Homebrew HF receiver with good CW/SSB performances for amateur bands or general coverage.
ฝัง
- เผยแพร่เมื่อ 7 ก.พ. 2025
- Hello, in this video I describe a receiver for amateur radio bands (80m-10m) SSB/CW, driven by the JF3HZB VFO. It is a superheterodyne using a classical technology, with mixers and amplifiers. The selectivity is ensured by a cristal filter on 9 MHz, any other frequency will do.
You can find most of the components at "Kits and Parts", I have of course no commercial relationship with this company.
Schematics : f6crp.pagesper...
JF3HZB VFO : • Digital VFO with analo... (issue and fix in my case). Look in the description of this vidéo tyo find code, sketch, schematic
kit suppliers : kitsandparts.c...
SCAF MAC293 schematic and more : lpistor.chez-al...
N6QW S-meter : www.jessystems...
Audio is exceptionally good. 73
Thanks a lot.73 . Denis F6CRP
This is gold. Thank you for inspiring us with this wonderful hobby. Greetings from California.
Thanks a lot, I really appreciate. Happy new year.
Nice project, congrats
Thanks a lot
At last something that reminds me the good old times when I was a cadet at the army signal school in Britanny 😇 We had lamps and discrete transistors...Norton Thevenin Kirchhoff Shannon and I struggled to avoid punishment 😄...I love your "da sound of da Spoutnik" bro 👏
Those were the good old days. We still understood how it worked... Nowadays, the digital world has supplanted analog. But the laws of physics are intangible and still apply. See you soon bro.
Fabulous build, neat, good choices, sounds nice, Including a SCAF narrow audio filter is a big benefit. hope you enjoy it every time you turn it on. Paul VK3HN.
thank you Paul for your message which made me very happy. It's really very kind of you to leave such a glowing comment.
I've just discovered your YT channel, I'm going to spend some time there, there are some very nice things, congratulations for your work.
With many thanks. 73 Denis F6CRP
@@radiorider8249 I recognise good radio homebrew work when I see it. You might enjoy some of my Playlists on TH-cam, the videos on the K1SWL 3-band compact CW transceiver. Happy building 🤓
@@Paul_VK3HN Paul, your site is FANTASTIC !!! Congratulations.
@@radiorider8249 Thankyou, your project work is excellent! Keep up the TH-cam videos, they do take time to make, but they connect you with and encourage other hobbyists. 73!
This is wonderful! Thank you for posting the schematics on your website, I am learning to build my own transceiver
Thank you for your kind message. Unfortunately I no longer have a website but I can send you the diagrams by e-mail. All the best.
👍Thank you for video. Your receiver sounds and looks very nice. I must admit, I did wonder how it would compare with your Drake TR7 sitting below it. I had never seen the F6BQU SCAF variable AF filter before - very interesting.
Thank you Steve for your comment. It's always difficult to make comparisons. The TR7's quartz filters are of much better quality than the one I used in this receiver. Also, the TR7 is technically more advanced. That said, for quiet CW operation, apart from contests, I don't see much difference.
Thanks again for your message.
73 Denis F6CRP
Very well explained. Thanks.
Thanks a lot.
Getting that 9 MHz crystal filter is more than half the battle. After you get that, all things are possible hf receiver-wise.
You're absolutely right. A quartz filter is expensive, but you can always make one with patience and a batch of quartz.
There's always the option of using ceramic filters, which are cheaper and easier to find. Have a nice day.
すばらしい。その人の人格を理解できる作品です
ありがとうございました。
Absolutely superb idea, greatly appreciate you sharing your work, a question for you, i live in the limoges region, do you know were i can go to study for my ham licence, best regards..
Thanks a lot. You can contact the ham-club via its facebook page : facebook.com/crs87/?locale=fr_FR
Regards
Very cool project 😊😊
Old, but still valid technology. Thank you for your kind comment.
very nice
Thanks a lot for your comment. Best regards !
Quick question Denis? If I use the analog display DDS for a QRP transceiver how does the offset work. I see where to set it in the sketch but what tells the vfo when to output carrier with no offset for transmit and then with offset for receive? Or is the LO clock the receive one? I still imagine if both are on then cross channel interference between clocks will be a problem so ideally one is off whilst the other is on? is there a pin on the ESP32 that tells it xmit or receive....merce kind sir and 73.
Wonderful, very nice project, thank you! 73
3Thanks a lot for your comment.
Very well done and it sounds great! 73 Nick M0NTV
Thanks a lot Nick, have a nice day. 73 Denis F6CRP
very interesting
Thanks a lot for your comment. I'll go visit your site, it has a lot of very interesting things. 73 F6CRP
Awesome build! Tnx fer sharing 73 de VK2AOE
Thanks a lot for kind words dear friend and the good news is that you manage to understand more or less with my terrible French accent. 🙂73 Denis
Avec un si beau boîtier, pas étonnant que ça marche bien. 🙂
Sorry, I couldn't open your site.
Hello,
I understand that the host of my site has suspended its service.
Please give me your e-mail address, and I'll e-mail you the diagrams.
denis dot f6crp at wanadoo dot fr
73 Denis F6CRP
@@radiorider8249GM, OM. :-)
People don't like to share their email adresses for it's dangerous.
It would be great to have an internet link for download.
TU. 73
Do you have detailed schematics for this?
Yes, the schematic is on my site (in french sorry) URL : f6crp.pagesperso-orange.fr/tech/rx_deca.htm
@@radiorider8249 This appears to be an unsafe site according to my virus prtection software. Can you provide a secure link? Tnx.
Glad I found your nice channel.
73 de WA4AOS
Hello and thank you very much for your interest in the channel. Good continuation of your activities and with the pleasure of reading you or of contacting you on the air.
73 Denis F6CRP