Allows storing entire Ham band segments instead of just a few fixed frequencies.
The IC-M700 was built for harsh marine environments, prioritizing clarity over high-fidelity amateur audio. You can optimize the audio response for armchair copy on the ham bands. AGC (Automatic Gain Control) Tuning
Marine microphones are designed for high-noise environments and can sound "thin" on amateur bands.
Altering radio equipment can void warranties and may impact the device's compliance with FCC or other national regulatory standards. Always operate within the parameters of your license and local regulations.
: Hosts a collection of over 100 Icom modification documents , including specific guides for the M700's power and lock-out settings. Go to product viewer dialog for this item. icom m700 mods
: Remove the top and bottom covers of the radio. Locate the logic unit board behind the front display panel.
The Icom M700 is a "tank" of a radio. The most valuable modifications are not necessarily functional expansions, but : replacing the cooling fans, upgrading the backlighting to LEDs, and replacing aging electrolytic capacitors. Frequency expansion is possible but requires technical skill to maintain a clean signal.
To make the radio more usable on amateur radio networks where operators might drift, you can increase the RIT range up to ±1.5 kHz.
The Icom M700 remains a reliable and effective marine VHF radio, and modifying it can enhance its performance, functionality, and user experience. However, it's essential to carefully consider the benefits and risks of any mod, ensuring that you're making informed decisions about your radio and onboard systems. If you're unsure about any aspect of the modification process, consult with a qualified technician or Icom support specialist to ensure a successful outcome. Allows storing entire Ham band segments instead of
Requires a custom daughterboard or significant soldering to the logic unit. 3. Audio & Microphone Upgrades
To allow full front-panel programming of banks A and B, ensure that jumper W33 (W1033) on the Logic Board is NOT installed.
The following modifications are standard for making the IC-M700 more user-friendly for amateur radio operators. 1. Frequency Expansion (MARS/CAP Mod)
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The challenge here is practical rather than technical. The cloning software was designed for DOS operating systems and can be temperamental on modern hardware. However, running the program within , a free DOS emulator, often resolves compatibility issues. Old Windows 95 or 98 machines can also be sourced from hamfests specifically for programming these radios.
Although not a simple "mod," adding a narrow CW filter helps significantly if the radio is being used for Morse code.
Why? Because beneath its utilitarian grey faceplate lies a 150-watt, bulletproof HF transceiver with a receiver that rivals modern mid-tier rigs. However, the M700 has a secret: it is artificially restricted . To turn this marine radio into a true amateur powerhouse, you need to perform a series of well-documented, time-tested modifications.