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FT-991 CAT Operation Manual

1

CAT

 

(

C

ompuTer

 A

ided

 T

rAnsCeiver

)

 

o

perATion

O

verview

The CAT (Computer Aided Transceiver) System in 

the 

FT-991

 transceiver provides control of frequency, 

VFO, memory, and other settings such as dual-

channel memories and diversity reception using an 

external personal computer. This allows multiple 

control operations to be fully automated with single 

mouse clicks, or keystroke operations on the computer 

keyboard.

Using the RS-232C Cable 

(Refer to figure 1)

The 

FT-991

 transceiver has a built-in level converter, 

allowing direct connection from the rear-panel CAT jack 

to the serial port of your computer without the need of 

any external boxes.
When using the RS-232C cable, set Menu item “028 

GPS/232C SELECT” to “RS232C”.
You will need a serial cable for connection to the RS-

232C (serial or COM port) connector on your computer. 

Purchase a 

standard serial cable

 (not the so-called “null 

modem” type), ensuring it has the correct gender and 

number of pins (some serial COM port connectors use a 

9-pin rather than 25-pin configuration). If your computer 

uses a custom connector, you may have to construct the 

cable. In this case, refer to the technical documentation 

supplied with your computer for correct data connection.

Using the USB Cable 

(Refer to figure 2)

Note

: A USB driver is required for remote control from 

a computer. Download the driver from the Yaesu 

website (http://www.yaesu.com).

The 

FT-991

 transceiver has a built-in USB to Dual 

UART Bridge, allowing direct connection from the 

rear-panel USB jack to the USB jack of your computer 

without the need of any external boxes.
You will need a USB cable to connect to the USB jack 

on your computer.

YAESU MUSEN does not produce CAT System 

operating software due to the wide variety of per-

sonal computers and operating systems in use today. 

However, the information provided in this chapter 

explains the serial data structure and opcodes used 

by the CAT system. This information, along with 

the short programming examples, is intended to 

help you start writing programs on your own. As 

you become more familiar with CAT operation, you 

can customize programs for your operating needs 

and utilize the full operating potential of this sys-

tem.

C

OnneCTiOn

⑦ ⑥

Pin No.

Pin Name

I/O

Function



N/A

---

---

‚

SERIAL OUT

Output

Outputs the Serial Data from 

the transceiver to the computer.

ƒ

SERIAL IN

Input

Inputs the Serial Data from the 

computer to the transceiver.

„

N/A

---

---

GND

---

Signal Ground

†

N/A

---

---

‡

RTS

---

---

ˆ

CTS

---

---

‰

N/A

---

---

GPS/CA

T

COM

Personal Computer

RS-232C “Straight” Cable

FT-991

Figure 1

USB

USB

FT-991

Personal Computer

USB Cable

Figure 2

Summary of Contents for FT-991

Page 1: ...FT 991 CAT Operation Reference Book YAESU MUSEN CO LTD...

Page 2: ...lied with your computer for correct data connection Using the USB Cable Refer to figure 2 Note A USB driver is required for remote control from a computer Download the driver from the Yaesu website ht...

Page 3: ...cal characters You may use either lower or upper case characters The commands available for this transceiver are listed in the PC Control Command Tables on the following pages Parameters Parameters ar...

Page 4: ...O O X MA MEMORY CHANNEL TO VFO A O X X X MC MEMORY CHANNEL O O O X MD MODE O O O O MG MIC GAIN O O O O ML MONITOR LEVEL O O O O MR MEMORY READ X O O X MS METER SW O O O O MW MEMORY WRITE O X X X MX MO...

Page 5: ...O INFORMATION Set 1 2 3 4 5 6 7 8 9 10 P1 0 Auto Information OFF 1 Auto Information ON This parameter is set to 0 OFF automatically when the transceiver is turned OFF A I P1 Read 1 2 3 4 5 6 7 8 9 10...

Page 6: ...Read 1 2 3 4 5 6 7 8 9 10 Answer 1 2 3 4 5 6 7 8 9 10 BY BUSY Set 1 2 3 4 5 6 7 8 9 10 P1 0 RX BUSY OFF 1 RX BUSY ON P2 0 Fixed Read 1 2 3 4 5 6 7 8 9 10 B Y Answer 1 2 3 4 5 6 7 8 9 10 B Y P1 P2 CH C...

Page 7: ...631 002 026 017 115 032 174 047 265 062 365 077 465 092 632 003 031 018 116 033 205 048 266 063 371 078 466 093 654 004 032 019 122 034 212 049 271 064 411 079 503 094 662 005 036 020 125 035 223 050...

Page 8: ...3 011 DVS TX OUT LEVEL 0 100 P2 000 100 3 012 KEYER TYPE 0 OFF 1 BUG 2 ELEKEY A 3 ELEKEY B 4 ELEKEY Y 5 ACS 1 013 KEYER DOT DASH 0 NORNAL 1 REVERSE 1 014 CW WEIGHT 2 5 4 5 P2 25 45 2 015 BEACON INTERV...

Page 9: ...P2 0000 4000 10 kHz step 4 082 RPT SHIFT 144MHz 0 4000 kHz P2 0000 4000 10 kHz step 4 083 RPT SHIFT 430MHz 0 10000 kHz P2 0000 10000 10 kHz step 5 084 ARS 144MHz 0 OFF 1 ON 1 085 ARS 430MHz 0 OFF 1 O...

Page 10: ...ER SELECT 0 OFF 1 INTERNAL 2 EXTERNAL 3 ATAS 4 LAMP 1 144 VOX SELECT 0 MIC 1 DATA 1 145 VOX GAIN 000 100 3 146 VOX DELAY 30 3000 msec P2 0030 3000 10 msec step 4 147 ANTI VOX GAIN 000 100 3 148 DATA V...

Page 11: ...emory 2 Memory Tune 3 Quick Memory Bank QMB 4 QMB MT 5 PMS 6 HOME P8 0 CTCSS OFF 1 CTCSS ENC DEC 2 CTCSS ENC P9 00 Fixed P10 0 Simplex 1 Plus Shift 2 Minus Shift Read 1 2 3 4 5 6 7 8 9 10 I F Answer 1...

Page 12: ...10 L K P1 LM LOAD MESSEGE Set 1 2 3 4 5 6 7 8 9 10 P1 0 DVS P2 0 DVS Recording Stop 1 DVS CH 1 Recording Start Stop 2 DVS CH 2 Recording Start Stop 3 DVS CH 3 Recording Start Stop 4 DVS CH 4 Recording...

Page 13: ...11 12 13 14 15 16 17 18 19 20 P2 P2 P2 P2 P3 P3 P3 P3 P3 P4 21 22 23 24 25 26 27 28 29 30 P5 P6 P7 P8 P9 P9 P10 MS METER SW Set 1 2 3 4 5 6 7 8 9 10 P1 0 COMP 1 ALC 2 PO 3 SWR 4 ID 5 VDD M S P1 Read 1...

Page 14: ...AM 6 RTTY LSB 7 CW R 8 DATA LSB 9 RTTY USB A DATA FM B FM N C DATA USB D AM N E C4FM P7 0 VFO 1 Memory P8 0 CTCSS OFF 1 CTCSS ENC DEC 2 CTCSS ENC P9 00 Fixed P10 0 Simplex 1 Plus Shift 2 Minus Shift...

Page 15: ...1 2 3 4 5 6 7 8 9 10 P R P1 P2 PS POWER SWITCH Set 1 2 3 4 5 6 7 8 9 10 P1 0 POWER OFF 1 POWER ON This command requires dummy data be initially sent Then after one second and be fore two seconds the c...

Page 16: ...X Read 1 2 3 4 5 6 7 8 9 10 R I P1 Answer 1 2 3 4 5 6 7 8 9 10 R I P1 P2 RL NOISE REDUCTION LEVEL Set 1 2 3 4 5 6 7 8 9 10 P1 0 Fixed P2 01 15 R L P1 P2 P2 Read 1 2 3 4 5 6 7 8 9 10 R L P1 Answer 1 2...

Page 17: ...P1 Answer 1 2 3 4 5 6 7 8 9 10 S H P1 P2 P2 Command Bandwidth P2 SSB Narrow SSB Wide CW Narrow CW Wide RTTY PSK Narrow RTTY PSK Wide 00 Default 1500 Hz 2400 Hz 500 Hz 2400 Hz 300 Hz 500 Hz 01 200 Hz...

Page 18: ...P1 0 RADIO TX OFF CAT TX OFF 1 RADIO TX OFF CAT TX ON 2 RADIO TX ON CAT TX OFF Answer T X P1 Read 1 2 3 4 5 6 7 8 9 10 T X Answer 1 2 3 4 5 6 7 8 9 10 T X P1 UL PLL UNLOCK STATUS Set 1 2 3 4 5 6 7 8 9...

Page 19: ...OX STATUS Set 1 2 3 4 5 6 7 8 9 10 P1 0 VOX OFF 1 VOX ON V X P1 Read 1 2 3 4 5 6 7 8 9 10 V X Answer 1 2 3 4 5 6 7 8 9 10 V X P1 XT TX CLAR Set 1 2 3 4 5 6 7 8 9 10 P1 0 TX CLAR OFF 1 TX CLAR ON X T P...

Page 20: ...Copyright 2015 YAESU MUSEN CO LTD All rights reserved No portion of this manual may be reproduced without the permission of YAESU MUSEN CO LTD 1508 C0...

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