Відео

Congratulations. Please follow the instructions in the video and message me using the contact form on the blog. 73, YO6DXE

😁😁 that I can't answer. Maybe next time. I will do one more on 10K. 73, YO6DXE

Thank you so much. Wishing you the same. 73

I hope so 😁😁

👏👏👏

👏👏👏🙏

Not lately as I didn't had much time. I do not miss the GGR though 😁.

What receiver ?

@@dxexplorer похоже имеется в виду схема приемника спутник появляющаяся в кадре на 3.33 ))))

​@@piterstein9625 ahhhhh the schematic of the Sputnik receiver I had on paper in the first video. Yeeees but I updated that schematic 100 times by now 😅😅. And I think I spoke in the video that I made some mistakes in the schematic. I can't remember... once I make a video I never have time to watch it again 😅... and its been three years... my memory is no longer as it used to be when I was 20 😅. 73, YO6DXE

I don't know, or at least I didn't know that. What I like is the good quality of the PCB boards, 3D printing etc. and great customer support. I guess the best answer could be offered by someone who migrated from one to the other. 73, YO6DXE

Look for local companies. Support your country!

@romanescu_misha I would... if they would have a fair price. But the costs here are more than the PCB boards and the mailing costs together from PCBWay. So... there is a reason why I do not make them local. Plus that the quality is not the same. Maybe one day they wake up.

dxexplorer.com/sputnik-regenerative-receiver Have a look at the article as I put together there all info, updated schematic and all videos together so it would be easy for anyone to understand it and build it. I hope it helps. Is basically the same schematic as in this video, but cleaned up and improved. 73, YO6DXE P.S. Let me know if there is anything you don't understand and you need more help.

I don't know that either. But since I like having all in enclosures I don't stress too much about that. Or if I would build the coax version and exclude the enclosure, most of the time I stay in the shade so again no stress 😅😅. 73, YO6DXE

Yes is a little harder to find here in Romania as well. But we still have substitutes we can use ( equivalents ) so is not such a big stress.

Did you use Substitute one ? and the equivalent can be J112 if I'm not wrong.

Thank you so much 😁. Today I will pick the winner. A bit later today as I just opened my eyes 😅. 73, YO6DXE

Hehehe... I think the ones who act as a ground in an HT is us while holding it in the hand. Indeed the PCB board of the HT is connected to the ground of the antenna, so you can't really "disconnect it" 😁. 73, YO6DXE

@ on second thought, yes you are probably correct to say that the human body probably does act as a counterpoise when holding the radio in hand. Likewise, the argument could be made (against my original objection) that even with the internal connection in place, if there is a parallel path for the RF that presents an impedance that better matches what the system needs, then there wouldn’t be RF will take that path almost exclusively (according to Ohm’s law dealing with parallel resistances). So my initial objection would thereby be expelled. (Sticking foot in mouth)

I am back at the scouts camp. Earlier I had a bit of running around with the dog 😁😁. 73, YO6DXE

I also have to build a proper rig to get better measurements as even the ones I do are not 100% accurate because when you put the antenna on the radio it will perform differently than the way it does when we measure it. The best way for me was to make sure all connections are well made... and always keep the antenna up away from objects ( never on the table )... and it seems that if you hold your hand on the ground part of the SMA connector then you are closer to how it would be when on the radio ( so I was told ).

Not really. I emailed Retevis and this is what I received back: Engineer response:“The step value cannot be changed in channel mode. After setting the step value, you need to adjust the frequency under VFO. Short press # to switch between VFO and channel mode”

Je vous remercie d'avoir pris le temps de me répondre. Si j'arrive à trouver une solution je vous recontacte.

@marinonijessy3436 Merci beaucoup. J'ai également demandé s'ils pouvaient résoudre ce problème dans une future mise à jour du firmware, mais c'était malheureusement la seule réponse que j'ai reçue. 73, YO6DXE

I can't remember honestly but I will test when I get back home next week.

Thanks so much buddy. This winter i try to do a simple multiband analog CW transmitter 😁. 73, YO6DXE

Thank you so much. Ohhh winter is coming so I hope I have time for more projects. I love homebrewing. 73, YO6DXE

I replaced the wooden one with a plastic one when I made the newer version, but now I want to get back to it and make a wooden box with aluminum front and back. Fingers crossed it turns out nice 😄. 73, YO6DXE

I think I also have a schematic for an air band and I want to try one. It is indeed impressive how much a single transistor can do 😄. 73, YO6DXE

I wanted to change it more for kids that may want to try it and make their life easier 😅😅😄😄. I am playing with it as we speak as I am up in the mountains and I love what I hear. 73, YO6DXE

Thank you so much 🙏 73, YO6DXE

Thank you 🙏🙏 73, YO6DXE

Thank you so much. I am up in the mountains now... the receiver works fantastic. 😁😁 73, YO6DXE

Multumesc mult. Hehe da si asta e drept. Da pai mai sunt si multi care nu prea se pricep la surubareala si nimeritul gaurilor pe panoul din fata da deja destule dureri de cap ))). Mai am un pic de mesterit, dar am pus un potentiometru mai mic si un jack audio de se instaleaza direct pe placa. Mai putine fire de lipit )). Poate pe seara urc design-ul nou. 73, YO6DXE

Ohhhh old is gold to me. Is funny that when I started about radios it was all on tubes. But later when I started building stuff I used transistors because it was hard to find the transformers. This winter I plan on doing some tubes projects too. Maybe I can find some low voltage ones. Is nice you are still playing around with circuits. Once you love it as a kid is hard to get away from it 😁. 73, YO6DXE

Yes, I have followed the evolution since I was young. In 1973 I built a triple conversion valve transceiver using a Colins mechanical filter, 250KHz and only two bands, 15 and 20m. The valve has its problems, but it also has its benefits, less noise and better fidelity, I miss these qualities. I recently bought a G90 from China that is truly amazing. All electronics have evolved to a state that already requires specialization, but there is still a lot that can be done in the area of experimentation. 73s and health my friend, py1bys from Rio de Janeiro.

Multam mult de tot 😁😁

Nu ai somn? Eu macar îs schimbul 3! 😁

@ezekiel7112 😅😅 ba daaaa. Acum de ceva vreme am ajuns la Cioclovina la tabara de cercetasi. Fug la somn ca la 7 am trezire... merem la taiat lemne de foc. Servici usor... 73 😄

Thank you so much 😁🙏🙏. 73, YO6DXE

Its more like ELF but we are about there 😁😁. I have a proper VLF receiver coming as well but is not so simple like this one.

I very much agree on this. It took me two years to properly understand the one I called Sputnik and to get it to work the way I wanted. And I am sure I still have lots to learn 😁. 73, YO6DXE

Thank you so much for watching the videos. 73, YO6DXE

Thank you so much one more time. 73, YO6DXE

Thank you so much 🙏🙏 73.

Haha ok 😅😅. 73, YO6DXE

I can't remember to be honest. I think the one in the video was around 80uH. Basically you can use anything between 55 to 110uH. The only thing that will be diferent is the length of the wire after the coil. The advantage of having for example a coil that is 55uH instead of 110uH is that you may have a bit more bandwidth on the 80m band. But the end wire will be a little longer too... somewhere around 3m if I remember. I have to rebuild mine as well so probably I will do another video on this one with proper measurements now that I have all the gear to do that. 73, YO6DXE

@dxexplorer 66pacific has a induction coil micro Henry calculator

@QSasquatch Yes... or sometimes I use an app called Coil32. But of course once built it doesn't always turns out to be the calculated inductance, so I prefer to measure it now. But calculating is good even if it doesn't turn out perfect, but if there is nothing to measure it with... at least we have an idea on how close we may be around that value.

@@dxexplorer All we can do is get close

Yes 😅😅

Greetings from Romania. 73, YO6DXE

I am new to this as well. 😁 73, YO6DXE

Always a pleasure. Greetings from Transylvania.

So far testing it works amazing with the connector I used. At the end is just a simple receiver I am not really looking into high performance out of it... it's all just for the fun of it 😁. I thought about the switch and the LED on the bottom but then if I want to place it standing when storing it in a locker or some place.. those will bother. So that is why I place all on top. Easier access to all also.

@@dxexplorer Thanks, sure! Have you considered an ELF receiver as your next project? An ELF receiver can be built similarly to a VLF receiver (FET gate resistor 100 - 1000 megohms). After the FET, there is a 30Hz low-pass filter and DC - 30Hz amplifier stages. The obtained signal 0 - 30Hz is recorded on the phone or computer. The recording should be listened to with 60x ... 100x playback speed. Inaudible frequencies become audible. For example 30Hz x 100 = 3000Hz and 1Hz turns to 100Hz.

@ingussilins6330 I keep thinking about it yes of course. I was searching for schematics the other day 😁😁

😁🙏 73, YO6DXE

Haha that sounds so cool. 😅😅 73, YO6DXE

Ohhh if its red is no longer sailor is diver hat... 😅 Jacques Cousteau memories 😁. 73, YO6DXE

It is indeed as I never thought I would get here since all the videos I make are pretty much me sharing whatever I do hoping that some people may be doing the same projects as I do and we kind of share info with each other. So is a surprize to me too but a pleasant one 😁. 73, YO6DXE

Thanks for the comment 😁. 73, YO6DXE

Ohhh no it was something else. I had to modify the oscillator circuit and turn it into an RF preamp... not it works like a charm.

@@dxexplorer - Glad to hear it !

@tubeDude48 Is just the signal was too low for the input of the counter. I rarely use it now as I have a smaller one now but is there just in case 😁

Thank you so much for watching. 73, YO6DXE