A basic one transistor regen receiver uses an MPF102 JFET to give the regenerative gain. Also uses two transistors to amplify the audio to drive an earphone. How to Build an FM Radio Receiver
Archive for the ‘Radio, Television entertainment’ Category:
2024-03-29 FM Crystal Set Uses Helical Resonator For Tuning
This is a long article but a very interesting project. It uses HSMS-2850 Schottky detector diodes in a discriminator. He uses WE 1200 ohm sound powered headphones. He’s Canadian. https://electronbunker.ca/eb/FMCrystalSet.html
2023-11-06 Reproduction Antique Radio Tubes and sets
I’ve been discussing the restoration of a hundred y.o. radio, and I thought about the retro light bulbs that look like incandescents but use LED filaments. Someone should make some old tubes that are actually using LEDs that look like the filaments, but just for decorative purposes. The glass envelope would look like the tube;
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2023-09-25 TV Modulator Ch 3 Doesn’t Work For Digital TV
I Came across this old analog TV modulator in a box of stuff, so I plugged it into my digital TV and powered it up, with some audio modulation on the input. I set the switch to channel 3, and then pushed 3 on my remote, but I got no carrier whatsoever on the TV.
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2023-07-19 Big Oil’s Ad Campaign Against EVs
Mobil (ExxonMobil) trying to stop driver from cutting the gas hose. The most hilarious is the Nissan ad! 藍藍 Watch the video! Unplugged, or unhinged: Big Oil’s ad campaign against electric vehicles
2022-03-12 Homemade Adjustable Capacitor
Homemade Adjustable Capacitor I read that the 365 pF air variable capacitors are very expensive, $30 or more so I decided to try to build one. It’s not difficult to make an adjustable capacitor out of materials one may have at home. This one does not adjust easily, it’s more of a prototype. I got
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2022-01-03 Periscopes Replaced By Video Cameras
I’m sitting on the grass in the back yard and it’s chilly, but the sunlight feels really good on my back. I can hear some birds up in the trees, I’m waiting to see if they’ll come down and eat some birdseed. I started thinking about a way to watch them up there. What I
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2021-12-06 MP3 Player To FM Radio Link (Mono)
MP3 Player To FM Radio Link (Mono) This circuit allows you to play your MP3 or any stereo audio source into a mono signal for reception on an FM radio. It has no antenna and has a range of a dozen or so meters. It operates off a 6 volt rechargeable Ni-MH battery pack but
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2021-11-11 Starlink Antennas Changed To Square
The newer Starlink antennas have been changed from round to square – or actually they look rectangular. This would give more antenna surface for a given cubic shipping container. Might be easier to manufacture, too. Some British guy said that they had satellite TV ‘aerials’ back in the ’90s and they called them squarials. But
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2021-05-29 Tucker Carlson Lies About VAERS, Vaccinations and CoVID19 — BTC
In this short YouTube video Brian Tyler Cohen shows that Carlson lies about VAERS, vaccinations and CoVID19. The pundit and sham artist should be made to tell the truth. https://youtu.be/m8D1HhxE0d8 Carlson said 3,300 people died from vaccinations according to VAERS. That’s false! The VAERS says that the death after vaccination does not prove that the
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