Lafayette HE-30 User Manual

LAFAYETTE
HE-30
COMMUNICATIONS
RECEIVER
=
g
TA

Lafayette HE-30 Specifications

General

Type	Communications Receiver
Modes	AM, CW, SSB
Tube count	12
Power Supply	AC 117V, 50/60 Hz
Frequency Range	0.55-30 MHz

Summary

Technical Specifications

Performance Specifications

Operating Controls and Modes

Initial Control Settings

Recommended control positions for AM, CW, and SSB.

Q-Multiplier and BFO Operation

Using the Q-Multiplier for selectivity and BFO for CW/SSB.

Operational Guides

Using the Circuit as Q-Multiplier/BFO

Step-by-step usage of Q-Multiplier and BFO circuits.

Tuning and S-Meter Usage

Location and Function of Controls

Main Tuning and Bandspread Dials

Explains tuning dials and their functions.

Function and Gain Controls

Describes Function, AF Gain, and IF Gain controls.

Selectivity and BFO Controls

Explains Selectivity and BFO-Q-Mult Frequency controls.

Band Selector and Other Controls

Circuit Theory

Antenna and Mixer Stages

Q-Multiplier, BFO, and IF Stages

Detector, AVC, ANL, and Audio Stages

Service and Alignment

IF Alignment Procedure

Steps for aligning IF transformers T4, T3, T2.

BFO and Q-Multiplier Adjustment

Procedures for adjusting the BFO coil T6.

RF Alignment Procedure