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General| Mode | FM |
|---|---|
| Voltage | 13.8 VDC |
| Impedance | 50 ohms |
| Type | Mobile |
| Frequency range | 144-148 MHz (VHF), 430-450 MHz (UHF) |
General specifications covering frequency range, channel steps, stability, emission type, supply voltage, and current consumption.
Details specifications for the receiver, including circuit type, IFs, sensitivity, selectivity, and rejection.
Provides transmitter specifications such as RF output power levels and modulation system.
Lists standard accessories like microphones, mounting brackets, and power cords.
Details optional accessories such as smart controllers and tone squelch units.
Describes the segmented digits, icons, dot-matrix display, and indicators on the front panel.
Explains the function of the DIAL knob for tuning, selecting settings, and duplicating microphone functions.
Details the LED indicator that glows red when the transmitter is active.
Explains how the sensor adjusts LCD backlighting for optimal visibility.
Describes the Type-'M' (SO-239) jack for antenna connection, noting European versions use Type-'N'.
Details the 3.5-mm mini phone jacks for separate audio output and internal speaker disabling.
Explains the power supply connection and requirements for the transceiver.
Describes interface connections for packet TNC, cloning, and Personal Computer Control.
Details the condenser microphone element and its proper usage for speaking.
Explains the glow and blink indicators for alternate functions and channel selection.
Describes the functions of numbered and special keys on the MH-39 microphone keypad.
Details primary and alternate functions of various MH-39 microphone buttons, including DTMF tone generation.
Provides descriptions for specific buttons like 1MHz step tuning, CTCSS, paging, and scanning.
Explains the UP/DWN buttons for tuning and menu navigation, and other top controls.
Describes how to assign functions to P1 and P2 keys for simplified operation.
Details all indicators, segment displays, and symbols shown on the FT-8500's LCD screen.
Guide to inspecting the transceiver upon unpacking and verifying all components and controls.
Step-by-step instructions for physically connecting the MH-39 microphone to the transceiver.
Provides guidance on selecting and connecting antennas for optimal performance and safety.
Details requirements and considerations for installing the transceiver in a vehicle, including mounting.
Instructions for choosing a location and securing the transceiver using the mounting bracket.
Guidance on connecting the transceiver to a DC power source, including warnings and polarity.
Information on the optional AC power supply and its connection requirements.
Details on connecting optional external speakers and their effect on the internal speaker.
Table detailing normal, alternate, and hold functions for each MH-39 keypad button.
Lists alternate functions and power-on key combinations for the MH-39 keypad.
Explains how to assign custom functions to special keys (P1/P2) for simplified operation.
Essential checks before first-time operation: antenna, power supply, and system connections.
Instructions for powering the transceiver on and off using the DIAL knob or PTT button.
Guides on setting receiver volume and squelch threshold independently for VHF and UHF.
Explains how to choose the main and sub channels and display DC voltage.
Methods for toggling between main and sub channels for operation and tuning.
Describes the IBD feature that indicates active band reception and its configuration.
Details simultaneous reception on two VHF or UHF channels and selecting the main channel.
Instructions on programming custom functions to P1/P2 keys for operational convenience.
How to select high, mid, or low transmitter RF output power using the microphone buttons.
Explains using the ARS feature for automatic repeater shift and manual operation.
Guides on switching between VFO tuning and memory recall modes for operation.
Describes the organization of programmable memories into banks and special-purpose slots.
Explains how to use the Spectra-Analyzer to view station activity and search for signals.
Details how the Spectra-Analyzer displays signal strength, center markers, and span markers.
Describes how channel step size, signal width, and space width affect spectrum display.
Guides on adjusting LCD contrast and backlighting levels for optimal visibility.
Explains the feature that mutes audio from one receiver during dual receive operation.
Compares manual and auto mute features, including selection and activation.
Information on extending receive range and enabling AM mode for aeronautical frequencies.
Instructions on changing the ratio of VHF/UHF memory banks and potential data loss.
How to select and operate from stored memory channels.
Setting up and recalling the instant-recall Home channel for quick access.
Storing independent transmit frequencies for repeaters with non-standard shifts.
Retuning stored memories and saving changes to memory slots.
Temporarily erasing memory data and understanding status indicators like VACANT and ERASE.
Quickly storing current channel data into the first vacant memory slot.
Operating the transceiver using only stored memory channels for simplified use.
Details on busy and clear scan modes, carrier and time resume operations.
How to mark memories to be skipped during scanning while retaining manual access.
Scanning between two user-defined frequencies within selected channel steps.
Activating PMS scanning quickly by holding a specific key.
Automatically checking for activity on a priority channel while operating on VFO or other memories.
Preventing inadvertent adjustments by locking keypad buttons, DIAL, and PTT.
Accessing repeaters with CTCSS tones and silent monitoring of busy channels.
Activating the CTCSS Bell to alert calls and configuring ringer settings.
Introduction to DTMF paging and selective calling features using 3-digit codes.
Simple mode where both stations use the same 3-digit DTMF sequence for communication.
Receiving signals prefixed with personal or group codes, triggering alerts and display.
Storing codes for calling specific stations or groups for paging purposes.
Read-only memory for storing the calling station's ID code for later display.
Viewing the last received DTMF code and checking if it opened the squelch.
Storing personal ID and other codes, and setting transceiver response to paging calls.
Activating code squelch to only open squelch for specific DTMF sequences.
Receiving paging calls and understanding the response sequence and ringer alerts.
Feature to overcome manual switching between paging and code squelch for compatible transceivers.
Automatic response modes: acknowledging pages or forwarding calls.
Adjusting the delay between keying the transmitter and sending the first DTMF digit.
Details on composing and sending messages, including TX message slots and received message storage.
Procedure for sending stored or manually entered messages, including ID inclusion.
Details on available ringer melodies (Beeper, User-programmed, CW Monitor) and their selection.
Storing DTMF tone sequences for autopatch systems and assigning names.
Creating and storing custom melodies for CTCSS Bell or DTMF Paging.
Configuring the transceiver to automatically turn off after a period of inactivity.
Limiting transmission time to prevent accidental long key-downs.
Displaying the current battery or DC supply voltage.
Turning off the audible beep feedback for key presses on the MH-39 microphone.
Explains how to select and enter characters for memory names, including Japanese kana.
Provides a detailed table mapping keypad presses to alphanumeric characters and symbols.
Describes how to enable, disable, or reset settings by holding keys during power-on.
Details the pin-out and specifications for connecting TNCs via the rear panel DATA jack.
Instructions on configuring channels and enabling the cross-band repeater function.
Steps for transferring all stored data from one FT-8500 to another using a clone cable.
Tips for navigating modes and resolving issues like no display or invalid entries.
Procedures for resetting user-programmed keys and the transceiver's CPU to factory defaults.
Introduction to controlling the transceiver via a PC using the FIF-232C interface box.
Explains how to use hexadecimal codes to send commands for transceiver control.
Information on menu-driven PC software for transceiver programming and cloning.
Table listing functions and their corresponding hexadecimal opcodes for PCC control.
Illustrates how to construct PCC commands in BASIC for controlling transceiver functions.
Overview of the menu structure, including number of menus and entries.
Details on programmable memory channels, banks, naming, and special-purpose memories.
How to temporarily erase and restore memory data, and understand status indicators.
Programming the instant-recall Home channel with frequencies and names.
Entering names to identify VFO operation and saving entries.
Configuring channel step sizes and selecting CTCSS tones for repeater access.
Enabling ARS for automatic shift selection and setting repeater shift values.
Activating DTMF autodialer features and using stored tone sequences.
Storing DTMF sequences and melodies, and renaming memories.
Settings for message format, storage, and CW monitor for DTMF messages.
Writing messages into transmit memory slots and selecting them for sending.
Managing received messages and enabling CW monitor for message decoding.
Selecting and configuring DTMF paging codes, including personal ID and response settings.
Adjusting transmit delay and selecting automatic paging response modes.
Configuring DTMF Paging ringer melodies, repetition, and alert types.
Configuring CTCSS Bell ringer repetition and playback.
Setting automatic power-off based on inactivity and limiting transmission time.
Playing back DTMF paging melodies and configuring one-touch paging.
Selecting CTCSS Bell ringer tones and intervals.
Adjusting LCD contrast and backlighting levels for optimal visibility.
Displaying the current DC supply voltage.
Configuring direct frequency entry, keypad beeper, sub band display, and intelligent band display.
Selecting scan speeds and resume modes for scanning operations.
Configuring data jack operation and baud rate for packet communications.
Enabling or disabling the display of alphanumeric name tags.
Controlling frequency display and selecting menu language.
Locking keypad buttons, DIAL knob, and PTT to prevent accidental adjustments.
Configuring mute duration, level, and automatic muting for dual receive.
Adjusting signal width, spacing, and span markers for Spectra-Analyzer view.
Enabling AM mode for aeronautical band reception.
