• Year
  • 2001 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 350096

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

 Technical Specifications

  • Main principle
  • Superhet, double/triple conversion; ZF/IF 55845/450/10700 kHz
  • Wave bands
  • Broadcast, Long Wave, more than 2 x SW plus FM or UHF.
  • Power type and voltage
  • Batteries / addl. power jack / AA: 4 x 1.5 / 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: AM/FM Stereo/SW Dual Conversion SSB/700MEM E5 - Etón Corp, Lextronix Inc
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 167 x 105 x 27 mm / 6.6 x 4.1 x 1.1 inch
  • Notes
  • The ETON E5 portable radio features MW, SW with SSB, and FM Stereo, Clock, Sleep timer and Alarm.

    Main features

    • FM: 87.5 - 108 MHz, 87 - 108.1 MHz, 76 - 108 MHz,  selectable
      • Stepping: 100 kHz (keys), 25 kHz (tuning knob)
    • Amplitude Modulation continuous coverage from 150 to 29999 kHz. Sub-bands:
      • LW: 150 - 519 kHz
      • MW: 520 - 1710 kHz (10 kHz steps), 522 - 1710 kHz (9 kHz steps), selectable
      • SW: 1711 - 29999 kHz continuous scan (13 further sub-bands)
        • Stepping: 5 kHz (keys), 1 kHz (tuning knob)
        • SSB (BFO rotary knob)
      • Wide/Narrow filters
    • Manual, Direct entry, and Auto scan tuning (ATS on FM)
    • 700 Memory Presets
    • Alphanumeric four character memory station labeling
    • World time zone clock
    • 3.5mm external antenna jack
    • Local/DX switch
    • 3.5mm Stereo earphone jack
    • 3.5mm Stereo line-out jack
    • DC IN 6V jack for external power adapter (Positive (+) on center pin)
    • Manual activation of built-in charger when using Ni-MH batteries, 

    The ETON E5 was also sold as Grundig model G5

    Brief technical details

    The E5/G5 was made in CHINA by DEGEN . DEGEN released a similar model, the DE1103, that shares the same Receiver PCB assembly although with different reference label. While the E5/G5 uses a digital dial display with more comprehensive operation features, the DE1103 uses an analog like dial scale with a small digital frequency display. Another DE1103 version using DSP technology was later released by DEGEN.

    The E5/G5 uses two PCB assemblies.

    The MCU PCB reference "E5C 060208" uses two processors; one unmarked under blob style (U801) managing the rotary encoder/keys and LCD; another HT46R23 8-bit MCU (U802) managing the radio features including memory presets/labels with the help of a ATMEL524 (AT24C512) 512KB EEPROM (U803). A couple of LDO regulators (BR 55 89 (U804) and 7533-1 (U805)), a couple of transistors (2SC1623-L6 NPN (Q801) and S8550-2TY (Q802), and a few diodes do power supply and control functions.

    The Receiver PCB reference "E5A-II" contains the circuits for FM and AM reception. A TA7358 (IC1) FM Front-End passes the 10.7MHz IF signal to the TA2057NG (IC2) for further processing. A LC72137 (IC4) PLL controls the FM IC1 oscillator and AM 1st oscillator. The audio signal from IC2 is passed to a CD1622CB (IC5) audio amplifier driving the built-in 25 Ohm 1 Watt speaker in BTL mode, and the earphones jack in dual channel mode. A LM358 dual opamp drives the audio line-out jack. The SW band uses a dual-conversion circuit; the front-end uses discrete components and one NM-13 hybrid IC (IC6). The SSB/BFO is handled by another unidentified hybrid IC  (IC7).

    Made in China

  • Net weight (2.2 lb = 1 kg)
  • 0.346 kg / 0 lb 12.2 oz (0.762 lb)
  • Author
  • Model page created by Jose Mesquita. See "Data change" for further contributors.

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