Alinco DX-77E

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Alinco DX-77 E.

The Alinco DX-77 E is the European version of a 100 W shortwave transceiver made by Alinco . On the transmission side, it has all the amateur radio bands between the 10 m band and the 160 m band , as well as a continuous superhet receiver from 500 kHz to 30 MHz. All important functions of the device can be operated directly from the front. The device came to Europe in 1998.

Technical specifications

Channel

Top view with heat sink of the transmitter output stage
  • Frequency ranges: 1.8 MHz to 29.6999 MHz (amateur radio bands only)
  • Transmission power
SSB / CW / FM: 100 W (high) approx. 10 W (low)
AM: 40 W (high) approx. 4 W (low)
  • Attenuation of spurious emissions: min. 50 dB (30 m: 45 dB)
  • Modulation system
SSB: balance modulator
AM: pre-stage modulation
FM: reactance modulation
  • Carrier suppression: min. 40 dB
  • Sideband suppression: min. 50 dB (@ 1 kHz)
  • FM hub: +/- 2.5 kHz
  • Microphone impedance: 2 kOhm
The backside

receiver

1st IF: 71.75 MHz
2nd IF: 8.875 MHz
  • Reception range: 0.5 to 30.0 MHz
  • sensitivity
SSB: 0.25 µV (0.5 to 1.8 MHz: 1 µV)
AM: 2 µV (0.5 to 1.8 MHz: 10 µV) @ 1 kHz, 30% mod.
FM: 0.5 µV (for 12 dB SINAD )
  • Selectivity SSB, CW, AM-N: 2.7 kHz (- 6 dB); 4.7 kHz (−60 dB)
  • same as AM, FM: 8 kHz (−6 dB); 30 kHz (−60 dB)
  • dto. CW-N (with optional filter): 0.5 kHz (−6 dB); 1.35 kHz (−60 dB)
  • Spurious suppression: min. 70 dB
  • Image frequency suppression: min. 70 dB
  • NF output: min. 2 W (at 8 ohms with max. 10% distortion factor)
  • RIT setting range: +/- 1.0 kHz

General data

  • Operating modes: USB, LSB, AM, CW, FM
  • Number of memories: 100
  • Antenna impedance : 50 ohms
  • Power consumption
Send: max. 20 A
Reception: max. 1.1 A
  • Operating temperature: -10 to 60 ° C
  • Frequency stability : +/- 10 ppm (−10 ° C to 50 ° C)
  • Dimensions of the housing. 246mm * 94mm * 228mm
  • Weight: approx. 3.8 kg

swell

equipment

  • ADUA52: power supply cable
  • EDX-1: antenna tuner
  • EDX-2: Automatic antenna tuner
  • EJ-33U: CTCSS tone encoder
  • EJ-34U: Electronic Keyer Unit
  • EJ-35U: 500 Hz CW crystal filter
  • DM-1350: AC adapter
  • EDC-43: cigarette lighter cable
  • EDC-37: Power supply cable
  • EDS-5: Extension cable for microphone
  • EMS-14: table microphone
  • EMS-42: handheld microphone
  • ERW-4: PC interface

See also

Web links

Commons : Alinco DX-77  - collection of pictures, videos and audio files
  • Alinco website
  • Bernd Petermann: Inexpensive shortwave: Alinco transceiver DX-77E . In: radio amateur . No. 6/1998 , June 1998, pp. 642-645 .

Individual evidence

  1. ↑ Bernd Petermann: Inexpensive shortwave: Alinco transceiver DX-77E . In: radio amateur . No. 6/1998 , June 1998, pp. 642-645 .
  2. ↑ Original operating instructions
  3. ↑ Alinco data sheet