• Country
• People's Republic of China

• Manufacturer / Brand
• Degen 深圳市德劲电子有限公司 Electronics Co. Ltd.; Shenzhen

• Year
• 2011 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 356319

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• DSP, Digital Signal Processor

• Wave bands
• Broadcast, more than 2 SW bands plus FM or UHF.

• Power type and voltage
• Batteries / addl. power jack / AA: 2 x 1.5 / 5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4.5 cm = 1.8 inch

• Power out
• 0.15 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: FM STEREO.MW.SW DIGITAL RECEIVER DE17 - Degen 深圳市德劲电子有限公司 Electronics

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 65 x 96 x 17 mm / 2.6 x 3.8 x 0.7 inch

• Notes

• The DEGEN DE17 pocket radio features FM, FML, MW, and SW bands, clock and sleep timer,

  Main features

  • FM: 87.0 - 108.0 MHz (100 kHz steps)
  • FML: 64.0 - 108.0 MHz  (100 kHz steps)
  • MW:
    • 522 - 1710 kHz (9 kHz spes)
    • 520 - 1710 kHz (10 kHz steps)
  • SW:
    • 2.30 - 23.00 MHz (5 kHz steps)
    • Continuous band scan
    • Intermediate points for easier operation, selectable:
      • 6 MHz (~49m)
      • 9 MHz (~31m)
      • 11 MHz (~25m)
      • 13 MHz (~22m)
      • 15 MHz (~19m)
      • 18 MHz (~15m)
  • Sensitivity
    • FM <= 5uV
    • MW <= 2.5mV/m
    • SW <= 50uV
  • Selectivity: 40dB
  • FM/SW antenna: telescopic or headphones wire, selectable
  • 225 memory presets
  • Manual, Auto, and ATS tuning
  • 3.5mm jack for stereo headphones
  • Power Supply on removable AA batteries
    • Dry cells 1.5V x 2;
    • Or rechargeable batteries charged via 5V 3.5mm jack (Negative at center pin)
    • Maximum current consumption: 140mA

  Brief technical details

  The main PCB assembly reference is "DE17 B3". The Keyboard PCB reference is "DE17 B2".

  The design is based on a Si4734-B20 DSP IC by Silicon Labs (IC2). A basic RF Fron-end, using one J8 NPN transistor (Q7) and one C3 pair of diodes (D6) for antenna ESD protection, handles the SW signals.

  A CD1622CB 2-channel/BTL audio amplifier IC drives the built-in 45mm 16 Ohm 0.25W speaker.

  A HT46R64 MCU IC by HOLTEK manages the radio and drives the LCD, with the help of a ATMLH236 serial EEPROM by ATMEL/MICROCHIP.

  The power supply uses some additional active components to handle the battery charging (M1 diode at D8) and power regulation (65N at Q6).

  The Keyboard PCB assembly uses a matrix with four T4 diodes (D1, D2, D3, D4).

• Net weight (2.2 lb = 1 kg)
• 0.9 kg / 1 lb 15.7 oz (1.982 lb)

• Author
• Model page created by Jose Mesquita. See "Data change" for further contributors.

• Other Models

• Here you find 12 models, 12 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Degen 深圳市德劲电子有限公司 Electronics Co. Ltd.; Shenzhen