: Slide the power switch to the 'On' position. Ensure fresh batteries are installed or the 9V DC adapter is connected. Selecting a Band : Press the buttons to select your desired broadcast range.
If you need help resolving a specific performance issue with your DX-390 or are trying to track down original schematic diagrams for a repair, please let me know:
The owner's manual for the RadioShack DX-390 provides detailed information on the radio's features, operations, and maintenance. The manual typically includes the following sections:
The manual provides a detailed diagram of the 21 buttons. Key revelations include: radio shack dx-390 owners manual
Removing a specific surface-mount resistor (labeled "102") near the ferrite rod antenna on the PCB can dramatically enhance LW/MW sensitivity. Static Protection:
on the main board, you can enable smooth, continuous tuning without the annoying silence between stations. Sensitivity Boost:
If you need the exact manual (PDF) for button layouts, menu sequences, or troubleshooting, the original RadioShaft part number was (DX-390). Many public archives (like ManualsLib or RadioMuseum) host it. : Slide the power switch to the 'On' position
The DX-390 requires two sets of batteries for full functionality: 4 "D" cell batteries. Memory Backup/Clock: 3 "AA" cell batteries.
45 total presets (18 for Shortwave; 9 each for FM, MW, and LW).
The DX-390 offers versatile tuning methods to help you hunt down faint international shortwave broadcasts. 1. Direct Frequency Entry (Keypad) This is the fastest way to navigate to a known frequency. Press the FREQ button. If you need help resolving a specific performance
Press a number key ( 1 through 9 ) to assign the preset channel. The flashing will stop, confirming the save. How to Recall a Station Select the band of the stored station. Press the button. Press the corresponding number key of the stored station. Advanced Operation: Shortwave and SSB
The (catalog number 20-214) is a classic PLL synthesized world-band receiver that remains a favorite among shortwave enthusiasts. Originally manufactured by Sangean and rebadged for Radio Shack and Realistic, this radio is nearly identical to the Sangean ATS-818 .
The DX-390 is a portable, battery-powered shortwave radio receiver that covers a wide frequency range of 2.3-26.1 MHz. It features a digital display, 10 memory channels, and a built-in speaker. The radio is designed to receive AM (Amplitude Modulation) and SSB (Single Side Band) signals, making it suitable for listening to shortwave broadcasts, amateur radio transmissions, and other radio signals.
: To hear amateur radio, press the SSB button and slowly adjust the knob until the voice becomes clear and natural. Maintenance Tips Battery Care
The DX-390 is often criticized for "muting" while tuning (a brief silence between frequency steps). Enthusiasts frequently perform these "easy" community-sourced modifications: Disable Muting: By snipping or disconnecting the green wire at Pin #10 of the CNT 1 connector