Operating Instructions
Frequency Selection Modes
DV14307.03 Issue 04 March 2016 Transceiver Family 620X 101
In transmit mode several user actions such as changing frequency selection mode or channel spacing
mode, which are normally allowed in receive mode, are blocked. (As an exception in standard mode
the "Preset" frequency may still be changeable, even during transmission).
No intercom operation is possible in transmit mode.
The sidetone (demodulated audio of the emitted signal) is available on the headphone output. The
transmit mode automatically deactivates the speaker.
Note: Transmit mode is automatically terminated (return to receive mode) after
120 seconds of continuous transmitting even if PTT is still pressed. In this case
"STUCK PTT" is indicated (refer to page 113). For initiation of a new
transmission, /PTT line needs first to become inactive.
3.5. Frequency Selection Modes
Following frequency selection modes are available on AR620X and RCU6201:
• Standard mode
• Direct tune mode
• Channel mode
• Scan mode
The "Standard Mode", "Direct Tune Mode" and "Channel Mode" provide different user interfaces for
convenient selection of the operating frequency. These three frequency selection modes are
selectable by consecutive short pressing of "MDE" key.
They appear in the following order: "Standard Mode", "Direct Tune Mode" "Channel Mode",
"Standard Mode", and so on. When toggling between the three modes the active frequency always
remains the same and active.
"SCAN Mode" is a sub-mode of standard mode and used for monitoring two frequencies at the same
time. A 2 seconds press on "↕/SCN" key activates/deactivates the scan function.
The availability of the modes depends on enabling or disabling in the "Configuration Settings".
3.5.1. Standard Mode
Press the "MDE" key until the standard mode page appears.
The standard mode page displays the active frequency in the top line and preset frequency in the
bottom line.
Changing the active frequency is not possible in standard mode (only available in direct tune mode)
but changing the preset frequency is possible.
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