Icom M700 Mods Here

  • Result: 1.6–30 MHz continuous RX/TX.

    • The ICOM M700 (and its variants like the M700PRO and M700TY) was designed for marine use on ITU channels. For amateur radio operators, its stock frequency coverage is limiting. This guide covers the most popular, proven modifications—from simple jumper changes to advanced filter upgrades.

    ⚠️ DISCLAIMER: Modifying your ICOM M700 may void any remaining warranty, violate laws if done improperly (e.g., transmitting out of band), and requires technical skill. Always check your local regulations. Proceed at your own risk. icom m700 mods

    The M700 puts out a raw 150W PEP. Running this into a modern 100W-rated antenna tuner can melt toroids. The fix: Adjust the ALC (Automatic Level Control) threshold. Result: 1

    The M700 has no built-in narrow CW filter, making weak-signal work difficult. The ICOM M700 (and its variants like the

    If you want the "perfect" amateur-grade IC-M700, here is your shopping list of modifications:

    | Mod | Difficulty | Time | Benefit | | :--- | :--- | :--- | :--- | | MARS/CAP Unlock | Medium (Soldering) | 30 min | Transmit on all HF amateur bands | | Audio Coupling (C37/C133) | Easy | 15 min | Warm, clear receive audio | | Mic Bias & EQ | Medium | 20 min | Use modern condenser mics | | ALC Threshold (R28) | Medium | 30 min | Cleaner SSB output | | Noise Blanker Threshold | Advanced | 1 hour | Usable impulse noise reduction | | Arduino Digital Readout | Advanced | 2-3 hours | Digital VFO function | | Fan Thermostat Mod | Easy | 15 min | Improved thermal management |

    🧪 Test: After mod, verify you can tune to 14.200 MHz in USB and transmit a low-power carrier into a dummy load.