Arduino Superheterodyne Receiver

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In this project, we will upgrade a traditional shortwave superheterodyne receiver with an Arduino base tuner. This tuner is capable of receiving shortwave broadcasts on 41m band and above.
This modularized receiver consists of a transistor base mixer, I.F amplifier, Si5351 clock generator, and an Arduino Uno board.
This video shows all the steps of this project including, soldering, wiring, and adjustments.
Additional details and all the project files including Arduino sketch are available at jayakody2000lk.blogspot.com/2021/10/arduino-superheterodyne-receiver.html.
Content of the video:
00:00 - I.F amplifier PCB, and soldering all the resistors
00:32 - Soldering all the capacitors
00:50 - Soldering 455kHz I.F transformers
01:10 - Soldering 2SC724 transistors
01:22 - Placing and soldering all the connectors
01:35 - Mixer and detector stage PCB, and soldering all the resistors
02:05 - Soldering all the capacitors
02:41 - Soldering inductors...
02:56 - Soldering 2SC724 transistor
03:04 - Soldering all the connectors
03:18 - Core modules of the superhet receiver
03:22 - Connecting I.F amplifier and mixer PCBs
04:45 - Connecting Si5351 module to the Arduino Uno board
05:00 - Connecting EC11 rotary encoder
05:32 - Connecting Si5351 module to the mixer PCB.
05:58 - Upload Arduino sketch into the Arduino Uno board
06:28 - Tunning I.F amplifier using RF signal generator
07:20 - Tunning on 25m band...
08:07 - Tunning on 22m band...
09:01 - Tunning on 19m band...

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Опубликовано:

5 окт 2021

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Комментарии : 35

@berndg42 11 месяцев назад

Eine schöne Idee. Spiele schon lange mit der Absicht, so einen Bausatz für alle Typen von analogen Radios zu entwickeln.

@radiofm7694 2 года назад

Very interesting project, works surprisingly well 👍

@damithj 2 года назад

Amazing work Dilshan!

@acestudioscouk-Ace-G0ACE Год назад

This was very interesting and taught me a lot. Thank-you.😊👍

@rusras5873 2 года назад

Good jobs👍

@jcbacol 4 месяца назад

Excelente proyecto. pregunto... El si5351 tiene 3 relojes . se puede usar 2 clk, 1( uno) para IF y otro para el oscilador local?

@carlosmarmeli2587 11 месяцев назад

Que praticidade iso que é serviço profissional 73 abs.

@DubiousEngineering 2 года назад

I wish there was more of an explanation about the design and how it works rather than just a build video and music. Interesting to know you have done it, but how!

@DilshanJayakody 2 года назад

Did you check blog post associated to this? jayakody2000lk.blogspot.com/2021/10/arduino-superheterodyne-receiver.html?m=1 This link is already mentioned in the video description. Hope this is helpful to you.

@yofimee883 2 года назад

Proud of you bro! found you on #Hackaday !

@adambeedle 2 года назад

Cool!

@achalasamapriya2701 2 года назад

awesome .but keep in mind to use a ceramic screw driver to fine tune the IF transformers

@bsodmike 2 года назад

What bench equipment did you need to design these boards, spectrum analyzer & signal generator? Nicely done.

@DilshanJayakody 2 года назад

For this project, I used only an entry level RF signal generator. It (RF signal generator) is not mandatory for this project, you can also tune I.F transformers using a strong radio broadcast.

@bsodmike 2 года назад

@@DilshanJayakody I'll drop you an email, if you like I'd like to help moving this to a SMT single board design. May be it would be useful to be sold as a kit?

@Tektronics2007 Год назад

sir where can i bought si5351 module in sri lanka ?

@deeppramanick8809 2 года назад

1.Does the RF in(J1) from mixer to first IFT should be reversed, according to the schematic? i may be wrong. 2.can dector diode be used before 2nd if (for no reason) 3.curious about Sensitivity. thank you

@DilshanJayakody 2 года назад

Hi, 1. Wiring layout shown in the video is correct and tested. 2. Sorry, not much sure and clear about the configuration you suggested. 3. Yes, sensitivity is bit low on this receiver. I got string signals with my external antenna only.

@ashithariyapala3761 Год назад

Nice work Dilshan! I remember building superhets with those yellow , white and black IF sets back in school - used to get my stuff from Wikum radio nugegoda or Senith Electronics in Borella. Are these transformers still available? Kind regards Ash M0LKA.

@DilshanJayakody Год назад

Hello Ashith, thanks for your comment and I think I am also from that era 😀. I hope you remember the MW, SW, and FM radio circuits in Senith Sipnana, Kumarasingha Radio Books, etc. I.F transformers are now quite difficult to find in the local market. I know a few places in Pettah whos having old stocks. A few months ago, I ordered some I.F transformers from AliExpress, and it seems cheaper than buying from a local market 😊.

@ashithariyapala3761 Год назад

@@DilshanJayakody! Yes :-) I remember the kits that Kumarasinghe Radio had... I went with my Father to Pettah as I was too young to go on my own back then - I got the AM/SW kit with the LA4102 audio amp(remember those?). The senith magazines were really good too, and most of my pocket money was spent in their shop , which was not far from my school - D.S :-). You have a great channel keep it up!

@hernanmarcucci7500 2 года назад

ecxelent job !! which level in dB do you put in the receicer ???

@DilshanJayakody 2 года назад

Thank you. The oscillator provides 3dBm output.

@santhoshsd7240 2 года назад

👍👍👍

@damithj 2 года назад

How about taking the output into a PC and do the rest on the software like AGC...

@DilshanJayakody 2 года назад

Yes, this is a great idea! I also have plans to do a simple receiver design with a DSP core. Maybe a simplified DIY SDR receiver? :)

@damithj 2 года назад

@@DilshanJayakody Wow that would be cool! Wish I have time to do some too.. :)

@meddiys6171 10 месяцев назад

Very well, but i haven't Si5351 module!!!!!!

@lesleypaulvj_TVPM 2 года назад

What mixer and product detector does it use?

@DilshanJayakody 2 года назад

It design around a standard superhet configuration and uses Germanium signal diode as detector. The full schematic is available in here: github.com/dilshan/arduino-superhet/blob/main/design/if-amp-455khz/if-amp-455-schematic.pdf

@lesleypaulvj_TVPM 2 года назад

@@DilshanJayakody Ok, will go through...

@carlosmarmeli2587 Год назад

Tem a venda ese produto para o Brasil Gotaria de ter uma resposta