🧪 Test: After mod, verify you can tune to 14.200 MHz in USB and transmit a low-power carrier into a dummy load.
If you want the "perfect" amateur-grade IC-M700, here is your shopping list of modifications: icom m700 mods
| 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
| Mod | Difficulty | Tools Needed | Benefit | |------|------------|--------------|---------| | MARS/CAP (full TX) | Medium | Soldering iron, diode cutter | Ham band transmit | | TX audio mod | Easy | Soldering iron, capacitor | Clearer voice | | CW filter add-on | Hard | Oscilloscope, filter, PCB | Weak signal CW | | Fan control | Easy | Resistor/thermal switch | Quiet operation | | PLL recap | Medium | Desoldering pump, caps | Reliable lock | If you want the "perfect" amateur-grade IC-M700, here
A common failure point in the IC-M700 is the incandescent bulbs behind the LCD display and meter. They run hot and burn out, making the radio unreadable at night.
Modification: