Icom Control Commands, Command table, Data format, Basic format from PC to IC-R8500

10 CONTROL COMMANDS

The IC-R8500 can be connected to a PC via the PC’s RS-232C port. This allows you to control the receiver

from the PC and/or transfer data from the receiver to the PC.

■Command table

Operation		Cn	Sc	Remark
Reading freq. edges		02	—
Reading operating freq.		03	—
Reading operating mode		04	—
Reading M-ch contents package		1A	01	add bn+mc*
Reading bank name		1A	03	add bn*
Reading squelch condition		15	01
Reading S-meter level			02
Reading model ID		19	00
Set frequency		05		add fd*
	LSB		0001
	USB		0101
	AM		0202
	AM narrow		0201
Set operating	AM wide	06	0203
mode	CW		0301
	CW narrow		0302
	FM		0501
	FM narrow		0502
	WFM		0601
Memory channel selection		08	—	mc*
Bank selection		08	A0	bn*
Memory write		09	—
Set M-ch contents & write package		1A	00	add dt*
Set bank name		1A	02	add bn+nd*
Memory clear		0B	—
Stop scan			00
Programmed scan start			02	note 1
Auto memory write scan start			04	note 1
Memory scan start			22	note 2
Select memory scan start			23	note 2
Mode select scan start			24	note 2
Priority scan		0E	42
SEL-CH release			B0
SEL-CH tag			B1
VSC deactivation			C0
VSC activation			C1
Scan resume selection “∞ ”			D0
Scan resume selection “OFF”			D1
Scan resume selection “DLY”			D3

■Data format

• Basic format from PC to IC-R8500

FE FE 4A E0 Cn Sc Data area (e.g. fd) FD

Operation		Cn	Sc	Remark
	10 Hz		00
	50 Hz		01
	100 Hz		02
	1 kHz		03
	2.5 kHz		04
	5 kHz		05
Tuning step	9 kHz	10	06
	10 kHz		07
	12.5 kHz		08
	20 kHz		09
	25 kHz		10
	100 kHz		11
	1 MHz		12
	programmable		13
	OFF		00
Attenuator	10 dB	11	10
	20 dB		20
	30 dB		30
Voice	frequency	13	00
synthesizer
AF gain setting			01	add gd*
Squelch level setting		14	03	add gd*
IF shift setting			04	add gd*
APF control setting			05	add gd*
	AGC OFF		10
	AGC ON		11
Memory clear	NB OFF	16	20
	NB ON		21
	APF OFF		30
	APF ON		31
Power OFF (activating sleep)		18	00
Power ON (from sleep active)			01

Note 1: Only scan group 0 is usable.

Note 2: Use these commands after sending a bank or mode command.

• Answer from IC-R8500 to PC

FE FE E0 4A Cn Sc Data area (e.g. fd) FD

Preamble code (fixed)	IC-R8500’s address (selectable in set mode)		Command number
		PC’s address

(see table) Sub command number (see table) BCD code area

(‘REMARK’ in table) End of message code

				Sub command number
Preamble code (fixed)		IC-R8500’s address (selectable in set mode)				End of message code
			Command number
					BCD code area
	PC’s address

35