Yaesu FT-991A Reference Manual
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Yaesu FT-991A Reference Manual

Hf / vhf / uhf all mode transceiver
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CAT Operation Reference Manual
YAESU MUSEN CO., LTD.

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Summary of Contents for Yaesu FT-991A

  • Page 1 CAT Operation Reference Manual YAESU MUSEN CO., LTD.
  • Page 2 FT-991A a computer. Download the driver from the Yaesu website (http://www.yaesu.com). The FT-991A 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.
  • Page 3 Parameter Terminator Command List” and the “Control Command Tables” to configure the appropriate parameters. There are three commands for the Ft-991a as shown below: When configuring parameters, be careful not to make the following mistakes. Set command: Set a particular condition...
  • Page 4 perATion ompuTer ided rAnsCeiver Command Function Set Read Ans. Command Function Set Read Ans. VFO-A TO VFO-B PRE-AMP (IPO) ANTENNA TUNER PLAY BACK CONTROL POWER CONTROL AF GAIN SPEECH PROCESSOR AUTO INFORMATION LEVEL VFO-A TO MEMORY SPEECH PROCESSOR CHANNEL POWER SWITCH VFO-B TO VFO-A QMB STORE AUTO NOTCH...
  • Page 5 perATion ompuTer ided rAnsCeiver VFO-A TO VFO-B Read Answer ANTENNA TUNER CONTROL P1 0: Fixed P3 0: Tuner “OFF” P1 P2 P3 P2 0: Fixed 1: Tuner “ON” 2: Tuning Start Read Answer P1 P2 P3 AF GAIN P1 0: Fixed P1 P2 P2 P2 P2 000 - 255 Read...

  • Page 6: Band Select

    perATion ompuTer ided rAnsCeiver BREAK-IN P1 0: Break-in “OFF” 1: Break-in “ON” Read Answer MANUAL NOTCH P1 0: Fixed P3 P2=0 P1 P2 P3 P3 P3 P2 0: Manual NOTCH “ON/OFF” 000: “OFF” 1: Manual NOTCH LEVEL 001: “ON” Read P2=1 P1 P2 001 - 320...

  • Page 7: Date And Time

    perATion ompuTer ided rAnsCeiver CW SPOT P1 0: OFF 1: ON Read Answer CTCSS P1 0: Fixed P1 P2 P2 0: CTCSS “OFF” 1: CTCSS ENC/DEC Read 2: CTCSS ENC 3: DCS ENC/DEC 4: DCS ENC Answer P1 P2 Table 1 (CTCSS Tone Chart) 67.0 Hz 91.5 Hz 123.0 Hz...
  • Page 8 perATion ompuTer ided rAnsCeiver ENCORDER DOWN P1 0: MAIN ENCORDER P1 P2 P2 1: SUB ENCORDER 8: MULTI ENCORDER Read P2 01 - 99: Steps Answer ENT KEY Read Answer ENCORDER UP P1 0: MAIN ENCORDER P1 P2 P2 1: SUB ENCORDER 8: MULTI ENCORDER Read P2 01 - 99: Steps...
  • Page 9 perATion ompuTer ided rAnsCeiver Function Digits AM HCUT FREQ 00: OFF 01: 700 Hz ~ 67: 4000 Hz (50 Hz steps) AM HCUT SLOPE 0: 6 dB/oct 1: 18 dB/oct AM MIC SELECT 0: MIC 1: REAR AM OUT LEVEL 0 ~ 100 (P2 = 000 ~ 100) AM PTT SELECT 0: DAKY...
  • Page 10 perATion ompuTer ided rAnsCeiver Function Digits PRMTRC EQ2 LEVEL –20 ~ 0 ~ +10 (P2 = –20 ~ –00 or +00 ~ +10) PRMTRC EQ2 BWTH 01 ~ 10 PRMTRC EQ3 FREQ 00 : OFF 01: 1500 02: 1600 03: 1700 04: 1800 05: 1900 06: 2000 ~ 18: 3200 Hz...

  • Page 11: Agc Function

    Read 3: AGC “SLOW” 4: AGC “AUTO-FAST” 4: AGC “AUTO” 5: AGC “AUTO-MID” Answer 6: AGC “AUTO-SLOW” P1 P3 IDENTIFICATION P1 0670: FT-991A Read Answer P1 P1 P1 P1 INFORMATION P1 001-117 (Memory Channel) VFO-A Frequency (Hz) P3 Clarifier Direction +: Plus Shift, --: Minus Shift Clarifier Offset: 0000 - 9999 (Hz) P4 0: RX CLAR “OFF”...

  • Page 12: Memory Channel

    perATion ompuTer ided rAnsCeiver KEY SPEED P1 004 - 060 (WPM) P1 P1 P1 Read Answer P1 P1 P1 CW KEYING P1 1: Keyer Memory “1” Playback 6: Message Keyer “1” Playback 2: Keyer Memory “2” Playback 7: Message Keyer “2” Playback 3: Keyer Memory “3”...

  • Page 13: Monitor Level

    perATion ompuTer ided rAnsCeiver MONITOR LEVEL P1 0: MONI “ON/OFF” 1: MONI Level P1 P2 P2 P2 P2 P1=0 000: MONI “OFF” Read 001: MONI “ON” P1=1 Answer 000 - 100 P1 P2 P2 P2 MEMORY CHANNEL READ P0/1 001-117 (Memory Channel) VFO-A Frequency (Hz) P3 Clarifier Direction +: Plus Shift, --: Minus Shift Clarifier Offset: 0000 - 9999 (Hz)

  • Page 14: Noise Reduction

    perATion ompuTer ided rAnsCeiver MOX SET P1 0: MOX “OFF” 1: MOX “ON” Read Answer NARROW P1 0: Fixed P1 P2 P2 0: OFF 1: ON Read Answer P1 P2 NOISE BLANKER STATUS P1 0: Fixed P1 P2 P2 0: Noise Blanker “OFF” 1: Noise Blanker “ON”...
  • Page 15 perATion ompuTer ided rAnsCeiver PRE-AMP (IPO) P1 0:Fixed P1 P2 P2 0: IPO 1: AMP 1 Read 2: AMP 2 Answer P1 P2 PLAY BACK P1 0: DVS P2 0: DVS (Playback Stop) P1 P2 1: DVS (CH “1” Playback Start) 2: DVS (CH “2”...
  • Page 16 perATion ompuTer ided rAnsCeiver QUICK SPLIT Read Answer RF ATTENUATOR P1 0: Fixed P1 P2 P2 0: OFF 1: ON Read Answer P1 P2 CLAR CLEAR Read Answer CLAR DOWN P1 0000 - 9999 (Hz) P1 P1 P1 P1 Read Answer RF GAIN P1 0: Fixed...

  • Page 17: Radio Status

    perATion ompuTer ided rAnsCeiver RADIO STATUS P1 0: NORMAL MODE 1: MENU MODE Read Answer CLAR P1 0: RX Clarifier “OFF” 1: RX Clarifier “ON” Read Answer RX CLARIFIER PLUS OFFSET P1 0000 - 9999 (Hz) P1 P1 P1 P1 Read Answer SCAN P1 0: Scan “OFF” 1: Scan “ON”...

  • Page 18: Vox Delay Time

    perATion ompuTer ided rAnsCeiver S-METER READING P1 0: Fixed P2 000 - 255 Read Answer P1 P2 P2 P2 SQUELCLH LEVEL P1 0: Fixed P1 P2 P2 P2 P2 000 - 100 Read Answer P1 P2 P2 P2 SWAP VFO Read Answer P1 0: TXW “OFF”...
  • Page 19 perATion ompuTer ided rAnsCeiver VOX GAIN P1 000 - 100 P1 P1 P1 Read Answer P1 P1 P1 VFO-A TO MEMORY CHANNEL Read Answer VOX STATUS P1 0: VOX “OFF” 1: VOX “ON” Read Answer TX CLAR P1 0: TX CLAR “OFF” 1: TX CLAR “ON”...
  • Page 20 Copyright 2016 YAESU MUSEN CO., LTD. All rights reserved No portion of this manual may be reproduced without the permission of YAESU MUSEN CO., LTD. 1612-C...

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