Home : Catalogue : Components : JD 402A

Model JD 402A: AM/FM Stereo Tuner

Construction Details and Features:

  • Stereo audio signal amplification with two 12AX7 and two 12AT7 vacuum tubes.
  • Crystal phase loop lock and AM/FM signal frequency synthesizing for stable reception.
  • Low S/N signal to noise ratio for high signal sensitivity and selectivity.
  • Automatic station scanning with a noise reduction function.
  • 99 station presets for both AM and FM.
  • AC power off memory function.
  • LED display.
  • Low profile design.

Technical Specifications:

 
FM
AM
Frequency Range:
87.5 MHz to 108MHz
522KHz to 1611KHz
Usable Sensitivity:
< 20uV (S/N = 30dB)
< 6mV/M
S/N Ratio:
> 40dB
> 36dB
Stereo Selectivity:
> 30dB (250Hz to 6300Hz)
----------
Distortion THD + N:
< 0.5%
< 0.5%
FM Selectivity:
> 20dB ( + 400KHz)
----------
Capture Ratio:
< 3dB
----------
Mono Signal Selectivity:
----------
> 30dB
Harmonic Distortion:
----------
< 0.5%

Tubes:

2 pieces 12AX7s, 2 pieces 12AT7s
Power Supply:
30 watts
110V or 220V AC 50Hz/60Hz
Output Level:
> 2V 6dB
Size and Weight:
17 in. wide by 11.5 in. deep by 3.5 in. high.
Fuse:

1A at 120V; 0.5A at 220V AC 5 X 20mm

Warranty:
One year parts and labor.