ? Have you made a wrong connection ? Pluto receiver can support 2.5dBm max input power or 422mV peak, Can the signal from the lnb exceed this value?

[@AndreasSpiess]

It wa not the RX input, I think. Maybe it was the injection of the reference signal. I still have some hope...

[@fabhorvi7236]

@@AndreasSpiess I cross my fingers so that the pluto works again! Why are you considering inserting an attenuator after the tee bias, the signal is so strong?

[@AndreasSpiess]

Yes.

[@scrapwomblecreatives6944]

nice work

[@AndreasSpiess]

Thank you!

[@Marci124]

The info box at 2:00 seems to be missing.

[@AndreasSpiess]

Added. Thanks!

[@PeterIllmayer]

The keyer is fantastic 👍👍de VK8PI

[@AndreasSpiess]

Definitively. And extremely heavy.

[@isidoromaich7226]

hmm somewhere along the video some neighbor was playing Kraftwerk's Radioaktivität

[@AndreasSpiess]

Possible. I did not recognize it.

[@peerappel2012]

Thank you again for the interesting video :-)

[@AndreasSpiess]

Glad you like it!

[@nopo_b3645]

Nice tool for filters :-)

[@AndreasSpiess]

Yes, very handy!

[@soulrobotics]

Interesting! Left handed, CQ, CQ.... Hahaha

[@AndreasSpiess]

Right-handed is more complicated (at least for me) ;-)

[@blackkissi]

I had to do some googling: "Morse code was used as an international standard for maritime distress until 1999 when it was replaced by the Global Maritime Distress and Safety System." I thought it was abandoned long before that.

[@AndreasSpiess]

Commercially it was abandoned earlier and first replaced by RTTY. The red cross, for example used it also till the late 80s because it was an international standard and the red cross had to be neutral.

[@Jayf1981]

If the electric current flows in and out of the S. pole, can electrical signals penetrate them?

[@AndreasSpiess]

What is an S pole?

[@Jayf1981]

@@AndreasSpiess South pole of the earth (it is in Antarctica, right?) is this a dumb question because honestly, I don't know what you are talking about most of the time 🤔

[@MarianKeller]

@@Jayf1981 Nothing to do with the magnetic poles of the earth. He was talking about S-parameters (en.wikipedia.org/wiki/Scattering_parameters).

[@AndreasSpiess]

@Gerald: Radio waves fortunately travel also there. As well as to Mars and beyond...

[@EnUsUserScreenname]

Your wife rocks!

[@AndreasSpiess]

I will tell her!

[@magnusberntsson629]

Finally a new video. =)

[@meinsda5983]

Andreas can you make a morse course for us? ;)

[@AndreasSpiess]

No need. There are a few around. And most is anyway practicing. For listening my first videos were about a Morse trainer. If you are interested I can send you the version I work with on an ESP32. Bit not too much docummented :-(

[@MrAbrandao]

what about the GPSdo link?

[@AndreasSpiess]

I had it in the GPSDO video. Added it here, too now. Thanks.

[@LawpickingLocksmith]

Hoping for good wx!

[@AndreasSpiess]

The weather is good now. But I killed the PA and have to wait for a new one:-(

[@mrksaccount123]

I thought maybe you had said you were divorced. You were talking about priorities in one of your videos. Don’t get me wrong, I am happy for you having a great wife, but just curious.

[@jamesmichener7526]

Good wife getting you a Begali.....

[@AndreasSpiess]

Indeed!

[@Iceteavanill]

Hmm. You forgot that your taskbar was still in the video while recording it. So according to it, you just needed 1h30 to cut and upload it until i can view it. Impressive.

[@AndreasSpiess]

This is probably just the „Endspurt“ ... It took much longer, unfortunately.

[@pulesjet]

Square waves are made up of a Infinite number of ODD harmonics.

[@AndreasSpiess]

That is why I said „sqarewavish“, not square wave.

[@kwazar6725]

Cool

[@AndreasSpiess]

:-)

[@darktherapy]

99 problems but the wife ain’t one

[@AndreasSpiess]

True!

[@johnwilson3918]

Hmmm.. I was a bit dissatisfied with the ending.. Your 'BYE' was a bit monotonic.

[@DavidMG99]

👍

[@jesuscarrillo3007]

Great series! I honestly can't wait for the next video!, 73s XE1AZJ

[@AndreasSpiess]

73 de HB9BLA

[@jarchdm]

I was looking for some of your lora videos when i discovered i had been unsubscribed from your channel. i have no idea how that happened , i certainly didn't do it. Anyone else getting unsubscribed ?

[@AndreasSpiess]

Another viewer reported the same.

[@neddyladdy]

Wouldn't it be quicker and far cheaper to simply write a letter ?

[@AndreasSpiess]

Of course. And more romantic. too ;-)

[@neddyladdy]

@@AndreasSpiess Oh, never thought of that, you're right of course. I always wanted to be romantic with my big hairy and, ham fisted colleagues.

[@petergplus6667]

I thought you said you kind of got divorced in a talk video???

[@AndreasSpiess]

No no. Ice divorced is enough!

[@pedroramirez5905]

Hi Andreas

[@AndreasSpiess]

:-)

[@MeisterQ]

Oh did they really put "Gülle" infront of your house on that big field of grass? Poor you

[@AndreasSpiess]

I live on the country side...

[@MeisterQ]

@@AndreasSpiess Me too. Every day they put Gülle on the fields.

[@EvileDik]

I do not like to go outside with my delicate equipment...*giggle*.. I need to grow up.

[@AndreasSpiess]

You forgot the rain ;-)

[@Electronieks]

i sit in the first row !!!

[@AndreasSpiess]

Great! Thank you.

[@jmaguilarr]

My uncle work at a telegraph

[@AndreasSpiess]

So he also knowns Morse, I assume

[@NoviSavvy]

73 de UN6GSV

[@AndreasSpiess]

73 de HB9BLA

[@coldfinger459sub0]

Your videos are always interesting and inspiring even though their way over my pay grade.

[@AndreasSpiess]

Thank you!