Equipment information
National Radio Company NCL 2000 Amplifier
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Model:
NCL 2000
Date:
Category:
Group:
Description:
Linear Power Amplifier
Manual Type:
Service Manual
Pages:
33
Size:
4.03 Mbytes (4230218 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 01 09
MD5:
8f06f2e74f8582861d3a8cfb8e367ee6
Downloads:
1556
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 TV Multimedia">Receiver
With External Antenna Transfer Relay)
2.10 RF Exciter Connection (Separate Transmitter and TV Multimedia">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