The Silicon Labs Si4730 series DSP receiver chip powers many of the portable shortwave radios currently on the market.
Manufacturers are not the only ones implementing the chip in receiver design, however; radio enthusiasts are too.
I recently discovered this short video by a Japanese hobbyist who implemented the Si4734 in his receiver design:
While I don’t speak Japanese, the author also has a webpage of detailed design notes you might check out (click here to view). I used Google translate for a rough English translation of the page.
Have any readers made a homebrew receiver from a Silicon Labs DSP chip? If so, please comment!
Click here to download the Si4734 product information sheet.
The Silicon Labs Si4734/35
I have gone through our Shortwave Radio Index (SWRI) and tagged every portable radio that is based on the Silicon Labs Si4734 DSP chipset.
The Si4734 has been one of the biggest innovations to happen to portable receivers in recent years. When implemented well into a receiver design, the Si4734 can give a small portable exceptional selectivity and sensitivty through the power of DSP (Digital Signal Processing).
Simply click on this link to see a list of portable shortwave radios that are designed around the Silicon Labs Si4734: