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Drake L-4B

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Desktop Shortwave Linear Amplifier

The Drake L-4B has 1000 watts PEP power input on AM, CW and RTTY and 2000 watts input on SSB. It covers 80, 40, 20, 15 and 10 meters (10 meters not available on late production). The high efficiency Class B Grounded Grid Circuit uses the new Eimac 3-500Z zero bias triodes. Power requirements are 115 V AC 50-60 Hz 30 amps or 230 V AC 50-60 Hz 15 amps. The included L-4 PS power supply (not shown) is in a separate enclosure. This amp features a quiet blower. There is a built in wattmeter calibrated at 300/3000 watts forward and 300 watts reflected.

Specifications
Type
Desktop Amateur HF Linear Amplifier 
Frequency range RX
TX
80-10 m 
Frequency stability
Tuning steps
Filters
Receiver
Modulations
Sensitivity
Selectivity
Receiver system
IF-frequencies
Image rejection
Audio output
Transmitter
Modulations
AM / CW / RTTY 
RF-output
2000W PEP SSB, 1000W CW 
Connections
Antenna
SO-239 
Impedance
50Ω 
Electrical
Power requirements
Mains through external L-4PS power supply 
Current drain RX
TX
Physical
Dimensions (w×h×d)
Weight
Form factor
Desktop 
Manufactured
Between and  
Other features
Memories
Usage
Amateur / Ham radio operators 
Manufacturer
Drake 
Model
L-4B
Features
 
Manuals, Diagrams and Brochures
 
None available  
 
 
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