KENWOOD KT-1010F

Commentary

FM/AM tuner equipped with Kenwood 4D system.

It is equipped with a direct linear reception synthesizer to suppress intermodulation.
The SN ratio has been improved by improving the front-end IM characteristics to suppress intermodulation and greatly reducing the noise level.

A distortion collecting circuit is used to compensate for the distortion generated by the ceramic filter.
As a result, a low distortion factor is obtained while maintaining a sharp selectivity.

It employs a direct linear loop detector to directly linearize the 10.7 MHz IF signal and detect it with a closed loop detector. In addition, a distortion correction circuit is provided in the closed loop to suppress the nonlinear distortion of the VCO and the distortion generated by the IF filter.
Since the DLLD is a closed-loop detector, noise generated in the loop is suppressed and SN is improved.

Equipped with a direct pure decoder, it is possible to perform stereo demodulation which is resistant to interference.
This eliminates the need for a low-pass filter, such as a clean reception filter, in the signal line and provides a clear stereo signal.

It is equipped with multi-dimensional tuning that visually conveys the process up to positive tuning.
Since it is a static lighting system, it suppresses the generation of noise and does not have a bad effect on the playback sound.

Equipped with an RF selector, it can be switched between Direct mode, which receives a large output station clearly with a strong electric field, and Distance mode, which receives a small output station with high sensitivity.

IF band 2-stage switching is possible.

It is equipped with functions such as auto Chinese arrowhead and manual Chinese arrowhead control which can receive a long-distance station with high SN, rec calibration, AMIF continuously variable control, stop level switching during auto tuning, 3-station program function, and random 16-station selection.

Model Rating

Type	4D System Super Synthesizer FM/AM Tuner
FM Tuner Section
Receiving frequency range	76 MHz to 90 MHz
Antenna impedance	75 Ω unbalance
Sensitivity (75 Ω)	Distance : 0.95 μ V/10.8 dBf Direct : 10 μ V/31.2 dBf
SN ratio 50 dB sensitivity	Distance Mono : 1.8 μ V/16.2 dBf Stereo : 24 μ V/38.8 dBf Direct Mono : 18 μ V/36.3 dBf Stereo : 240 μ V/58.8 dBf
Harmonic distortion factor	Wide mono 100Hz:0.008% 1kHz:0.0055% 50 Hz to 10 kHz : 0.02% stereo 100Hz:0.01% 1kHz:0.0085% 50 Hz to 10 kHz : 0.1% Narrow mono 100Hz:0.05% 1kHz:0.04% 50 Hz to 10 kHz : 0.15% stereo 100Hz:0.1% 1kHz:0.1% 50 Hz to 10 kHz : 0.3%
SN ratio (100% modulation, 85 dBf input)	mono:99dB stereo:91dB
Capture ratio	Narrow:2.5dB
Effective selectivity (IHF)	Wide:70dB Narrow:90dB
Stereo separation	Wide 1kHz:70dB 50 Hz to 10 kHz : 50 dB 15kHz:40dB Narrow 1kHz:50dB 50 Hz to 10 kHz : 40 dB 15kHz:36dB
Frequency characteristic	20 Hz to 15 kHz ± 0.5 dB
Image interference ratio (84 MHz)	90dB
IF Interference Ratio (84 MHz)	110dB
Spurious interference ratio (84 MHz)	100dB
AM suppression ratio (65.2 dBf)	65dB
Subcarrier suppression ratio	70dB
Output Level / Impedance	FM (1 kHz, 100% modulation) : 0.6V/1.7k Ω
<AM Tuner Section>
Receiving frequency range	531 kHz to 1602 kHz
Sensitivity	10 μ V / 250 μ V/m
Harmonic distortion factor (1000 kHz)	Wide:0.4% Narrow:0.8%
Image interference ratio (1000 kHz)	40dB
IF Disturbance Ratio (1000 kHz)	50dB
Selectivity (IHF)	Wide:25dB Narrow:50dB
Output Level / Impedance	0.18V/1.7k Ω
Signal-to-noise ratio (30% modulation, 1 mv input)	52dB
<General>
Power supply voltage	100 VAC, 50Hz/60Hz
Rated power consumption (Electrical Appliance and Material Control Law)	14W
External dimensions	Width 440x Height 64x Depth 319 mm
Weight	3.5kg