Icom IC-R72 Instruction Manual

Pages 36

Year 1990

Language(s)

of 36

Icom IC-R72 Receiver Specification

The Icom IC-R72 Receiver is a versatile and robust shortwave communications receiver designed to cover a wide frequency range from 0.1 to 30 MHz. This receiver supports multiple modes including AM, FM, USB, LSB, and CW, providing users with the flexibility to intercept various types of signals. The IC-R72 is equipped with a triple conversion superheterodyne circuitry which enhances signal clarity and reduces interference, ensuring high-quality reception. It features a digital frequency display with a resolution of 10 Hz, allowing for precise tuning. The receiver includes a PLL synthesizer that guarantees stable and accurate frequency generation.

For ease of use, the IC-R72 has a large, easy-to-read LCD screen that displays frequency, mode, and other operational parameters. The receiver's front panel is user-friendly, featuring well-organized controls for volume, squelch, mode selection, and bandwidth adjustment. A notable feature is its memory capacity, which allows users to store up to 99 channels, facilitating quick access to frequently used frequencies.

The IC-R72 also incorporates a built-in automatic gain control (AGC) system and a noise blanker to minimize unwanted noise and enhance weak signal reception. Its external antenna connector supports a range of antennas, providing greater flexibility in various operating environments. With a robust and compact design, the IC-R72 is suitable for both stationary and mobile setups. The receiver is powered by an AC adapter or optional DC operation, offering versatility in power sources. The Icom IC-R72 is an ideal choice for amateur radio enthusiasts and professionals needing reliable performance in a compact package.

Icom IC-R72 Receiver F.A.Q.

How do I perform a factory reset on the Icom IC-R72 Receiver?

To perform a factory reset on the Icom IC-R72, turn off the receiver. Then, while holding the [MW] button, turn the power on. This will reset all settings to factory defaults.

What is the best way to improve reception on the Icom IC-R72?

Improving reception can be achieved by using an external antenna, ensuring that you are in an open area away from obstructions, and minimizing nearby electronic interference.

How can I troubleshoot poor audio quality on my IC-R72?

Check if the speaker or headphone connection is secure. Ensure the audio settings are appropriately configured and try adjusting the RF gain and noise blanker settings.

How can I save a frequency to memory on the IC-R72?

Tune to the desired frequency, press and hold the [MW] button, then select a memory channel using the tuning knob. Press [MW] again to save.

What maintenance is required to keep the IC-R72 in good working condition?

Regularly clean the exterior with a soft, dry cloth. Check and replace any worn cables or connectors. Periodically check for firmware updates and avoid exposure to extreme temperatures.

Why does my IC-R72 keep losing power or turning off unexpectedly?

Ensure the power supply is stable and properly connected. Check the power cable for any damage and ensure that the battery, if used, is fully charged or replaced.

How do I manually tune the Icom IC-R72 to a specific frequency?

Turn the tuning knob to select the desired frequency. You can also use the numeric keypad to enter the frequency directly, then press the [ENT] button.

What should I do if the display on my IC-R72 is not functioning properly?

Check the contrast settings and adjust as necessary. If the problem persists, power cycle the device and ensure the power supply is stable. If issues continue, consult a technician.

Can I use the IC-R72 with a computer for data decoding?

Yes, you can connect the IC-R72 to a computer using an appropriate interface cable and software for decoding various signals. Ensure that your software supports the receiver's output format.

How do I adjust the bandwidth settings on the IC-R72?

Press the [BANDWIDTH] button to cycle through available bandwidth options. Choose the one that best suits your listening requirements for optimal audio quality.