To access Field Programming mode on your VX-10 Yaesu Vertex Standard transceiver for making programming changes, follow these steps: First, remove the battery. Next, remove the NiCd battery advisory label from the radio's rear. Then, unscrew the two keypad securing screws (do not remove the keypad itself). Now, install the contact plate (part number R0152390), tabs facing down, under the keypad screws. Replace the NiCd battery advisory label and reattach the battery. Press and hold the Lamp, PTT, and Power buttons simultaneously. The radio will power on, self-test briefly, and display "* SET ". This indicates you've entered Field Programming mode. Use the channel selector to choose between programming categories: " SET ", " PROG ", and " MRCH *". Within the SET category, press the A key to view the first setting; follow on-screen instructions to adjust settings. In the PROG category, press A to access the first item and make adjustments similarly. For the MRCH (Memory Channel) category, press A to select channels for editing. Use the channel selector to pick a channel for modifications. After completing changes in each category, press the B key to return to the main Field Programming mode menu (SET / PROG / MRCH). To exit Field Programming mode, power off the radio. Then, while powering it back on, press and hold the PTT and Lamp buttons. The radio will start in normal operating mode. For detailed programming options and settings within each category, please refer to the VX-10 Yaesu Vertex Standard transceiver manual.
