Відео

Clean build! And handmade capacitors? I’m inspired.

спасибо большое, вспомнил свое детство)))

Very nice build 👍

For those who don't know: This type of radio is sort of double tuned. The antenna couples into one tuned system that feeds the coil on the left of the white cylinder. The rf then is coupled over to the coil on the right. This is a good way to make a radio that is both sensitive and fairly selective. When operating into a set of headphones, all of the energy to make the signal in the headphones comes from the radio waves. There is no need for a battery. The adjustment on the right is the adjustment that is tuning the right hand side coil on the white cylinder. To the left of that is the "coupling control" which is a small value variable capacitor. On the far left is the tuner that is tuning the actual antenna. Ideally you would have a second crystal detector over to the left. To tune in a station, you can move the earphone over to the antenna tuner and adjust it until you hear some muddle of stations you think may have the one you care about in it. You then move the earphone over to the right hand part and listen as you tune the right hand tuner. When you get a station fairly loud, you make a fine adjustment on the thing way over to the left to get the signal better. You then see if you can hear the station you want. If stations are too muddled together you decrease the coupling until you hear the amplitude decrease slightly and then optimize the other knobs again. You go around and around a few times.

Brilliant. 73 de Ger EI6DP

Lots of skill involved here, and I'm impressed. I'm just the slightest bit disappointed that neither a galena crystal/steel cat's whisker or a bit of graphite from a pencil with a Gillette razor blade wasn't used. I personally don't blame you, for I never got those those two home-made P-N junctions to work at all. I was just hoping that my betters would have some luck with them.

Gary...I was being frustrated by the tuning process and saw your plexiglass contraction and I had to make one myself. It's great!

Interesting radio . I love this because I would be using it all day trying to figure out all of the stations that it can pick up . Do you find that there is a pattern to the frequencies and the settings that you need to set the radio to? meaning can you tune into consecutive stations one after the other , or do the frequencies come in randomly?

Awesome. 73 from KE9CCR.

What's the AM detector diode that you use when you built the AM crystal set receiver?

Why no more homemade instruments videos?

Thats pretty cool Gary i met you at the Walgreens in shinnston awhile back

A very nice set. Hope you had a great Christmas and New Years, Gary. 73's🎙KD9OAM🎧📻

Hey man, would you be cool to show us how to mess with the dead key on this radio cause I’m trying to figure it out there’s not very much on it. I want to put a amplifier but I can’t because my dead key is 4 watts.

Compact😮😮😮😮

just bought one. thanks for the review.

Good!

Very nice set! How did you coat the aluminum plates with teflon?

Hey Gary, do you think you or a sharp Ham buddy could figure out which SMT diode would be removed (jumpered?) to stop the damn low modulation? I bought 4 of them and the transmit audio is so low that when we adjust the squelch & volume to hear each other just right - then somebody else comes in and blows our speakers - even a stock unmodified cobra 29 is 2-3 times louder on AM and we can't use FM because there's others in our RV club who only have AM. I'd sure like to pull that dang limiter and I can always talk further away from the mic if necessary to prevent splattering. Thank you ahead of time! 👊🤠

The war is over Dum ass! It was not nice! Everyone lost. Thanks to people like you, stupid will never die. 😎

HOOWWww Nicely done! beautiful how you made it, very nice! Healthy and Friendly Greetings from the Netherlands! ... Rob

I would like to suggest anybody interested in very basic radios you can build yourself with simple tools and only basic skills Google "Armstrong Crystal Radio." The little radio is as simple as the most basic crystal set, but greatly, greatly outperforms even the best and most elaborate standard crystal radio in every possible way. This little radio is based on the principles developed as early as 1911 by Edwin Armstrong and used in the radios of the early 1920's. Be sure to click on the Armstrong crystal radio when the search engine brings it up. At the website there is also instructions to convert a simple crystal set into a Armstrong radio.

Hi. What did you use to produce the nice dial scales? And yes, making your own tuning caps isn't that hard, made a few myself.

Thank goodness it’s to cold where I am

160 meters used to be a Police dispatch band from that era, me thinks

Very clever design with that Faraday shield

Expertly made! And you did it all from salvaged material

Man that gives me the creeps 😬

Very nice project, but do I have it right that this is made mostly of scrap? I think I may have heard it was, about a dozen times ;-)

Very well made, I used to make crystal sets many years ago and for a detector I used a old pencil lead wrapped around a long piece of wire and leaning on a old razor blade with little pressure.the volume was not great but it worked.

Nice radio it has even RF gain control

HEY GARY KN6RSX

Wow I'm not alone with my pixie . I prefer that than all technology shit and yes ! it do the job very well . qrpp is my Ham radio vision . 73's

Hi Gary. It is a '_bare_ face lie' not a 'bear' one.

Greetings from Mt. Nebo, WV. That’s a fine looking radio! 😊 Glad I ran across your channel. 73! de KE8LUC

Always loved the night time propagation when the band goes long... The inner levels start to cool off..

I have fun doing this with my pixie on SDR sites all over western Canada and USA. On 40m from my QTH in southern BC I have got the meter at the Northern Utah SDR to S7. Amazes me. VA7VEB

I have the ultra v version is am able to do skip on it. the radio is stock powered by 12 volt battery on a 42 inch cobra magnet mount antenna on my gun locker inside the house!

Genius👏!

Very nicely made 👍

Years ago, I made a crystal set for a Science Fair...BUT no matter what I did a local radio station KOMA 50.000 watts in Moore OK (OKC) Over took any selection of any other AM stations. ,I heard stories of the broadcast bleeding onto telephone conversations.

This is how I always envisioned ham radio when I was a kid. Thank you, Gary, for showing how it's done.73's🎙KD9OAM🎧

A schematic would save all the description 🥹😀

I built my crystal radio several years ago while studying for my ham license. I included two traps to lockout our local radio stations. I need to get the radio out and play around with it.

Hello!Good work! To implrove sensetivity - please use a MOSFET switch detector (NO batteries or power supply) may be used. For example with the BF998/.I experimented with it - I was in a willage - and I heard noises in a phone (250 Ohms) at day.I highly recommend it! In my construction there was two variable coupled coil and a small (100pF) capacitor.The selectivity was quite good in MW band.Variable inductors allows increase quality factor to maximum value (and matching high impedance of a short antenna) and as a result we have more sensetivity.

Nice build!!! I just made a crystal set and added a #30 tube, with a tuning cap, and also includes a variometer tuning coil with a tickler coil. When I remove the 1.5 volt filament battery the set still works , but wont work with out the tube. The set regenerates nicely . So what I ended up with is a regenerative crystal radio. I ordered a 12V audio amp from Amazon and it drives a 1960s 8 ohm speaker. Strange radio, but actually works!!!!😀

my generation made these in boy scouts high school shop...

I still remember the crystal radio that I threw together about 60 years ago. I had a rock sample collection that was brought back from a Florida vacation, and so I used the quartz rock sample as the radios detector.

That’s awesome. ❤it . Thanks for sharing

Parts where I find them