• ‘OK’ message from IC-R8500 to PC

FE FE E0 4A FB FD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

End of message code

 

 

 

 

 

 

 

 

 

 

 

 

IC-R8500’s address

 

 

Preamble code

 

 

 

 

PC’s address

 

 

OK code

COMMAND LIST 10

• ‘NG’ message from IC-R8500 to PC

FE FE E0 4A FA FD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

End of message code

 

 

 

 

 

 

 

 

 

 

 

 

IC-R8500’s address

 

 

Preamble code

 

 

 

 

PC’s address

 

 

NG code

• Memory channel contents set & write (1A 00)

FE

FE

4A

E0

1A

00

 

 

 

 

 

 

 

 

 

 

 

(IC-R8500’s command)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC-R8500’s address

 

 

 

 

 

 

 

 

 

 

Command number

 

 

Preamble code

 

 

Sub command

 

PC’s address

Bank

CH no.

 

 

 

 

Frequency

Mode(Sc)

Tuning step

ATT

SCN

 

 

 

 

 

 

 

 

Memory name

 

1

 

9

0

 

1

 

2

 

3

9

 

0

 

7

 

8

 

5

 

6

 

3

 

4

 

1

 

2

0

 

5

 

0

 

1

1

 

3

 

9

 

5

 

1

 

9

1

 

0

0

 

3

4

 

9

 

4

 

3

 

2

 

0

 

5

 

2

 

3

 

8

 

3

 

5

 

3

 

0

 

3

 

0

FD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

C - R

8 5 0 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

‘13’

 

 

code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BCD code area (only neededwhen is selected)

 

 

End of message

10 Hz

1 Hz

1 kHz

100 Hz

100 kHz

10 kHz

10 MHz

1 MHz

1 GHz

100 MHz

ASCII code

The above data packet is an example of programming the following into memory channel 123 of bank num- ber 19:

Frequency: 1,234,567,890 Hz

Mode: FM

Tuning step: 199.5 kHz (programmable step)

Attenuator: 10 dB

Scan select: specified

Scan skip: specified

Memory name: IC-R8500

Clearing the specified channel data (Memory channel contents set & write)

FE FE 4A E0 1A 00 19 0 1 2 3 FF FD

Scan skip and select channels

Comment

Scan select

Scan skip

number

 

 

 

 

 

00

OFF

OFF

 

 

 

01

OFF

Specified

 

 

 

02

Specified

OFF

 

 

 

03

Specified

Specified

 

 

 

• Special bank number and channels (bn)

Special bank

Bank number

Remarks

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC-R8500’s command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC-R8500’s address

 

 

 

 

 

 

 

 

 

 

 

Command number

 

 

Memory channel

Preamble code

 

 

 

 

PC’s address

Bank number

 

 

 

 

 

 

 

 

End of message code

 

 

 

number

Blank data

FREE

20

• For programmed

 

 

scan, channel num-

AUTO

 

21

bers are as follows:

 

 

0P1=00, 0P2=01,

SKIP

22

1P1=02, 1P2=03,

etc., up to 9P1=18

 

 

 

 

and 9P2=19.

PROG

23

• There is only one

 

 

channel in the prior-

 

 

PRIO

24

ity bank.

• Gain and level data (gd; BCD data)

AF GAIN

Max.

 

 

Max.

SQUELCH

counterclockwise

 

 

clockwise

0000

 

 

 

0255

 

 

 

 

IF SHIFT

Max.

center

Max.

APF control

counterclockwise

clockwise

0000

 

0128

 

0255

36

Page 39
Image 39
Icom ‘OK’ message from IC-R8500 to PC, ‘NG’ message from IC-R8500 to PC, Memory channel contents set & write 1A

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.