The DX-390 requires two sets of batteries for full functionality: 4 "D" cell batteries. Memory Backup/Clock: 3 "AA" cell batteries.
Here are some tips and tricks to help you get the most out of your RadioShack DX-390:
Slowly rotate the on the right side of the radio until the garbled, "Donald Duck" sounding voice snaps into perfectly clear, natural human speech. Managing the RF Gain and Attenuation Shortwave bands change drastically between day and night.
To keep your vintage RadioShack DX-390 operating like new for decades to come, follow these basic care tenets: radio shack dx-390 owners manual
Select your desired band by pressing the corresponding button: , LW , MW , or SW . Adjust the VOLUME slider to a comfortable listening level. 2. Tuning Methods The DX-390 offers four distinct ways to find a station:
: Requires 6 "C" cell batteries for main operation and 2 "AA" batteries for the clock/memory backup. Always use fresh AA batteries to avoid losing your saved presets.
Pull the knob slightly outward or push it inward to toggle tuning increments. The DX-390 requires two sets of batteries for
Read a full digitized version of the DX-390 Owner's Manual at ICanWorkThisThing.com .
Dual-conversion superheterodyne for AM/LW/MW/SW to minimize image interference.
Tune to an amateur radio band (e.g., the 40-meter band around 7.150 MHz). Managing the RF Gain and Attenuation Shortwave bands
If you connect a long, external wire antenna to the DX-390's external antenna jack, strong local AM stations might overload the receiver, causing "ghost" images of those stations to appear across the shortwave bands. Locate the slider.
Adjust until the "Donald Duck" scrambled voice clears up into a natural human tone. (Use Upper Sideband assumptions for bands above 10 MHz, and Lower Sideband for bands below 10 MHz). Maximizing Antenna Performance
Whether you just acquired a vintage unit or need a refresher on operating it, this comprehensive guide serves as an essential companion to the original owner's manual. Technical Specifications Overview