DRAKE SPR-4 Dokumentacja Pobierz pdf (Strona 4)

1.2.2

1.2.3

1.2.4

Audio

Output

Power: 3 watts into 4 ohm load

(less

into higher

imped-

ance

loads

).

Hum and Noise:

More than 60 dB below rated output.

Calibration:

Dial is accurate to better than _

+

1 kHz when calibrated to

nearest 100 kHz calibration point.

POWER CONSUMPTION:

18 watts on 120 V DC, or 240 V AC, and 6 watts

on 12VDC.

2.5 watts on 12 V DC with dia1 lamps turned off.

SIZE AND WEIGHT:

5-1/2”

H x

l0-3/4”

W x

12-1/4”

D,

18 pounds

.

SEMICONDUCTOR COMPLIMENT:

Symbol

Ql

Q2

Q3

Q4

Q5

Q6

Q8

Q10

Q11

Q12

Q13

Q14

Q15

Q16

Q17

Q18

Q19

Q20

Q21

Q22

Q23

Q24

Q25

Q26

Q27

Q28

IC-1

Type

Function

2N3394

Loop Amplifier

2N3394

Range Crystal

OscilIator

2N3563

PT0 Buffer

SFC4982, MFE3007

RF Amplifier

SFC4982, MFE3007

Premixer

2N5950.

PT0 Oscillator

Q7 2N5245

1st Mixer

2N5245

1st Mixer

Q9 B5030

D . C . Regulator

SFC4982, MFE3007

2nd Mixer

2N5245

Crystal Oscillator

B5030

Audio Amplifier

B5030

Audio Amplifier

2N5949,

MPF102

S-meter

Amplifier

2N3394

Audio Amplifier

2N4125

Audio Amplifier

2N5950,

MPF102

Crystal Oscillator Buffer

2N4

125

AVC Amplifier

2N3394

Audio Amplifier

2N3394

Audio Amplifier

2N3566

Negative Supply Driver

2N3394

Audio Amplifier

SFC4982, MFE3007

IF Amplifier

SFC4982, MFE3007

IF Amplifier

2N3.566

AVC Detector

2N4125

Mute Control

2N3394

BF0

2N3394

AM Detector

CA3053

S-meter

Amplifier

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2-

1 2 3 4 5 6 7 8 9 ... 65 66

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