with these videos sir history is written a greek radio amateur is behind this message is fully understood this work you are doing keep up the good work
Fantastic explanation is a topic that no one explains on RUclips and if it does, it does so in a very complex way that we radio amateurs cannot understand Thank you very much, greetings from Spain
Thank you. After a month trying to change a Band pass filter i saw in another video, where the autor showed an LCSpice simulation of his filter but.... without sucess, in 30 mins of watching your video i made it. Once again thank you for sharing your knowledge. 73's
At min. 28:51 you meant a 1:2 ratio isn'it (instead of 2:1 what you said) Because it is 10uH PRI and 20uH SEC? I watched the video careffully and learned a lot from it. Thank you so much! I am doing live in LTSpice all your demo now.
Με αυτά τα βίντεο κύριε γράφεται η ιστορία ένας έλληνας ράδιο ερασιτέχνης είναι πίσω από αυτό το μήνυμα είναι πλήρης κατανοητό αυτό το έργο που κάνετε συνεχίστε να είστε καλά
@@rfmanchannel6915 Since the inductance is proportional to the turns ratio squared, the 20uH:10uH inductance ratio is equal to a turns ratio of root(2). Then, since the impedance ratio is equal to the turns ratio squared, root(2) squared is 2, thus transforming 100 ohms to 50 ohms, or 25 ohms to 50 ohms. It's intuitive when the ratio is 2, but when you require some oddball number for an impedance ratio, it's easier to do the math.
Hello, my name is Sam. I designed a HF transmitter circuit. And I have a problem with the antenna that I explained in a video. Please let me know if you have a email address to send it to you. thank you Best regards
with these videos sir history is written a greek radio amateur is behind this message is fully understood this work you are doing keep up the good work
Very good, looking forward to the next video.
Great video , looking forward to the rest of the series ..
Thanks for your feedback!! RF Man
Very well explained! Thanks.
Fantastic explanation is a topic that no one explains on RUclips and if it does, it does so in a very complex way that we radio amateurs cannot understand
Thank you very much, greetings from Spain
I'm happy you found this helpful! RF Man
Thank you. After a month trying to change a Band pass filter i saw in another video, where the autor showed an LCSpice simulation of his filter but.... without sucess, in 30 mins of watching your video i made it. Once again thank you for sharing your knowledge. 73's
Today's Elec. engineering students totally lucky than us, we were not 30 years ago and you are growing this help with gorgeous explanation. 73's
Very nice demonstration, thanks a lot.
Good job RF man.
Thanks for you comment!! RF Man
It is really helpful for beginners, very clear explanation.
Excellent explanation ... Thank you.
this is very good video, explanation and direction are easy to follow. Would it be possible to screen record your simulation in the future? God bless
At min. 28:51 you meant a 1:2 ratio isn'it (instead of 2:1 what you said) Because it is 10uH PRI and 20uH SEC? I watched the video careffully and learned a lot from it. Thank you so much! I am doing live in LTSpice all your demo now.
Thanks 😁
This is a great series of videos! Would you be willing to share the LTSpice file with all the components?
Thank you
Με αυτά τα βίντεο κύριε γράφεται η ιστορία ένας έλληνας ράδιο ερασιτέχνης είναι πίσω από αυτό το μήνυμα είναι πλήρης κατανοητό αυτό το έργο που κάνετε συνεχίστε να είστε καλά
The inductance is proportional to the square of the number of turns.
Yes. Also, the impedance ratio equals the number of turns squared or the square root of the impedance ratio equals the number of turns. Regards
@@rfmanchannel6915 Since the inductance is proportional to the turns ratio squared, the 20uH:10uH inductance ratio is equal to a turns ratio of root(2). Then, since the impedance ratio is equal to the turns ratio squared, root(2) squared is 2, thus transforming 100 ohms to 50 ohms, or 25 ohms to 50 ohms. It's intuitive when the ratio is 2, but when you require some oddball number for an impedance ratio, it's easier to do the math.
Minor comment - the newer versions of LT Space bury the "signal" into [Misc] subfolder. FYI only.
I've been using LT Spice for a while, but never new you can do this. Amazing and thank you. VA3GPJ
28:14. why missmatch i dont understand this point
might be little of subject but can u show how to match a vavle output ie pl519 which it says 2.5K to 50 ohms at 51 mhz
Sorry, I don't have the equipment or Spice models for this type of analysis. Regards RF Man
👍
You didn’t showed how to calculate transistors input impedance
Great FB thanks 73 HANZ YL3JD
What am I doing wrong
Hello, my name is Sam. I designed a HF transmitter circuit. And I have a problem with the antenna that I explained in a video.
Please let me know if you have a email address to send it to you.
thank you
Best regards
Please visit my web site at rflinear-amplifiers.com