What to do if the 'TX' icon appears on my Yaesu FTA-750L Spirit Transceiver when using the SCU-42 headset adapter?
If the “TX” icon appears and the Yaesu Transceiver cannot be operated after connecting the SCU-42 headset adapter cable, ensure the adapter cable's plug is fully inserted into the MIC/SP jack and secured with the two screws. The issue arises if the plug is not fully inserted, preventing proper contact within the radio.
General| Frequency Range TX | 118.000 - 136.975 MHz |
|---|---|
| Frequency Range RX | 108.000 - 136.975 MHz |
| Modulation | AM |
| Operating Voltage | 7.4 V DC |
| Memory Channels | 200 channels |
| Waterproof Rating | IPX5 |
| Channel Spacing | 25 kHz |
| Waterproof | Yes |
| GPS | Built-in GPS |
| Battery | 7.4V 1800mAh Li-ion |
Details FCC RF exposure compliance for occupational use, including applicable standards and guidelines.
States that there are no user-serviceable points inside and all service jobs must be referred to an Authorized Service Center.
Introduces the YAESU FTA-750L/FTA-550/FTA-450L transceivers and their key features like COM band, VOR/ILS, LCD, and GPS capabilities.
Explains the meanings of danger, warning, and caution marks, as well as prohibited and required action symbols used in the manual.
Provides critical safety instructions for using the radio, including avoiding prohibited areas and handling potential hazards.
Lists the available radio models: FTA-750L, FTA-550L, and FTA-450L, specifying battery types.
Details optional accessories like speaker microphones, earphones, and PC programming software, along with supplied accessories.
Describes the BNC connector for attaching antennas, specifying impedance requirements for optimal performance.
Explains the function of the inner VOLUME knob and the outer DIAL selector knob for adjusting volume and tuning frequencies.
Identifies and describes the LCD display, microphone, cursor keys, ENT key, control keys, COMM key, numeric keypad, and 121.5 MHz emergency key.
Details the POWER switch, PTT (Push To Talk) switch, and SQL (Squelch) switch located on the left side of the transceiver.
Explains the MIC/SP Jack, DATA Jack, and EXT DC Jack on the right side, including connection precautions.
Explains the various fields and icons displayed on the LCD in COM band mode, such as frequency, operation modes, and status indicators.
Illustrates and describes the VOR CDI and ILS CDI screens for the FTA-750L/FTA-550, detailing navigation indicators.
Shows and explains the GPS Information Screen and GPS Compass Screen for the FTA-750L model.
Details the GPS Status Screen and Waypoint Navigation Screen for the FTA-750 model, including their respective indicators.
Provides step-by-step instructions for installing and removing the rechargeable Lithium-ion battery pack, including safety notes.
Outlines the procedure for charging the Lithium-ion battery pack using the SAD-25 charger and SBH-11 cradle, and important charging notes.
Explains how to connect an optional headset using the SCU-42 adapter cable, detailing the connection steps.
Highlights critical precautions, including keeping the radio away from children, battery disposal, and its IPX5 waterproof capability.
Step-by-step guide on how to power the transceiver on and off, including initial warning display.
Details how to adjust the audio volume using the VOL knob and set the squelch threshold using the SQL switch and DIAL knob.
Describes how to quickly access the 121.5 MHz emergency frequency using the dedicated key, including how to exit the mode.
Describes the available operation modes: COMM, MR (Memory), WX (Weather), GPS, NAVI, and SETUP, and how the last used mode is recalled.
Step-by-step instructions to reset the radio to factory default settings via the SETUP menu.
Explains how the radio displays VOR signals, including the OBS setting, deviation marks, and TO/FROM indicators.
Describes how the radio displays ILS signals, including localizer (LOC) and glide slope (GS) indicators, and compass rose behavior with/without GPS.
Explains the dual watch feature for checking activity on a priority channel, and how to set the P-ch frequency.
Introduces the stopwatch and countdown timer functions available on the radio.
Explains the TOT feature that limits continuous transmission duration to prevent battery drain and unintended transmissions.
Guides on activating VOX for hands-free operation, notes on its function with internal vs. external microphones, and the VOX icon.
Describes the lock function that prevents accidental changes to frequency settings and keypad controls.
Explains the PTT lock function that prevents accidental transmissions by disabling the PTT switch, and how to turn it on/off.
Describes the ANL feature for reducing impulse noise and how to activate it via the COMM SETUP menu.
Explains the radio's 200 user-programmable memories, including channel frequency, tag name, and flag assignment to groups like ALL, FLAG, GP1-GP8.
Guides on how to recall stored channels from memory, including selecting groups and navigating the memory list.
Details how to instantly store a selected frequency to memory with an automatically assigned tag name, or customize it via the MEMORY BOOK form.
Guides on how to delete specific memory entries or entire groups, including confirmation steps.
Describes how the scanner searches active channels in COMM, MR, and WX modes, pausing on signals and resuming after they disappear.
Explains how to select scanning bands (ALL BAND, COM BAND, NAV BAND) for the FTA-750L/FTA-550 models.
Details how to scan only the marked frequencies, similar to scanning all channels but restricted to selected ones.
Provides instructions on how to turn the internal GPS unit on and off via the SETUP menu, and notes on power saving.
Explains how to display position information in numerical, compass, or numerical with GPS status formats, and notes on units and time settings.
Instructions on how to save current position information to the memory book, with options to no change or edit details.
Details the logger function for recording location at regular intervals, including notes on power saving and logger operation alerts.
Guides on how to enter the NAVI mode to use the radio's navigation features, and how the last selected destination is displayed.
Explains how to set a destination by selecting from memory, history, or manual input, and how to initiate navigation.
Provides instructions for manually entering latitude and longitude coordinates to set a destination, and how to save it.
Lists the main categories within the SETUP mode: MEMORY BOOK, COMM SETUP, GPS SETUP, CONFIGURATION, and ABOUT.
Details settings for the COMM mode, including emergency call, automatic noise limiter, weather alert, and PTT scan stop functions.
Covers setting the power save operation for the internal GPS unit and enabling/disabling frequency recall during NAVI mode.
Explains how to configure radio operations and display settings, including dimmer and lamp settings.
Guides on how to reset the radio to factory defaults and how to check the software version and manufacturer information.
Summarizes default values and descriptions for MEMORY BOOK settings like ADD, EDIT, DELETE, and GROUP NAME.
Summarizes default values and descriptions for COMM SETUP settings including EMERGENCY CALL, ANL, WEATHER ALERT, SCAN BAND, etc.
Addresses an issue where the TX icon appears and the radio is inoperable when connecting a headset, suggesting proper plug insertion.
Recommends checking headset manufacturer specifications for compatibility and wiring, including pinout details.
A quick guide to saving frequencies to memory using the DIAL selector or keypad, and the SAVE key.
A quick guide on how to lock and unlock the dial and keys using the [On] key.
A quick guide on activating the GPS unit on the FTA-750L model through the SETUP menu.
A quick guide on entering NAVI mode and selecting destinations from memory or history.
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