Tag Archives: New Degen DE1103

Andi provides detailed info and photos of the new Degen DE1103 DSP

Regarding the new DSP version of the Degen DE1103, SWLing Post contributor, Andi_84, writes:

I’ve opened [my Degen DE1103] and checked the semiconductors inside.

It’s definitely based on a Silicon Labs chip (Si4735-D60).

1) Display PCB
Valence Tech AP651 “LCD AND KEYBOARD CONTROLLER”: http://www.valencetech.com/products.php?prodID=ap651&type=ics
Datasheet: http://www.valencetech.com/doc/AP651/DS_AP651-Rev0.1.02.pdf

2) Main PCB

a) Silicon Labs Si4735-D60 “AM/FM/SW/LW Radio Receiver IC”: http://www.silabs.com/products/audio/fm-am-receiver/Pages/si473435.aspx
-> Chip is even capable of RDS, but it’s unfortunately not implemented in the DE1103
And, FM range covers down to 64MHz, while the DE1103 goes only down to 76MHz
Datasheet: https://www.silabs.com/Support%20Documents/TechnicalDocs/Si4730-31-34-35-D60.pdf

b) ST Micro STM8L152C6T6 “Ultra-low-power 8-bit MCU with 32 Kbytes Flash, 16 MHz CPU, integrated EEPROM”
Datasheet: http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00240181.pdf

c) China Hua Jing Electronics CD1622CB “110mw X 2 Dual-channel audio power amplifier”
-> Looks like a “chinese version” of the Sony CXA1622M
Datasheet: http://www.datasheet.hk/view_download.php?id=1039877&file=0024%5Ccd1622cb_203207.pdf

d) LM358 “Low-Power, Dual-Operational Amplifiers”
Datasheet: http://www.ti.com/lit/ds/symlink/lm158-n.pdf

Photos

The following photos are courtesy of Andi_84. Please click the image to enlarge.

External and unboxing

Internal and circuit board

Many thanks, Andi! These photos are excellent and certainly give us more insight into the new Degen DE1103 design.

I’m very curious how this new DE1103 compares with other DSP portables on the market.

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Not all Degen DE1103 eBay listings are the new DSP vesion

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Many thanks to SWLing Post reader, Eric Weatherall, who writes:

I’ve been interested by news of the updated DSP version of the Degen DE1103.

I just saw an eBay auction for a used DE1103 which listed “DSP” in the title. But I looked at a photo of the product and it showed the labeling of the original product. If you look at the bottom left of the unit, the older radios have two lines of product description printed in black, and the newer radios have one line.

Based on photos I found online, here is the old product’s description (which applies to both the Degen and Kaito versions)

“PLL FM STEREO/SW MW LW DUAL CONVERSION SYNTHESIZED WORLD RECEIVER”

And here is the new product’s description.

“FM STEREO/SW MW LW DIGITAL WORLD RECEIVER”

I thought this would be useful for anyone wishing to buy the new DSP version of this radio where a photo of the actual unit is shown.

Eric has a good point–many times on eBay, sellers simply copy descriptions from previous or existing listings. You my find a used DE1103 listed as a unit with DSP. It’s best to confirm the version with the seller before purchasing. To my knowledge, only the 2015 version of the Degen DE1103 has DSP.

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Tudor confirms: a new version of the Degen DE1103

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After publishing our previous post about a potentially redesigned Degen DE1103 with DSP, SWLing Post reader, Tudor, comments:

Yes, the DE1103 looks like it’s been redesigned. You can see it dissected here:
http://bbs.tecsun.com.cn/0002.asp?open=724665

Photo source: http://bbs.tecsun.com.cn/ via Tudor. Click to enlarge.

And, if I’m not mistaken, the SiLabs DSP chip can be seen in this picture:
https://dl.dropboxusercontent.com/u/5417175/2015102316185240911.jpg

Photo source: http://bbs.tecsun.com.cn/ via Tudor. Click to enlarge.

Wow–thanks so much for confirming this, Tudor! This is obviously a redesigned Degen DE1103. I also noticed “NEW-DE1103-MAIN-1.2” silk-screened on the board:

Photo source: http://bbs.tecsun.com.cn/ via Tudor. Click to enlarge.

The Hong Kong-based eBay vendor Bigbargainonline is selling the new Degen DE1103 for $79.00 US shipped. I’ve purchased from them several times before and was pleased with the experience.

There are other vendors selling the new Degen DE1103 as well (click here to search eBay) but make sure you’re purchasing the 2015 version of the Degen DE1103 since you can still find the cosmetically-identical legacy DE1103 new in box.

Tudor, thanks again for sharing a link to the discussion on tecsun.com.cn–while I can’t read Chinese (and the Google translation leaves something to be desired!) the photos certainly tell the story.

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