Informations sur l'appareil:

National NCL 2000 Amplificateur
Fabricant:
National
Modèle: NCL 2000
Date:
Catégorie: Audio, Vidéo, TV, Multimédia
Groupe: Amplificateur
Description: Linear Power Amplifier
Information:
                                    

Ces manuels sont disponibles pour les équipements ci-dessus :

Type de document: manuel de réparation National-3885-Manual-Page-1-Picture
Nombre de pages: 33
Taille du fichier: 4.03 Mbytes (4230218 Bytes)
langue: Anglais
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Information:
GENERAL DESCRIPTION............................................................................................. 3 INSTALLATION ............................................................................................................. 4

2.1	CAUTION

2.2	Unpacking and Tube Installation

2.3	Power Connection

2.4	Antenna Connection

2.5	ALC Connection

2.6	Exciter Requirements

2.7	Exciter Connections

2.8	RF Exciter Connection (Transceiver)

2.9	RF Exciter Connection (Separate Transmitter and Receiver

With External Antenna Transfer Relay)

2.10	RF Exciter Connection (Separate Transmitter and Receiver

Without External Antenna Transfer Relay)

2.11	Relay Connection

2.12	Ground Connection

OPERATION.................................................................................................................... 8

3.1	Explanation of Controls

3.2	Preliminary Adjustment

3.3	CW Tune-Up Procedure

3.4	SSB Tune-Up Procedure

3.5	AM Tune-Up Procedure

THEORY OF OPERATION ........................................................................................ 12

4.1	Class of Operation

4.2	Grid Bias Supply

4.3	Input Circuit

4.4	ALC

4.5	Output Circuit

4.6	Metering

4.7	Primary Power Circuits

4.8	CW-SSB Mode Selection

4.9	Antenna and Transmit — Standby Switching

4.10	Cut-Off Bias

i SERVICE INSTRUCTIONS........................................................................................ 15

5.1	Tube Replacement

5.2	Filter Capacitor Board Removal

5.3	Cabinet Removal

5.4	Front Panel and Side Gusset Removal

5.5	Regulator Transistor Change

5.6	Air System Cleaning

5.7	Grid Resistor Tap Change

i TROUBLE SHOOTING............................................................................................... 17 1 PARTS LIST
National-3885-Manual-Page-1-Picture


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