nobcha a

8 Projects3 Followers3 Following
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Bio

I'm interested in designing a radio with Si4732 and Si5351a.

Joined

January 2021

Location

Osaka-shi, Osaka, Japan

Projects
To widen the memory size and CPU power, I replaced the ATmega328P to ESP32-C3 for R909-VFO PCB. And also porting the sketches related.
To change Arduino from ATmehga328P to ESP32-C3
119
I made the VFO based on Si5351a module. To improve the accuracy of frequency, I got help of GPS PPS signal.
GPS corrected VFO
189
Chinese air band receiver kit combined with the digital local oscillator. This is the second example of the R909-VFO applications.
Remodel the air band receiver kit with digital local VFOⅢ
153
This project is the follower of the previous project of “Remodel the air band receiver kit with digital local VFO”.
Remodel the air band receiver kit with digital local VFOⅡ
225
Si4732/35 are cool devices. To widen those frequency coverage and sensitivity, I will add the TA2003 mixer.
To widen the Si4732/35 radio coverage Ver1: airband
1.6K
A cheap, fantastic air band receiver kit became a stable radio with Arduino and Si5351a. After then I’m annoyed squelch switching noise. Whi
Remodel the air band RX kit for silent squelch switching
191
A good material for being familiar with Arduino and peripheral. And you can use this practcally.
The Franclin oscillator LC meter
328
A cheap, fantastic and easy to assemble airband receiver kit could be a stable radio with Arduino and Si5351a.
Remodel the airband receiver kit with digital local VFO
867
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Arduino UNO
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Arduino IDE
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Arduino
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