YAESU FTX-1 Series CAT Operation Reference Manual

Introduction to CAT Operation

CAT operation requires the MAIN firmware version to be "Ver. 1.08" or higher. If the version is "Ver. 1.08" or lower, please update the firmware.

How to Check Current Firmware Version

1. Press and hold the [FUNC] knob.
2. Tap [EXTENSION SETTING]. If [EXTENSION SETTING] is not displayed, tap [FWD→] to switch screens.
3. Tap [SOFT VERSION]. The versions of each firmware will be displayed.

Image Description: The image shows the front panel of the YAESU FTX-1 series transceiver. A subsequent image displays a close-up of the unit's screen showing the firmware version check process, including options like "DISPLAY", "DATE&TIME", "MAIN", "SOFT VERSION", and "EXTENSION SETTING".

Connection Method

Connecting via USB Cable (CAT-1 / CAT-2)

Connect the unit to a PC using a commercial USB cable (Type C) to operate various digital modes and configure/control the unit using commercial software or freeware.

[Warning]:

When connecting the USB cable to the PC, you must first install the virtual COM port driver on your PC. Download the virtual COM port driver from our website.

Image Description: A diagram illustrates the rear panel of a PC with various ports. A commercial USB cable, identified as USB type-C, is shown connecting to the FTX-1 transceiver.

How to Check COM Port Number

1. Turn on the unit.
2. Connect the unit and PC with a commercial USB cable.
3. Open the Windows® Device Manager screen.
4. Double-click "Ports (COM & LPT)" in the Device Manager screen.

Image Description: A screenshot of the Windows Device Manager shows the "Ports (COM & LPT)" section expanded, listing entries like "Silicon Labs Dual CP210x USB to UART Bridge: Enhanced COM Port (COM5)" and "Silicon Labs Dual CP210x USB to UART Bridge: Standard COM Port (COM6)".

Note: The COM port numbers (e.g., COM5, COM6) may vary depending on your PC's configuration.

[Warning]:

If a "!" or "×" mark is displayed in the Device Manager, uninstall the virtual COM port driver once, and then install the correct COM port driver again.

Connection Method (Continued)

COM Port Settings for Various Software

The FTX-1 series uses the USB terminal on the side to provide two virtual COM ports: Enhanced COM Port (CAT-1) and Standard COM Port (CAT-2).

• Enhanced COM Port (CAT-1): CAT communication (frequency, mode, and other settings).
• Standard COM Port (CAT-2): TX control (PTT, CW keying, FSK control) or CAT communication (frequency, mode, and other settings) *.

* When using Standard COM Port (CAT-2) for CAT communication, ensure hardware flow control (RTS or DTR) is configured in your software. Set the communication mode or PRESET to "OFF" or "DAKY" in the setting menu below to prevent unintentional transmission.

[Warning]:

When using the USB cable for TX control, the transceiver may transmit unintentionally during PC startup. Please be aware of this.

[Warning]:

When disconnecting the USB cable, please exit the PC application first.

Connection Method (Continued)

TUNER/LINEAR Terminal (CAT-3)

The TUNER/LINEAR terminal on the back of the FTX-1 field head can be used for CAT communication (5V CMOS level serial communication).

Set "CAT-3" in the setting menu: [OPERATION SETTING] → [GENERAL] → [TUN/LIN PORT SELECT]. (Factory default: OPTION)

[Warning]:

The TX D and RX D of the TUNER/LINEAR terminal are 5V CMOS level, so they cannot be directly connected to RS-232C terminals on PCs or similar devices. Please be aware of this.

[Warning]:

A connection cable must be prepared by yourself, such as the separately sold band data cable T9207451A (mini DIN 10-pin to DIN 10-pin).

[Warning]:

Cannot be connected simultaneously with an external antenna tuner or linear amplifier.

Image Description: A diagram shows the rear panel of the FTX-1 transceiver with connectors labeled +13V, GND, TX D, RX D, TUNER/LINEAR, ANT, EXT SPKR. A table details the terminals:

Communication Format

Sending Commands

You can control the unit by sending commands from a PC using terminal software or other software.

Communication Parameters

• Baud Rate: 38400bps* (CAT-1, CAT-3 terminals) or 4800bps* (CAT-2 terminal)
• Synchronization: 1 start bit
• Data Bits: 8
• Stop Bits: 1* or 2 (CAT-2 is fixed at 1)
• Parity: None

* Factory default setting.

Setting Menu for CAT Communication

* CAT-2 stop bit cannot be changed to "1bit".

Command Types

Commands consist of three types: Set, Read, and Answer.

• Set: Input command (setting command). Commands to control the unit's settings from the PC.
• Read: Input command (read command). Commands to request the unit's response from the PC.
• Answer: Output command (response command). Response commands output by the unit.

CAT System Usage Example

Example of setting the frequency to "14,250.000MHz" on the MAIN side.

FA ↑ 014250000 ↑ ;

Command | Parameter | Terminator

○ Command: Consists of 2 English letters; uppercase/lowercase are recognized.

○ Parameter: The number of digits varies by command; parameters may be omitted.

○ Terminator: Entering a semicolon (;) signifies the end of the command. It is always required.

Error Messages

If an error occurs on the unit, it sends an error command ";?" to the PC.

Conditions: Command format is incorrect, or the unit cannot execute the received command.

CAT Control Command List

The following tables detail the CAT control commands available for the FTX-1 series. Commands are typically two-letter codes, followed by parameters. The tables indicate whether a command can be used for Setting, Reading, or if it generates a Response, and if it supports AI (Auto Information).

Detailed Command Tables: The following sections provide detailed parameter breakdowns for specific commands, often organized by P1, P2, P3, etc., indicating their function and available settings.

Command: AG (AF GAIN)

Parameter Explanation: A semicolon (;) indicates the end of the command. Empty fields indicate no parameter is required. Commands are 2-letter English codes.

Command: AB (MAIN-side to SUB-side)

Command: AC (ANTENNA TUNER CONTROL)

Command: AG (AF GAIN)

Command: AI (AUTO INFORMATION)

Command: AM (MAIN-SIDE TO MEMORY CHANNEL)

Command: AO (AMC OUTPUT LEVEL)

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