Very simple SW superheterodyne radio (2-10 MHz), part 2

Correction/adaptations to the video: tin metal = tin plate. The electrolytic capacitor is not 100 uF but 470 uF (the schematic is OK and leading, it was well tested). When you look closely to the schematic you see that there are TWO possibilities to mix the VFO signal into the mixer transistor (BC 557, first IF). You can mix the signal into the base and into the collector (via a small capacitor), both things work. You can also see where to put a BFO signal in, when you want to use the radio for SSB reception. I have to say that I did not test SSB reception thoroughly, I only found that it worked (that was all).

Part 2 from the very simple SW superheterodyne radio.

Very simple superheterodyne 2-10 MC radio links to all the videos

   • Very simple superheterodyne SW (2-10 MHz) ...  
part 6 kind of overview
   • Very simple superheterodyne SW radio (2-10...  
part 5 reception results
   • Very simple superheterodyne SW radio (2-10...  
part 4 the local oscillator/VFO
   • Very simple superheterodyne SW radio (2-10...  
part 3 how to adjust the IF frequency on 455 KC
   • Very simple SW superheterodyne radio (2-10...  
PART 2 THE SCHEMATIC (2-10 MC SW RADIO)
   • Very simple SW superheterodyne radio (2-10...  
PART 1 DEMO OF THE CIRCUIT

The book about this radio is available on the Lulu website, author Ko Tilman, link in this description.

There are more than 1000 Video’s on my YT channel. I only do analog electronics: audio amplifiers, analog measuring devices, radio circuits, many Shortwave radios, many oscillators HF and audio, other audio & shortwave circuits. Also many (test) generators for all kinds of waveforms, both in the audio range and HF.

Also simple “switch” circuits like the Schmitt triggers acting on different input voltages, 555 circuits and circuits of basic electronics issues like “Ohms law”, resistance properties, capacitance properties, the capacitors testing process, electronic “matching” in audio circuits and audio amplifiers, audio pre amplifiers, microphone amplifiers, etc. In all cases you find the schematic inserted in the video.

When you have questions about (certain analog) electronic circuits and how to make them: go to my Channel trailer (Radiofun232 on You Tube) and go to the “looking glass”. Type there the keywords that you want/need like: “power supply”, audio amplifier, capacitor tester, oscillator, radio, shortwave, shortwave radio, or any keyword you like to find the essential info & schematics on my YT channel.

My You Tube channel trailer is here:    • Radiofun232 on YouTube, find working & tes...   When you search, search always “NEWEST FIRST” to get the right overview. You can also search via the “looking glass” on my Channel trailer via keywords like ”audio”, “radio”, “amplifier”, “filter”, “Shortwave”, “transistor”, “FET”, “oscillator”, “generator”, “switch”, “schmitt trigger” etc; so the electronic subject you are interested in. My books about electronics & analog radio technology are available via the website of "LULU”, search for author “Ko Tilman” there.

https://www.lulu.com/search?adult_aud...
I keep all my YT videos constant actual, so the original video’s with the most recent informations are always on YouTube. Search there, and avoid my circuits that are republished, re-arranged, re-edited on other websites, giving not probable re-wiring, etc. Some persons try to find gold via my circuits. I take distance from all these fake claims. I cannot help that these things happen. Update 8 April 2022.