ID-800

Inside of IC-U1

IC-U1

Front of IC-U1

Setting place of UT-118 (Remove the battery pack)

Remover the cover

Installed UT-118

UT-118 Option

UT-118's Pin Assign

1	PTTIN_C	PTT IN	30	AGND	Analog GND
2	PTTOUT	PTT OUT	29	5V	5V
3	DMOD	to FM modulator(to 9600bps packet input)	28	VCC_8V	8V(4.5V-8.5V)
4	AMODIN	Voice INPUT	27	TXD	Flash memory output
5	F_RXD	Flash memory input	26	232_TX	Slow Data Output
6	BUSY_C	SQ INPUT	25	232_RX	Slow Data Input
7	RES	Reset for CPU	24	RMUTE	Mute signal
8	NC		23	FMDET	from FM Demodulator
9	NC		22	DAFOUT	Audio Output from Digital
10	NC		21	REFMOD	same as DMOD(thru buffer)
11	NC		20	NC
12	GND	Digital GND	19	FLASH	Flash memory writting control
13	GND	Digital GND	18	RXD_2_C	to CPU of UT-118
14	P01	To GND when adjusting.	17	TXD_2_C	from CPU of UT-118
15	NC		16	NC

If this option is connected with FM rig according to the following block diagram, you make the rig of the DV mode. (This diagram is the option UT-115 of IC-2200H. But circuit is same as UT-118. UT-118 changes software for multi path.) And you must add the PTT control curcuit for this diagram. When PTTIN_C set Low level and GMSK signal come from this option board, PTTOUT is going to Low level. Therefore, you can use to this signal for rig's PTT contraol.

Board Layout, Block Diagram and Circuit. You can download the whole service manual of IC-2200H from http://hamradio.lakki.iki.fi/new/Documents/Manuals/Icom/Ham%20Radio/base&portable/VHF/Icom%20IC-2200H%20service%20manual.pdf.)
Control method between H8/3687 and UT-118 is same as ID-1 control command. Signal lines are RXD_2_C(18pin) and TXD_2_C(17pin).(9600bps, 8bits, none parity, 1 stip bit)

Electric Spec. of each pin

	Pin Number	Electric Spec.	I/O	Remarks
to FM Modulator(DMOD)	3	350mVp-p	O	to Radio packet connecter
from FM Demodulator(FMDET)	23	600mVp-p	I	from Radio packet connecter
Audio Output(DAFOUT)	22		O
Audio Input(AMODIN)	4	500mVp-p	I
PTTIN_C	1	RX:High TX:Low	I	Pull Down with 47K
PTTOUT_C	2	RX:High TX:Low	O	Open Colecter
RMUTE	24	When Mute:Low	O	Open Colecter
RXD_2_C	18	3.3V CMOS	I	change to RS232C
TXD_2_C	17	3.3V CMOS	O	change to RS232C(Open Colecter)
BUSY_C	6	When received:Low	“ü—Í	Pull Down with 47K