Drake SPR-4 Récepteur
Fabricant:
Modèle:
SPR-4
Date:
Catégorie:
Groupe:
Description:
Communication Receiver

Information

The SPR-4 is an all solid-state communications Receiver which can be programmed with accessory crystals to cover 150 kHz to 30 MHz . The SPR-4 receives AM, CW, SSB (upper and lower) and may be powered from 120 VAC, 240 VAC and 12 VDC.

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Service et Manuel de l'utilisateur
Type manuel:
Service et Manuel de l'utilisateur
Pages:
69
Taille:
17.16 Mbytes (17991663 Bytes)
Langue:
english
Révision:
Manuel-ID:
Date:
Qualité:
Document scanné, tous les lisible.
Date de transfert:
2017 08 09
MD5:
b356e8bb8cbbf812b7c681dcd3452cd8
Téléchargements:
1170

Information

1. GENERAL DESCRIPTION 1 1.1 Features 1 1.2 Specifications 1 2. INSTALLATION 5 2 . 1 Unpacking 5 2.2 Location 5 2.3 Power Requirements 5 2.4 Antennas 5 2.5 Speakers 6 2.6 Headphone Operation 6 2.7 Viewing Angle Options 6 2.8 Rear Controls & Connectors 6 3. OPERATION 11 3.1 Operating Controls 11 3.2 Simplified Operating Procedure 12 3.3 Dial Calibration 12 4. PRINCIPLES OF OPERATION 14 4. 1 Loop Amplifier 14 4.2 R .F. Amplifier 14 4.3 First Mixer 14 4.4 Premixer 14 4.5 Second Mixer 15 4.6 I.iF. System 15 4.7 Detection Systems 15 4.8 Audio Amplifier 15 4.9 AVC System 16 4. 10 S-Meter 16 5 . ALIGNMENT 19 5 .1 Removing Cover 19 5.2 Trouble Shooting 19 5.3 Alignment Instructions 19 6. ACCESSORIES 24 6.1 SCC-4 Crystal Calibrator 24 6.2 5-NB Noise Blanker 24 6.3 RY-4 Radio Teletype Adaptor 26 6.4 TA-4 Transceive Adaptor 28 6.5 AVC Alterations 31 6.6 Service Data on Accessories 34 Viewing Angle Options 1 4 Front Panel Operating Controls 2 9 Rear Controls & Connections 3 10 Block Diagram 4 13 Top Alignment Adjustment Points 5 17 Bottom Alignment Adjustment Points 6 18 SCC-4 Circuit Board 7 34 RY-4 Calibration Connection to SCC4 8 35 SCC-4 Schematic Diagram 9 35 5-NB Circuit Board 10 -37 5-NB Schematic Diagram 11 38 RY-4 Circuit Board Installation 12 39 RY-4 Pictorial Wiring Diagram 13 39 RY-4 Circuit Board 14 40 RY-4 Schematic Diagram 15 41 TA-4 Circuit Board Installation 16 42 TA-4 Pictorial Wiring Diagram 17 42 TA-4 Circuit Board 18 44 TA-4 Schematic Diagram 19 45 Bottom View - Circuit Board 20 46 Transistor Lead Configuration 21 49 Loop Amplifier Circuit Board 22 50 RF Amplifier Circuit Board 23 51 Range Crystal Oscillator CircuitBoard24 52 Accessory Crystal Circuit Board 25 53 Premixer Circuit Board 26 54 Premixer Output Circuit Board 27 55 1st Mixer Circuit Board 28 56 2nd Mixer Circuit Board 29 57 1st IF Amplifier Circuit Board 30 58 2nd IF Amplifier Circuit Board 31 58 S-Meter Circuit Board 32 59 Notch Filter Circuit Board 33 59 5 0 kHz Filter Circuit Board 34 60 BFO Circuit Board 35 60 AM Detector Circuit Board 36 61 Audio Amplifier Circuit Board 37 61 Power Supply Circuit Board 38 62 Accessory Crystal Chart — 33 SCC-4 DC/RF Voltage Chart -- 34 5-NB DC/RF Voltage Chart — 36 RY-4 DC Voltage Chart — 40 TA-4 DC Voltage Chart — 43 SPR-4 DC Voltage Chart — 47 SPR-4 RF Voltage Chart — 48 SPR-4 Schematic Diagram Fold Out

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