Sherwood S-3000 tuner

FM Tuner

The 5-3000 has been styled and designed primarily as an operating mate for the Sherwood Model 5-1000 amplifier, however it has operating flexibility which will work effectively with practically any good high-fidelity amplifier system.

The Model 5-3000 tuner can be used either in its self-contained metal cabinet (for open-shelf or table-top mounting) or the cabinet can be removed and the tuner built into your custom cabinetry. Refer to section under "Custom-Panel Installation" for further details.

Circuits:

AUDIO - cathode follower with level control.

FM - Low noise balanced antenna input transformer feeding cascode RF amplifier. Triode mixer, 2 IF amplifiers, cascaded limiters, and Foster-Seeley balanced discriminator. Delayed AGC applied to RF stage. AFC on oscillator. Feather-ray tuning eye.

 

Specifications:

Typical Sensitivity:

0,95 µV for 20 dB quieting

1,8 µV for 30 dB quieting

3,6 µV for 50 dB Signal-to-Noise Ratio

Typical Selectivity:  200 kc at -6 dB

FM Discriminator:  600 kc, peak-to-peak

Tuning Range:  87,5 - 108,5 mc

Frequency Response:  20 - 20,000cps ±0,5 dB

Distortion: 

Less than1/3 % Intermodulation DIstortion at 100% mod. (60/kc:4/1 w/std. Preemphasis)

Less than1% harmonic at 100% mod. 400 cps

Hum and Noise Level:  60 dB below 100% mod.

FM Drift:  ±2 kc (w/AFC); ±15 kc (w/o AFC)

AFC Corection: 16 dB

Output:  2,0 Volts at 100% FM

Oscillator Radiation: 6 dB below FCC requirements

Antenna: 300 Ω  balanced

Outputs:  cathode-follower audio FM multiplex

Power Consumption:  40 watts, 110 -120 V, 50/60 Hz

Dimensions:  14 x 10,5 x 4 inch

Weight:  16 lbs (shipping)