Out of the box, the TKM-707 is locked to the marine bands (2–27.5 MHz in simplex/half-duplex). For amateur use, it’s almost useless. For marine operators, there are still performance tweaks that can bring this 1990s workhorse into the modern era.
The internal chassis contains several variable resistors (VR) for fine-tuning audible alerts: Beep Tone: to adjust the volume of the keypress beeps. Alarm Tone: Switch to Alarm Test mode and use to set the desired level for the 2182 kHz alarm tone. Antenna System Tuning: kenwood tkm707 mods
He held ENT and CLR. The screen flickered. “SVC” appeared. He scrolled to page 7. 0x4E read 0x12. He tapped 0x7F. Saved. Out of the box, the TKM-707 is locked