The original unit only has 48 memory channels. Advanced users often replace the internal SRAM to increase this significantly (up to 480 channels).
Before diving into soldering irons and jumper wires, let's understand the "why." The Icom M700 was designed for the marine service (ITU channels). Out of the box, it covers 1.6–30 MHz in transmit, but only on marine SSB frequencies. Most hams want: icom m700 mods
For those looking to go beyond basic frequency unlocks, advanced hobbyists have documented more complex upgrades: The original unit only has 48 memory channels
Requires a custom daughterboard or significant soldering to the logic unit. 3. Audio & Microphone Upgrades Out of the box, it covers 1
If you enjoy the smell of rosin flux and the satisfaction of pulling a weak signal out of the noise using a rig you hot-rodded yourself, buy an M700. Open it up. Perform these mods. And join the nets with a piece of radio history that now performs like a modern classic.