Thanks for the "new" channel ...subscribed ... but do not forget that -according to your own definition- to _qualify_ we already passed an exam before we _legally_ can *follow* this channel
As telecom (GSM) engineer we were first limited to 35km cell radius on 2G. Then they came with the idea of extending it to 70km (using 2 time slots). Then Ericsson came with 100km radius. All of that with maximum 33dBm (2W) of mobile phone power. Now, with 5G we are at... 100m cell radius. A circle of laugh ;-)
@@HB9BLA that comes from Timing Advance and the length of the frame. So to use longer range they developed using 2 time slots to increase the range (but the capacity of 1 channel went down from 8 Full Rate time slots to 4). Anyway, 2G is a history. Btw from 3G onwards wise brains developed CDMA ( code division multiple access): all transmitters use the same frequency but each communication channel (peer-to-peer) is coded with the unique code so I know you talk only to me even though I can hear everybody on this disco)
@@zyghom Yes, speed of light still is slow in this respect... BTW I mentioned the high bandwidth because of the short distance and the lots of antennas with small cells...
The best U.I. ever (Useful & Interesting). "Quote: If you are not willing to learn no one can help you. If you are determined to learn, no one can stop you". I'm listening :)
Anything antenna related I suggest to watch andrew mcneil's channel. He explaines the theory as well as build and test the different antennas. Very much recommended. And ofcourse thank you Andreas for your time and effort to bring us a new channel.
I am so happy to see that you will be making videos with an emphasis on RF. There is in my opinion too few Amateur Operators which do any home brew of their equipment. This however is why I got interested in amateur radio. I hope your entertaining videos will spark an interest for many other hams to explore making their own equipment. 73 N5BOC
Simply said: There are builders and communicators HAMs. I belong more to the builders ;-) i hope like you to attract younger people because I will focus on newer technology. That is why I choose wireless and not HAM Radio.
Whether you like to chat, or you like experimenting with different technologies and techniques, I throughly recommend getting your amateur licence. You’ll learn a load!
The sensor / ISM stuff will stay on the main channel (probably cross-posted to this channel). Here I will focus on HAM related stuff (sensors and gateways are still somehow illegal for HAMS in most countries because of non-manned and encrypted)
I always listen twice while operating on hf for HB9 callsigns. Great idea to create this channel. I'm following your primary since years and I'll follow the new one too. Vy 73 de DG8WA
Thank you for sharing your knowledge and for creating a separate channel for Amateurs. One of the things that makes your channels stand out for me is the focus on how the equipment works instead of high level reviews of manufactured equipment. I'm excited to apply this to my own projects. 73 KO4UXG
Many thanks Andreas, this channel is much welcomed and definitely subscribed! Inspired by your great content got licenced last summer and it's been an absolute blast! 73 de OH2CHY Harri
Thanks! Great Idea to separate all the radio stuff out from the main channel especially for people that have no idea of the rules in their local country building stuff that could get them into trouble. 73, KC1PAN
@@HB9BLA Thanks for the response. I hope that we (subscribers of this channel) can do something together, maybe like a group project or a simultanious build or a net or at least some live streams.
@@ImnotChuck. We will see. For the moment I do not live streams and it would take a lot to convince me to do it :-( But common projects are on my list. Also, collaborations with other CZcamsrs if they are interested.
Idea for next video about modulation. Why for example AM modulation gets sidebands and not just variation of carrier frequency amplitude. I found out aplitude-time graph of AM signal in many textbooks misleading. So maybe some words how mixers work. How modulation and demodulation of different modulations is done. IF frequincies etc. Otherwise congrats on new channel. I bet we will be all able to learn something new even if we already have a license.
We for sure will talk about mixers. But maybe not the ones most people think of... We probably will not see a lot of Superheterodyne Receivers on this channel. There are other good channels for analog stuff. I try to give it a twist to the newer SDR technology.
There is interesting project by DL2MAN that figured out how to create SSB transceiver with Arduino (ATMega328p) and Si5361a. A SDR style transceiver. It's interesting that nowadays you can convert most of analog electronic signal parts into software code.
Hello Andreas, One question. Why does the bandwidth limit the amount of data per time? Couldn't you just pack the data much closer together so that more data fits in the same bandwidth? Is this a hardware limitation we are currently driving? What defines how many bits fit in 1Mhz? Thank you for this Channel. Regards Sergej
It is the other way round: The bandwidth is an effect of the data rate. The relationship is physics and cannot be changed. It just can be optimized. You can Google Shannon or Nyquist if you are brave ;-)
Bandwidth is defined as bits per second I believe so if you were to change the amount of data you send over a period of time you are actually changing how fast you are communicating and this changing it’s bandwidth
I would like to add on a clarification, bandwidth is defined as the maximum speed the data can be transferred but it does not mean it’s the speed of the transfer currently. Think of it like a pipe, bandwidth is the maximum amount of water you can push through the pipe at a standard pressure (pressures change so ignore that for this example)
@@bestcreations4703 I do not know if this is true. If it is, it is very simplified. I am more interested in understanding the physics behind it. If you take an Ethernet cable as an example. A CAT 5 cable runs with 100MHz and transmits 100mbit. CAT5e also uses 100MHz and transmitted 1Gbit for a long time, now even 2.5Gbit and 5Gbit. Yes, the protocols are getting better, but the bandwidth cannot be increased by a factor of 50just by protocol, if there is a physical limit. How is definition for bits per Mhz.
Sir, I saw in the video you posted on your main channel that your keying out of the background for this channels profile image of you was rough around the edge, I have taken professional image editing classes and would be happy to touch it up since I know you use your picture in your thumbnails. I’d do it for free so long as I had some way to put it on my resume just because I want everything I can get lol. Let me know and I’d send an email to you so we can talk more in depth. Cheers.
@@HB9BLA thank you! Kinda bummed to see that tests are still held in person. Oh well, i have to learn stuff first anyway, i hope being an Elektroniker für Automatisierungstechnik (such a long and pretentious name) will help me atleast abit when studying for the technical part
I love that you used our Kenwood chart! It is because of YOUR various videos through the years that I am privileged to support their products!
:-)
Thanks for the "new" channel ...subscribed ... but do not forget that -according to your own definition- to _qualify_ we already passed an exam before we _legally_ can *follow* this channel
Or you plan to get one ;-)
Thank you Andreas, you made me think of some concepts from a different angle!
Cool. Glad to read that!
As telecom (GSM) engineer we were first limited to 35km cell radius on 2G. Then they came with the idea of extending it to 70km (using 2 time slots). Then Ericsson came with 100km radius. All of that with maximum 33dBm (2W) of mobile phone power. Now, with 5G we are at... 100m cell radius. A circle of laugh ;-)
But 4/5G of course, with a little higher bandwidth ;-) BTW: I did not know that 2G had such a range!
@@HB9BLA that comes from Timing Advance and the length of the frame. So to use longer range they developed using 2 time slots to increase the range (but the capacity of 1 channel went down from 8 Full Rate time slots to 4). Anyway, 2G is a history. Btw from 3G onwards wise brains developed CDMA ( code division multiple access): all transmitters use the same frequency but each communication channel (peer-to-peer) is coded with the unique code so I know you talk only to me even though I can hear everybody on this disco)
@@zyghom Yes, speed of light still is slow in this respect... BTW I mentioned the high bandwidth because of the short distance and the lots of antennas with small cells...
NTIA frequencies got fed into the chipper and this is what came out.
The best U.I. ever (Useful & Interesting). "Quote: If you are not willing to learn no one can help you. If you are determined to learn, no one can stop you". I'm listening :)
Well said!
Thank you Sir from Sean ZS5X Pinetown South Africa 73
You are welcome. 73
Thank you for this new channel... the subject is one of my favorite. Keep going.
Glad you enjoy it!
Anything antenna related I suggest to watch andrew mcneil's channel. He explaines the theory as well as build and test the different antennas. Very much recommended. And ofcourse thank you Andreas for your time and effort to bring us a new channel.
I agree and am a longtime subscriber. Unfortunately he features mainly Wi-Fi antennas :-(
Thank you so much! May you have good health and live many more years. Your explanation is very good!
Thank you!
Just found your new channel. Congratulations on branching out into radio specific output! 73.
Thank you!
I am so happy to see that you will be making videos with an emphasis on RF. There is in my opinion too few Amateur Operators which do any home brew of their equipment. This however is why I got interested in amateur radio. I hope your entertaining videos will spark an interest for many other hams to explore making their own equipment.
73 N5BOC
Simply said: There are builders and communicators HAMs. I belong more to the builders ;-) i hope like you to attract younger people because I will focus on newer technology. That is why I choose wireless and not HAM Radio.
Thanks for making this channel! I am thinking of getting a license and these videos help a lot.
Go for it! And come back to tell me!
Whether you like to chat, or you like experimenting with different technologies and techniques, I throughly recommend getting your amateur licence. You’ll learn a load!
As usual great content Andreas
Thank you!
Greetings! So happy to see you branch out on Wireless Communication with Sensors (and more)... 73 de kc0fvm k
The sensor / ISM stuff will stay on the main channel (probably cross-posted to this channel). Here I will focus on HAM related stuff (sensors and gateways are still somehow illegal for HAMS in most countries because of non-manned and encrypted)
Great videos again Andreas! Now a special channel for RF!? Now you will not have time to sleep! ha ha ha Thank you again!
We will see how often I will publish on the new channel. For sure not too frequently and maybe in a different quality.
@@HB9BLA From you Andreas I see no problem with "any quality"!
Hi Andreas, very nice idea to create this new channel. Thanks for sharing your knowledge.
My pleasure!
thanks for the nice summary!
Glad it was helpful!
I always listen twice while operating on hf for HB9 callsigns. Great idea to create this channel. I'm following your primary since years and I'll follow the new one too. Vy 73 de DG8WA
You probably will not hear me a lot on SSB. For the moment I am mainly on FT8 and DMR and hope to get back to CW...
Interested and pondering some special wireless projects and need more information. This is a nice introduction.
Glad it was helpful!
Thanks for explaining such interesting topics in a concise manner. Kudos!
Glad it was helpful!
Happy Birthday to your new channel. Looking forward to learn more on RF technology. With best wishes and great regards VU2RRO (retired).
I hope we can do some interesting stuff on this channel. 73
Thank you for sharing your knowledge and for creating a separate channel for Amateurs. One of the things that makes your channels stand out for me is the focus on how the equipment works instead of high level reviews of manufactured equipment. I'm excited to apply this to my own projects. 73 KO4UXG
Indeed, this channel is more for the builders and experimenters.
Nice new Channel thanks Andreas
Welcome!
You are a big man!!! 😘
Thank you!
great channel
Thank you!
Many thanks Andreas, this channel is much welcomed and definitely subscribed! Inspired by your great content got licenced last summer and it's been an absolute blast! 73 de OH2CHY Harri
Welcome aboard this wonderful hobby!
Thanks my friend for sharing good video so beautiful
Thanks for visiting
Super Beitrag, danke dir! 73 von HB9TIA!
Danke! 73
Thanks! Great Idea to separate all the radio stuff out from the main channel especially for people that have no idea of the rules in their local country building stuff that could get them into trouble. 73, KC1PAN
That is why I only use ISM bands for my main channel... 73
This will be fun! Thanks for all you do! 73, KC7MRD
I hope so! 73 de HB9BLA
Good for you.. knowledge should be shared.. great show by the way..
Glad you enjoyed it!
@@HB9BLA ;-)
73 de KJ4FX who just subscribed. I have been a licensed ham for more than 50 years.
That is a long time! I got my license also in the 1970s but was not active for 30 years... 73 de HB9BLA
@@HB9BLA Thanks for the response. I hope that we (subscribers of this channel) can do something together, maybe like a group project or a simultanious build or a net or at least some live streams.
@@ImnotChuck. We will see. For the moment I do not live streams and it would take a lot to convince me to do it :-( But common projects are on my list. Also, collaborations with other CZcamsrs if they are interested.
Put me on the "interested" list.
Cool!
Idea for next video about modulation. Why for example AM modulation gets sidebands and not just variation of carrier frequency amplitude. I found out aplitude-time graph of AM signal in many textbooks misleading. So maybe some words how mixers work. How modulation and demodulation of different modulations is done. IF frequincies etc. Otherwise congrats on new channel. I bet we will be all able to learn something new even if we already have a license.
We for sure will talk about mixers. But maybe not the ones most people think of... We probably will not see a lot of Superheterodyne Receivers on this channel. There are other good channels for analog stuff. I try to give it a twist to the newer SDR technology.
There is interesting project by DL2MAN that figured out how to create SSB transceiver with Arduino (ATMega328p) and Si5361a. A SDR style transceiver. It's interesting that nowadays you can convert most of analog electronic signal parts into software code.
@@EarthWalkerMan You are right. Currently, I have two transceiver kits from QRP-Labs on the bench which have the same roots.
Hello Andreas,
One question. Why does the bandwidth limit the amount of data per time? Couldn't you just pack the data much closer together so that more data fits in the same bandwidth? Is this a hardware limitation we are currently driving? What defines how many bits fit in 1Mhz?
Thank you for this Channel.
Regards
Sergej
It is the other way round: The bandwidth is an effect of the data rate. The relationship is physics and cannot be changed. It just can be optimized. You can Google Shannon or Nyquist if you are brave ;-)
Bandwidth is defined as bits per second I believe so if you were to change the amount of data you send over a period of time you are actually changing how fast you are communicating and this changing it’s bandwidth
I would like to add on a clarification, bandwidth is defined as the maximum speed the data can be transferred but it does not mean it’s the speed of the transfer currently. Think of it like a pipe, bandwidth is the maximum amount of water you can push through the pipe at a standard pressure (pressures change so ignore that for this example)
@@bestcreations4703 I do not know if this is true. If it is, it is very simplified. I am more interested in understanding the physics behind it. If you take an Ethernet cable as an example. A CAT 5 cable runs with 100MHz and transmits 100mbit. CAT5e also uses 100MHz and transmitted 1Gbit for a long time, now even 2.5Gbit and 5Gbit. Yes, the protocols are getting better, but the bandwidth cannot be increased by a factor of 50just by protocol, if there is a physical limit. How is definition for bits per Mhz.
Turn the bell on everyone.
:-)
Am I in the front row yet!!!
Welcome!
Great name for the channel! 🙂 👍 73! DE1CTL
Glad you like it!
Sir, I saw in the video you posted on your main channel that your keying out of the background for this channels profile image of you was rough around the edge, I have taken professional image editing classes and would be happy to touch it up since I know you use your picture in your thumbnails. I’d do it for free so long as I had some way to put it on my resume just because I want everything I can get lol. Let me know and I’d send an email to you so we can talk more in depth. Cheers.
Great! Just tell me where I can send the picture...
can someone give a clear explanation about efficient radix-8 fft for microcontroller??
No me. I do not know
😰
Do you maybe have any tips on getting a license in germany?
You find a good page if you Google "Amateurfunkausbildung darc"
@@HB9BLA thank you! Kinda bummed to see that tests are still held in person. Oh well, i have to learn stuff first anyway, i hope being an Elektroniker für Automatisierungstechnik (such a long and pretentious name) will help me atleast abit when studying for the technical part
Good luck, then!
I'm here mate. VK3BUT.
73 de HB9BLA. Did not know you are a HAM
@@HB9BLA Was a Radio Mechanic in the Military for 29 years, then got a job where the bosses where Hams. Got my licence pretty easy.
Hello!
Hello! and 73
yay G7wbd :)
73 de HB9BLA
Love the new channel, regards Steve_w VK2SHW
Welcome aboard! 73