DRAKE L7 - Front Panel Controls

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FIGURE 3-1. FRONT PANEL CONTROLS
I. Multimeter: Indicates plate voltage, grid current, and forward or reflected watts as selected by
meter switches
(8).
2. Plate Current Meter: Indicates plate current.
3. Indicator Lamps: Indicate standby or operate condition,
SSB (high power) mode, and multimeter
function.
4. STBY Switch: When depressed, allows standby operation with the exciter connected straight
through to the antenna.
5. AGC Control: Adjusts the transmitting AGC threshold.
6. ON/OFF Switch: Turns the main power on and off.
7. MODE Switch: Selects highplate voltage for SSBoperation or lowplate voltage for CWoperation
oi for tuning.
8. Meter Switches: Select indication for Multimeter (1).
9. PLATE Control: Resonates the plate tank circuit.
10. BAND Switch: Selects input andplate tank components to resonate the amplifier on the selected
band.
11. LOAD Control: Adjusts the output impedance of the amplifier to match the antenna load
impedance.
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