Thanks for the interesting video. I found your channel because of your very good QRP labs and FT817 content. Those are the radios I also use. I've been out of the hobby for decades but digital modes got me interested again. I'd not heard of that transceiver before. It's amazing how they can be so very cheap. Some are less than a fiver! Thanks again
Why divide by 400 ? I would expect 50 since the voltage is measured across a 50 ohm load. But then that would give 4W which I am sure is not correct. Also, the RMS value of the voltage would need to be used and not the peak value. Maybe that accounts for the use of 400.
The idea and explanation comes from this article by Hans Summers : qrp-labs.com/qcx/rfpower.html#:~:text=The%20voltage%20rating%20of%20your,the%20dummy%20load%20is%20fine.
Thank-you. I enjoy my Pixie converted to 20 meters. I have worked 35 States with my dipole.
Thanks for the interesting video. I found your channel because of your very good QRP labs and FT817 content. Those are the radios I also use. I've been out of the hobby for decades but digital modes got me interested again. I'd not heard of that transceiver before. It's amazing how they can be so very cheap. Some are less than a fiver! Thanks again
Glad you like the videos, Neil, thanks - 73 from Mort/G4BSK
Thank you for the video! Very informative!
Thank you! Great video.
👍Thanks for sharing. I shall listen out for you on my Pixie.
Thanks Steve - 7.1/7.2/7.23/7.3 are my crystals...73 from Mort/G4BSK
Hi. greeting from turkey, I saw your video while doing BFO research. 73
73 from England - hope your projects go well!
Why divide by 400 ? I would expect 50 since the voltage is measured across a 50 ohm load. But then that would give 4W which I am sure is not correct. Also, the RMS value of the voltage would need to be used and not the peak value. Maybe that accounts for the use of 400.
The idea and explanation comes from this article by Hans Summers : qrp-labs.com/qcx/rfpower.html#:~:text=The%20voltage%20rating%20of%20your,the%20dummy%20load%20is%20fine.
Выходной транзистор наверное лучше на s8050 сделать.
How about trying a BFY51 or BD139? G7VFY
I've tried a few different transistors - I expect I'll get to those in due course - thanks for the suggestion, 73 from Mort/G4BSK
Voltage in, and antenna?
12v EFHW