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Talking about my radio experiments in dec/nov 2021 on MW and LW (long wave)



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This video shows my experiments during the past months, say autumn/winter 2021. The video is made for (a kind of) “amusement”, so not too serious.

I talk about links to my earlier video’s about the MW-LW receiver, radio coils, etc. I will try to give in the coming days (we live now 5 December 2021) some relevant links about the issues that I am talking about in this video. Have to search that out, what is relevant (or not).

Perhaps some first links:

https://youtu.be/38a-ek8AEHs
TRF Radio
https://youtu.be/9XK3nGlFQdk
AM Radio
https://youtu.be/Z2SfprC9PsU
Making radio coils

Video about the TDA 2003 audio amplifier (say 1 to 8 Watt audio output level on 12-14 Volt) is here:

Video link
https://youtu.be/KSJndhH95M4

Corrections to this video:

A) In the schematic on 4.30 (with the FET etc.) the coil L2 (to ground) is also 300 windings made of (what I call) “ape hair”. That means: very thin copper wire, of course the isolated type.

B) On 10.02 I say “medium wave filter” (medium wave is say 700 KC-1.6 MC) but of course I mean a radio filter that was made for Long Wave Radio reception (say starting around 150 KC).

C) On 12.42 I say “carbon filter” but of course I mean “cardboard filter”. Cardboard (say paper) is the material of which the form is made. Good properties of paper for a radio coil form are this: extremely low loss + the tube with the coil/copper windings on it can move easily on that ferrite rod (here: of 1 cm in diameter) from the left to the right, getting it to its best resonance peak to receive MW or LW radio stations.

I don’t show all the corresponding/relevant schematics/links now & here, but everything is on my YT Channel, also the schematics. They are always inserted in the video’s. Seach e.g. on my Channel trailer via the "looking glass" on keywords that you need/like (say "audio" or "radio" or whatever keyword).

My You Tube channel trailer is here: https://youtu.be/xbgQ8T3oqh4 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_audience_rating=00&page=1&pageSize=10&q=Ko+Tilman

I keep all my YT videos constant actual, so the original video’s with the most recent information 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/tried to find gold via my (radio) circuits. I take distance from all these fake claims. I can not help that these things happen. Upload 5 december 2021.
Category
Audio
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