Radio | Shack Dx-390 Owners Manual

This is the goldmine. The manual explains the six shortwave bands (SW1 to SW6).

| | Description | | --- | --- | | Frequency Range | 150 kHz to 30 MHz | | Modes | AM, FM, USB, LSB | | Tuning Steps | 1 kHz, 10 kHz | | Memory Channels | 100 | | Display | LCD display with frequency, mode, and S-meter readings | | Antenna | Built-in ferrite bar antenna and external antenna jack | radio shack dx-390 owners manual

| Parameter | Value | |-----------|-------| | Frequency range | MW: 520–1710 kHz LW: 150–450 kHz SW: 1.6–26.1 MHz (9 bands) FM: 87.5–108 MHz | | Sensitivity (SW) | < 10 µV for 10 dB S/N | | Selectivity | ±4 kHz (-6 dB), ±20 kHz (-60 dB) [AM/SW] | | IF rejection | > 60 dB (SW) | | Image rejection | > 40 dB (SW, below 10 MHz) | | Audio output | 250 mW into 8 ohms | | Speaker | 2.5 inch (66 mm) dynamic | | Headphone jack | 3.5mm stereo (mono speaker output) | | Dimensions | 190 × 115 × 32 mm | | Weight | 570 g (without batteries) | This is the goldmine

A common point of confusion not always emphasized is that it requires 7 batteries total 40 dB (SW