Hallicrafters SX-42 Operating Instructions
15 tube superheterodyne radio receiver
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- Operating instructions manual (24 pages) ,
- Operating instructions manual (23 pages)
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Hallicrafters SX-42 Operating Instructions
Excerpted from SX-42 Owner's Manual, Copyright 1946 Hallicrafters Co.
1. GENERAL
The Model SX-42 is a 15 tube superheterodyne radio receiver designed to provide amplitude modulated (a-
m) reception over the frequency range 540 kc (kilocycles) to 110 mc (megacycles) and high fidelity,
frequency modulated (f-m) reception over the frequency range 27 to 110 mc. Calibrated bandspread is
provided for the 80, 40, 20, 10, and 6 meter amateur bands. The general coverage dial and bandspread dial
are operated from one tuning control which consists of two independent knobs turning on concentric shafts.
A dial lock is provided to lock the unused dial while tuning the receiver. This exclusive Hallicrafters feature
insures accurate tuning and logging.
Frequency Coverage
Band
Coverage
1
540-1620 kilocycles AM/CW
2
1.62-5 megacycles
3
5-15 megacycles
4
15-30 megacycles
5
27-55 megacycles
6
55-110 megacycles AM/FM/CW
Adequate overlap is provided at ends of all bands. The receiver as normally supplied is designed to operate
from a 105 to 125 volts 50/60 cycle, single phase source of a-c power. These operating instructions also
cover Universal Models which operate from a 105 to 250 volts, 25/60 cycle single phase a-c source.
2. AC OPERATION
Be sure line voltage is 105 to 125 volts and frequency is 50 to 60 cycles before inserting power cord plug
into power outlet. Be sure all tubes are securely inserted in their proper sockets before receiver power is
turned on. The chart below lists the current and voltage data.
Power Consumption 110 Watts
Frequency
Line Voltage
Line Current
Type of reception
AM/CW
AM/CW
AM/CW
AM/FM/CW
50/60 Cycles
117 Volts
0.93 Amperes
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Summary of Contents for Hallicrafters SX-42
- Page 1 80, 40, 20, 10, and 6 meter amateur bands. The general coverage dial and bandspread dial are operated from one tuning control which consists of two independent knobs turning on concentric shafts. A dial lock is provided to lock the unused dial while tuning the receiver. This exclusive Hallicrafters feature insures accurate tuning and logging.
-
Page 2: Output Connections
6. ANTENNA AND GROUND CONNECTIONS The Model SX-42 is designed for a 300 ohm antenna impedance. The antenna impedance is not critical and excellent reception can be obtained from an antenna of from 50 to 600 ohm impedance. For maximum performance, the best possible antenna should be employed. - Page 3 7. DETAILED OPERATIONS a. Controls and Their Functions. In order to obtain the desired results from the receiver, it is recommended that you become familiar with the function of each control, Red indicators on the controls for broadcast reception and green for f-m reception are there to simplify operation. Controls and their functions are as follows: (1) BAND SELECTOR.
- Page 4 It is extremely simple to attain single signal c-w reception with the SX-42. First. set the RECEPTION switch at CW and the SELECTIVITY control at CRYSTAL SHARP. Pick a good solid c-w signal, preferably a commercial station because a commercial is likely to stay on long enough for you to complete the phasing adjustment for single signal reception.
- Page 5 position. Short the two antenna terminals to the ground terminal and tune receiver off station. Then adjust the "S" meter control until the pointer rests on left hand zero. Remove the short from the antenna terminals and the meter will indicate the relative carrier strength of each incoming signal as various signals are tuned ©1995-2010 Philip I.
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