AUTO CL&START
AUTO START

SCANS 6

DProgrammed scan

DAuto memory write scan

Programmed scan (and auto memory write scan) searches for signals within a specified frequency range, using the selected tuning step increments. The result is like an ‘automatic’ rotating of the main dial.

Preparation—setting the scan range:

Push and hold [PROG] to enter the ‘prog’ bank, then input the desired edge frequencies, mode and tuning steps. Refer to p. 27 for details.

Start/stop:

Set the [SQUELCH] control to the threshold point.

Push [PROG] to start the scan.

PROG” (and scan range number) appears in the bank name area.

Push [PROG] again to stop the scan.

Convenient:

Direct range selection—The desired programmed scan range can be selected using the keypad.

Push a numeral key before or after pushing the [PROG] key.

Programmed edges

 

Push [PROG]

FM

OFF DLY

 

kHz

Skip scan release—Programmed scan skips all fre-

PROG0 *NONAME*

quencies specified as skip channels in all 1000 chan-

PROG appears

nels.

 

 

 

Auto memory write scan operates in the same way as programmed scan. However, when a signal is received, the received frequency is automatically written into a memory channel in the auto write bank.

Preparation—written memories condition:

Push and hold [AUTO] to enter the written memory setting condition, then rotate the main dial to select the condition.

: Previously written memories in the ‘Auto’ bank are saved, then frequencies are written into the next available channels.

: Previously written mem- ories in the ‘Auto’ bank are cleared, then frequencies are written into channels, starting from channel 0.

Start/stop:

Set the [SQUELCH] control to the threshold point.

Push [AUTO] momentarily or for 1 sec. to start the scan.

CAUTION: Be sure the written memories condition is set as desired, otherwise previously written memories are cleared.

AUTO” (and scan range number) appear in the bank name area.

Push [AUTO] again to stop the scan.

 

AUTO bank

0

1234.567.00

1

1235.678.00

2

1235.890.00

3

4

1240.050.00

---------------

 

98

---------------

99

 

Push [AUTO]

FM

OFF DLY

 

kHz

AUTO0

*NONAME*

Convenient:

AUTO appears

The same convenient functions are available as de- scribed above.

24

Page 27
Image 27
Icom IC-R8500 instruction manual DProgrammed scan

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.