DDC 13.8 V and DC IN sockets

CONNECTOR INFORMATION 9

• DC IN

DC 13.8 V

4 1

[POWER] switch

Receiver

circuit

DC IN

Inner

Outer

Internal regulator circuit

Pin

Port name

Description

 

 

 

Inner

DC IN

Accepts connection to the AD-55A/V only

 

 

 

Outer

GND

Grounded.

 

 

 

• DC 13.8 V

Pin

Port name

 

Description

 

 

 

 

1

13.8 IN

13.8

V DC input; current consumption 2 A

 

 

 

 

2

12.5 OUT

12.5

V DC output when connecting AD-55/A/V

to [DC IN] socket. Max. 2 A

 

 

 

 

 

 

3

NC

 

 

 

 

4

GND

Grounded.

 

 

 

 

DREC REMOTE jack

Outer

Inner

3.5 mm (diam.) 2-conductor

DREC OUT jack

Outer

Inner

3.5 mm (diam.) 2-conductor

DPHONES jack

Outer

Inner

Middle

6 mm (diam.) 3-conductor

Pin

Port name

Description

 

 

 

 

 

• Grounded when squelch opens.

Inner

SQL

• Can be deactivated via initial set mode. (p. 31)

 

 

• Max. current: 1 A/12 V DC

 

 

 

Outer

GND

 

 

 

Pin

Port name

Description

 

 

 

Inner

DET

• Output detected audio output.

100–300 mV rms/4.7 kΩ

 

 

 

 

 

Outer

GND

Grounded.

 

 

 

Pin

Port name

Description

 

 

 

Inner,

Audio

• Outputs audio.

Middle

• Output impedance: 4–16 Ω

 

 

 

 

Outer

GND

Grounded.

 

 

 

34

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Icom IC-R8500 instruction manual DC 13.8 V and DC in sockets, REC Remote jack, REC OUT jack, Phones jack

IC-R8500 specifications

The Icom IC-R8500 is a highly regarded general-purpose receiver that has made its mark among amateur radio enthusiasts and professionals alike. This versatile communication receiver is known for its wide frequency coverage, advanced features, and robust design, making it a valuable tool for various applications, including shortwave listening, public safety communication, and aircraft monitoring.

One of the standout features of the IC-R8500 is its extensive frequency coverage. It spans a range from 0.1 MHz to 3 GHz, allowing users to access a wide spectrum of signals. The receiver includes coverage of HF, VHF, UHF, and even microwave bands, making it suitable for listening to everything from amateur radio transmissions to satellite communications.

The receiver employs a high-performance double-conversion superheterodyne architecture, which contributes to its excellent sensitivity and selectivity. The advanced RF circuitry minimizes interference and enhances the clarity of received signals. Users can expect outstanding audio quality and a wide dynamic range, even in challenging reception conditions.

Digital Signal Processing (DSP) is another key technology incorporated into the IC-R8500. The DSP capabilities allow users to apply noise reduction and filtering techniques to improve the quality of the received audio. Features such as automatic notch filtering and IF filtering help eliminate unwanted noise, enhancing the listening experience.

The IC-R8500 is equipped with a large, easy-to-read LCD display that provides information on frequency, mode, signal strength, and other essential parameters. The user-friendly interface simplifies operation, allowing quick access to various settings and functions. Additionally, the receiver supports various modulation modes, including AM, FM, SSB, and CW, catering to different listening preferences.

For those seeking enhanced connectivity, the IC-R8500 offers multiple options, including an audio output jack, and external speaker connections. It also has a built-in memory function, allowing users to store and recall favorite frequencies easily. The receiver can be controlled via a computer interface, offering versatility for advanced users and programmers.

In summary, the Icom IC-R8500 stands out for its wide frequency range, superior sensitivity, and advanced features powered by DSP technology. Its robust construction and user-friendly design make it a favorite among communications enthusiasts seeking a reliable and versatile receiver for various applications. Whether for hobbyist listening or professional use, the IC-R8500 remains a top choice in the world of radio receivers.