Nikko Gamma 20

Data

General

• Manufacturer: Nikko
• Model: Gamma 20
• Type: Tuner
• Years of construction: 1979 - 1981
• Made in: Japan
• Color: Black
• Remote control: no
• Power consumption:
• Dimensions: 482 x 70 x 330 mm (WxHxD).
• Weight: 5 kg
• Original price approx.: 380 US-$, 1'160 DM

Connections

• Number of inputs:
  • Antenna FM / MW: 75, 300 Ohm / 300 Ohm
• Number of outputs:
  • Line Out: 150 mV, 2.2 kOhm.
  • FM Det Out:

Specifications

• Reception: FM, MW
• Frequencies:
  • VHF: 88 - 109 MHz

MW: 530 - 1600 KHz

• Input sensitivity:
  • FM: 1.8 µV
  • MW: 350 µV
• Frequency response: 50 - 15'000 Hz, ± 0,5 dB
• Distortion factor FM (1 kHz):
  • Mono: < 0.08 %

Stereo: < 0.12 %

• Signal-to-noise ratio:
  • FM mono: 75 dB

FM stereo: 68 dB

• • MW: 38 dB
• Channel separation: 40 dB (1 kHz)
• selectivity:
  • FM: 70 dB
  • MW: 30 dB
• Co-wave selection: 1.5 dB
• Spurious wave selection: 70 dB
• Image frequency attenuation:
  • FM: 70 dB
  • MW: 30 dB

IF attenuation:

• • FM: 80 dB
  • MW: 25 dB
• AM suppression: 60 dB

Special Features

• VHF De-Emphasis switchable

Remarks

• Other models in the same series:
• Integrated amplifier:
• Nikko NA-390 II
• Nikko NA-590 II
• Nikko NA-790
• Nikko NA-1090
• Nikko NA-2090

• Preamplifier
• Nikko Beta 20
• Nikko Beta 40

• Power Amplifier
• Nikko Alpha VI
• Nikko Alpha 220
• Nikko Alpha 440

• Tuner
• Nikko NT-790
• Nikko NT-990
• Nikko Gamma 20
• Nikko Gamma 40

• [[Receiver:
• Nikko NR-319
• Nikko NR-519
• Nikko NR-719
• Nikko NR-819
• Nikko NR-1019
• Nikko NR-1219

• Tape Deck
• Nikko ND-390 II
• Nikko ND-590 II
• Nikko ND-790
• Nikko ND-990

• Record Player
• Nikko NP-390

• Equalizer:
• Nikko EQ-I
• Nikko EQ-II

• Reverberator:
• Nikko ATD-I

Pictures

• Excerpt from US advertising: Nikko Alpha 220, Beta 20, EQ-I, Gamma 20, ND-790