I'm very glad that you watched the video. I have a video in the past where I have handwritten circuit diagrams. th-cam.com/video/kzmPyeMpEDg/w-d-xo.html In the circuit introduced in this video, we use the 2SK19, but since it is no longer in production, we hope you will also enjoy choosing a different FET. The operating voltage is 9V, but it works well from around 3V. The coils and switches you use can be anything you like, but you should be careful about the copper wire diameter of the coil you make. This time, the internal coil is wound with 120 turns and 12 turns of 2UEW/0.05mm MW, SW1 is wound with 21 turns and 6 turns of 2UEW/0.16mm, and SW2 is wound with 7 turns and 4 turns of 2UEW/0.16mm. The number of turns on the loop stick varies depending on the variable capacitor, internal MW coil, and ferrite bar used, so trial and error is required. In particular, I think it's worth making a loopstick antenna, because the sensitivity and directivity change significantly when multiple ferrite bars are bundled together or connected in series. The rotary switch has 4 circuits and 3 contacts and is wired so that when you change bands the unused coils are disconnected from the circuit. This circuit is designed to capture as many radio waves as possible even with a simple vinyl wire antenna, so please give it a try. Sensitivity depends on the quality of the coil, so wire diameter and winding method are important.
Fantastic build and performance! Puts my Palstar MW550P to shame. 👍
Are those small iron core coils implemented as bandpass filters?
I wish I had "Asian powers" to be able to reverse engineer it by just looking at pictures
Amazing , give me scematic diagram please, i am interesting to make it
I'm very glad that you watched the video.
I have a video in the past where I have handwritten circuit diagrams. th-cam.com/video/kzmPyeMpEDg/w-d-xo.html
In the circuit introduced in this video, we use the 2SK19, but since it is no longer in production, we hope you will also enjoy choosing a different FET.
The operating voltage is 9V, but it works well from around 3V.
The coils and switches you use can be anything you like, but you should be careful about the copper wire diameter of the coil you make.
This time, the internal coil is wound with 120 turns and 12 turns of 2UEW/0.05mm MW, SW1 is wound with 21 turns and 6 turns of 2UEW/0.16mm, and SW2 is wound with 7 turns and 4 turns of 2UEW/0.16mm. The number of turns on the loop stick varies depending on the variable capacitor, internal MW coil, and ferrite bar used, so trial and error is required.
In particular, I think it's worth making a loopstick antenna, because the sensitivity and directivity change significantly when multiple ferrite bars are bundled together or connected in series.
The rotary switch has 4 circuits and 3 contacts and is wired so that when you change bands the unused coils are disconnected from the circuit.
This circuit is designed to capture as many radio waves as possible even with a simple vinyl wire antenna, so please give it a try.
Sensitivity depends on the quality of the coil, so wire diameter and winding method are important.
If I have te powers I might experiment your incention anx come back to you with a variant. @@May_happiness_come_to_you_777
@@May_happiness_come_to_you_777 thanks you, for all information,i will try to make it, 👍👍👍👍