USB Powered Regenerative Receiver / 80m to 20m - CW SSB, AM, FM ( Holidays Special )

[@dxexplorer]

P.S. In the schematic I forgot to power Q1. Please power it from the positive rail in the base of Q1 also with 5 volt. I just woke up today after a long night trying to finish a long list of unfinished stuff for this year ( work related ). Thank you so much for sticking around and watching the videos and many thanks as well for all your comments. Merry Christmas and Happy Holidays to you all. 73, YO6DXE.

[@moormoor4281]

Thanking you most kindly from English England

[@moormoor4281]

Happy 🎄 Christmas 🎁⛄

[@dxexplorer]

Merry Christmas to you as well. I will work these days to finish the little design of the receiver and I will sure post the video once I receive the boards to also test it before to make sure is ok... then I will let everyone know about the project so people can order. Greetings from Transylvania. 73, YO6DXE.

[@MrTauron77]

Thank you for the many help provided by your videos, and also thank you to El Pititico, which inspired me to build the first successfully working SW transmitter for my old radios. I would like to wish you a Merry Christmas from Ajka, Hungary..

[@dxexplorer]

Always a pleasure my friend... and thank you as well for watching the videos. Talking about the Pitico... I am building one right now for me as well 😁😁😁. Merry Christmas and Happy Holidays to you and your loved ones. 73, YO6DXE.

[@Very_Dark_Engineer]

Same man, same studio. Happy Christmas

[@dxexplorer]

Haha... Merry Christmas my friend. I hope this spring I get to organize "the studio" a little bit 😅. 73, YO6DXE.

[@Very_Dark_Engineer]

Thanx. I mean solid stability over the time, that's not bad!

[@dxexplorer]

@Very_Dark_Engineer Ahhhhh... well passion never dies 😁. I may slow down now and then just because of work and other issues... but I try to make time for this too 😁.

[@CT7ARQ]

Looking forward to see the final result of the regen

[@dxexplorer]

Me too my friend. I am really excited about this one. I just discovered last night why the CW signals sound a little scratchy and basically as soon as I touch the ground of the receiver then all of a sudden it sounds fantastic. So it must be something on the filtering part as the interferences are making it sound "scratchy". I guess a metallic enclosure may fix that problem. Testing more these coming days. Merry Christmas and Happy Holidays. 73, YO6DXE.

[@piterstein9625]

Счастливого Рождества и Нового года, долгих лет и процветания вам и вашей семье

[@dxexplorer]

Спасибо также. Счастливого Рождества и счастливого Нового года вместе со своими близкими. 73, YO6DXE.

[@4L1LAT]

merry cristmas my friend☃. i have not put any comments on your videos recently, sorry for that😁. there is no free time for me in uni so i got bit distant with ham radio and all the fun. your projects are simple and lovely as always☺. good luck from 4L1LAT🎄🎄🎄❄

[@dxexplorer]

Haha no worries my friend. I know exactly what you mean. I also have the same issue and not much time even to write or reply to messages from friends. But slowly I will free myself and I will be back to normal. Merry Christmas buddy and Happy Holidays. 73, YO6DXE.

[@kestutisrimkevicius8891]

Merry Christmas! This project is very interesting, looking forward to see your next video. All the best!

[@dxexplorer]

Thank you so much. I would say that is the simple version of the modified N1TEV regen receiver. I hope both will turn out the way I like at the end. Merry Christmas and Happy Holidays. 73, YO6DXE.

[@alanuk8677]

You create some wonderful and interesting projects! Merry xmas and all the best for 2025 to you and yours. 73's M0KOE.

[@dxexplorer]

Thank you as well for watching the videos. Merry Christmas to you and your loved ones as well... Happy Holidays. 73, YO6DXE.

[@alanuk8677]

@@dxexplorer Thank you!

[@davidportch8837]

many thanks for another great video... Merry Christmas and happy new year to you and the family... best 73s..

[@dxexplorer]

Thank you as well for watching 🙏. Merry Christmas as well and Happy New Year to you and your loved ones. 73, YO6DXE.

[@4youian]

Merry Xmas Chip. Thank you so much for all the great video content. Wishing you all the best for the new year. 73, Ian, VK7IAN

[@dxexplorer]

Merry Christmas and Happy Holidays to you and your family as well Ian. Thank you so much for everything and for sticking around for so long. 73, YO6DXE.

[@F4LPM]

Merry Christmas my dear friend 73 F4LPM 🎄🎄🎄🎄

[@dxexplorer]

Merry Christmas and Happy Holidays. Thank you for watching the videos and for all the comments. 73, YO6DXE.

[@multilecful]

Happy Christmas Chip nice Radio

[@dxexplorer]

Thank you Nigel. I will come back to you later today with a video message 😁. Its about time ha. Merry Christmas my friend and Happy Holidays to you and your family. You are pretty much family to me by now 😁. 73, YO6DXE.

[@ABHIJITHMOHANAN1997]

❤❤❤❤

[@dxexplorer]

🙏🙏🙏 thank you for watching the videos and all the comments. 73, YO6DXE.

[@Newlife-ol6pk]

The only thing that made me give up the construction of radios is the lack of variable capacitors. I still have a reflex radio that works very well (it only works with a coil without a variable capacitor and what's cool is that all the stations change by themselves and come in the same time so that I don't understand the news, which anyway today is just propaganda. I know that there is an alternative with varicap diodes, but I also have to order them from China and the scheme of a radio becomes more complicated with another potentiometer and another current source... Merry Christmas to you too!

[@dxexplorer]

Ohh I agree with you when it comes to the radio stations and the news... maybe that is the reason why I concentrate mostly on the amateur radio bands... not on the broadcast stations 😅😅😅. About the varicap... I rarely use one of those. Basically most of the time I simply use 1N4001 regular rectifier diodes as varicap. For fine tuning you can also use a regular potentiometer as well... you just have to change the value of one capacitor in order to make it easier to tune between stations. I will talk more about this in the next video on this receiver. 73, YO6DXE and Merry Christmas 😁.

[@ozarktreasures8044]

Very nice Ciprian. You are the absolute master of the regen! I'll be following this build closely. Merry Christmas to you my friend.

[@dxexplorer]

Hehehe ohhh I wish I was the master. I barely started to really understand regen receiver properly lately and I love it. Merry Christmas and Happy Holidays to you as well. 73, YO6DXE.

[@bullthrush]

Nice regen. Have you tried a variometer in place of the fixed coil, they were popular in the early crystal radios, eliminating the need of a variable capacitor.

[@dxexplorer]

I never tried a variometer, but is like you read my mind haha. I do have on the table another extremely simple regen that will use one variometer, for the regen control. I wanted to post a video on that one but I didn't had the time to build the variometer properly so I ended up concentrating on this one instead. So we will have one with variometer soon as well. 73, YO6DXE.

[@moormoor4281]

Interested

[@franciscobezerramacaiba620]

Obrigado por compartilhar. Qual antena voce esta usando? Feliz Natal de Brasil.

[@dxexplorer]

Obrigado também. A antena é uma End Fed Half Wave 40-10m. Funciona tão bem mesmo com um fio de 4-5m. Muitas vezes noto que tem boa sensibilidade se for propagação, pois ainda recebe mesmo depois de desconectar a antena (mas nem sempre). Boas festas. 73, YO6DXE.

[@franciscobezerramacaiba620]

@@dxexplorer Obrigado.

[@kestutisrimkevicius8891]

dual gate isolated fet looks very applicable in regen receivers (e.g. BF998), just an idea for your new simple regen...

[@dxexplorer]

Ohhh I never thought of those. I will keep that for another regen though 😅 as I am nearly done with this one. Thanks so much for the tip. Added to the projects wishlist 😄. 73, YO6DXE.

[@kestutisrimkevicius8891]

@@dxexplorer How is the progress? When you will finish this project, how will be possible to buy PCB? Do you have ebay shop, or you will suggest to ordr directly in PCBWay? But PCBWay minimal qty is 10pcs which is not needed to every single amateur.

[@dxexplorer]

@kestutisrimkevicius8891 I was a bit busy filming two new videos and I also had some photo shoots but this coming week i will finish it. I do not sell PCB boards but I will put the link to the project on PCBWay. Minimum quantity is just 5 not 10. Most of my friends when they order the order together and split the spendings... is cheaper this way. So they all get one board each.

[@tuluhansati]

May you publish the circuit diagram?

[@dxexplorer]

Yes as soon as I finish testing it. I will publish the schematic and the PCB design for toner transfer method, or the PCBWay project link for those that would like to order a PCB board. I was last night until 4am trying to get it to work the way I want 😅. I want to finish the design for this one as soon as possible. 73, YO6DXE.

[@tuluhansati]

@@dxexplorer Okey🍀.Have a good one and happy new year👍😊.I will waiting your circut diagram.

[@dxexplorer]

Happy New Year 🥳🥳🥳. Ohh yes I can't wait to finish it so I can order the PCB boards. I only have a little issue to fix on how good CW and SSB sounds. Once I figure that out... I am ready 😁.

[@The_electronics_nerd]

Hi dx explorer

[@dxexplorer]

Hi buddy... greetings from Transylvania. 73, YO6DXE.

[@spyart1967]

Happy Christmas ... i have a question..... there is no power 5volt on Q1 transistor... how it works?

[@dxexplorer]

Probably because I forgot to run the power to that one in the schematic 😁. But is not the final schematic so its all good. I will fix that as well in the final version of the schematic. But basically I power the preamp with 5V on the base of Q1. Thanks so much for pointing this out. 73, YO6DXE and Merry Christmas 😁

[@tubeDude48]

What's the O.D. of the PVC, and length? Will a J310 work for Q2 instead? For the 5V supply, I would add a 1n4002 to protect the circuit from reverse polarity! --- Any chance in the future you might extended this to 10M, or maybe a separate project?

[@dxexplorer]

The diameter of the PVC pipe is 13mm... I never measured the length. Usually I cut them longer ( 4 cm ) then cut them to size after I made de coil depending on how many turns of wire I have on the coil. I thought about placing a reverse voltage protection diode, but since is pretty much impossible for me to reverse the voltage with the USB connector, I thought it won't be needed. I could place one in the final design though. About the 10m band.. you just have to remove some turns from L2 until you can receive the 10m band as well. Then you would need probably a larger value variable capacitor in order to cover more lower frequencies. I will try to play with a varactor diode with larger capacitance for the main tuning and see how much I can cover. Ideally I would like to make it 80 to 10m. Let's see if I succeed 😅. Merry Christmas. 73, YO6DXE.

[@tubeDude48]

@@dxexplorer - Many thanks for writing back, (so many don't), and for the info! PS: Had a Technicians License in the 80's but let it go. Totally dumb on my part. Now I'm 76 with Dementia, so I know I wouldn't be able to pass the test. The electronics part would be OK, but the rest would be hard. Oh well. At least they can't stop me from listening! 😀

[@dxexplorer]

@tubeDude48 Always a pleasure. About the comments... if KZbin doesn't mark it as spam and I see the comment... I always reply to each comment. Except sometimes when I totally forget... but usually I don't 😅😅. 73, YO6DXE.

[@tubeDude48]

@@dxexplorer - Ya, KZbin has a habit of DELETING if they don't like it!

[@dxexplorer]

@tubeDude48 Not so much. At least not on my channel. But I set up stuff to be automatically deleted when it comes to comments that have swearing and bad words... just because I know lots of kids watch the videos too and I don't want them to deal with the bad language used by some people. I try to keep the channel clean for the kids. 😁

[@moormoor4281]

Yes I purchase when available please PM me

[@user-np1wk5gb2y]

can you please send my the gerber files

[@dxexplorer]

I did not finished the design yet. Still making some more tests to get the best out of it... and also trying to cover the entire HF amateur radio bands from 1.4MHz to 30MHz. But... I cannot share the gerber files. The project will be available on PCBWay so anyone can order from there. 73, YO6DXE. P.S. I will share the link to the project file once I finish the design, in the final video on this receiver. Maybe sometime at the end of the month.