Tuning Control Panel

TCP Control Panel

Overview

The Tuning Control Panel (TCP) is used to manage external communication frequencies, including VHF, HF, and SATCOM. Pilots can quickly input or switch frequencies and configure communication settings using line select keys, mode select keys, a numeric keypad, and preset function keys.

Panel Function Details

Line Select Keys

Press:
- If the scratchpad line is empty, the corresponding frequency channel is selected.
- If the scratchpad line contains data, pressing writes that frequency to the associated channel.

Mode Select Keys

Press:
- Displays the tuning page for the selected communication type (e.g., VHF, HF, SAT).

Numeric Keypad

Press:
- Used to enter numerical characters or frequency values into the scratchpad.

Clear (CLR) Key

Press:
- Deletes the last character in the scratchpad or clears the entire frequency entry.
- In the VHF or HF preset frequency page, the first press deletes the frequency in the selected row (except emergency frequency); pressing twice activates "CLEAR PAGE" mode. In this mode, pressing any line select key clears all deletable presets on that page.
Press and Hold:
- Clears the entire scratchpad line.

Frequency Transfer (XFR) Key

Press:
- Swaps ACTIVE (active) and STBY (standby) frequencies.

Note

If the ACTIVE frequency is not in the preset list, the system will recall the lowest-numbered preset.
If the ACTIVE frequency is in the list, the presets will cycle downward.
If STBY is a preset-numbered frequency, use the STBY key to cycle through them.

Standby (STBY) Key

Press:
- Cycles through standby frequencies in VHF and HF pages.
- Press ↑ to scroll up, ↓ to scroll down.

Previous Page (PREV PAGE) Key

Press:
- Scrolls to the previous preset frequency page.

Next Page (NEXT PAGE) Key

Press:
- Scrolls to the next preset frequency page.

Power (PWR) Key

Press and Hold:
- Turns the TCP on or off.