Audio Database

Image of DA-F10

Feature series FM/AM tuners.

A 4-pole phase linear LC block filter is used filter is used in the front-end mixer stage, a 6-pole phase-linear-type LC block filter is used in the IF stage, and a PLL IC is used in the MPX stage separation.

A newly developed lock tuning circuit has been adopted to enable accurate tuning.
The tuning point is maintained regardless of changes in temperature and humidity, and low distortion rate and high separation are obtained.

The selection degree of the IF stage can be switched between Narrow and Wide.
In the Narrow mode, the IF stage is a high selectivity tuner composed of a 6-pole phase linear LC block filter + 4-element ceramic filter.
In the Wide mode, the IF stage has group delay flat characteristics due to the 6-pole phase linear LC block filter, and becomes a low-distortion tuner.

The dual-gate MOS FET and the concentrated filter in the mixer stage provide a front end with excellent intermodulation interference characteristics.

The control IF circuit is a dedicated circuit independent from the signal IF circuit.
As a result, the group delay and amplitude characteristics of the signal IF circuit are not disturbed and the basic performance of the tuner is not adversely affected.

Model Rating
Type FM/AM Tuner
FM Tuner Section
Practical sensitivity 1.8 μ V, 10.4 dBf (IHF)
Effective selectivity Wide:45dB
Capture ratio Wide:0.8dB
AM suppression ratio Wide:60dB
Harmonic distortion factor Wide : 0.1% (1 kHz, stereo)
Narrow : 0.3% (1 kHz, stereo)
Separation Wide:50dB(1kHz)
S/N Mono : 75 dB
Stereo : 70 dB
Image interference ratio 85dB
IF interference ratio 90dB
Spurious interference ratio 85dB
Frequency characteristic 30 Hz to 15 kHz ± 0.5 dB
<AM Tuner Section>
Practical sensitivity 50dB/m (bar antenna, IHF)
Selectivity 25dB
S/N 55dB
Image interference ratio 40dB
<Audio section>
Output / Impedance 450mV/5k Ω (FIXED 100% Modulation)
0 ~ 1.2V/2k Ω (VARIABLE 100% Modulation)
Number of semiconductors 3 fet, 5 ic, 35 tr, 19 di
Pwer AC100V 50Hz/60Hz
Power consumption 15W
External dimensions Width 425x Height 169x Depth 264 mm
Weight 7kg