Equipment information

National NCL 2000 Amplifier
Manufacturer
National
Model NCL 2000
Date
Category: Audio, Video, TV, Multimedia
Group Amplifier
Description Linear Power Amplifier
Information
                                    

These manuals are available for the above equipment:

National -- NCL 2000 -- Service Manual
File name National-3885-Manual-Page-1-Picture
Manual Type Service Manual
Pages 33
Size 4.03 Mbytes (4230218 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 8f06f2e74f8582861d3a8cfb8e367ee6
Downloads 485 since 09 January 2013
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
Start Free Download


Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Out of 56, 14 or 27, which is the smallest?
Powered by Commentics