Specifications

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4. OPERATING CONTROLS
FRONT PANEL CONTROLS
ON/OFF SWITCH…………………………………………....Mains power on and off
STBY/TX……………………………………….…………Amplifier standby / operate
PLATE METER……………………..0 – 1.5A, monitors the plate current of the valve
GRID METER…………………………...0 – 400mA, monitors the grid current which
should not rise above 300mA
GRID / RF OUT…………………..switches the grid meter to monitor relative RF O/P
NB. On the 70cm Discovery there is no relative RF O/P, so the switch only
operates in the GRID position.
(LOAD CONTROL……………………………..Adjusts the loading of the strip-line)
Internally preset
TUNE CONTROL…………………………...…….Adjusts the tuning of the strip-line
ANODE LED…………...Indicates an internal valve flash-over (for re-set see page 7)
WAIT/GRID LED………………………..Lit until the valve has warmed up and then
goes out when the amplifier is ready to use
If this LED comes on during use it indicates that
there is a fault (see note on page 7 for reset)
READY LED……………………………. ... .Shows amplifier is ready for operation
TX LED…………………………………………Shows when the amplifier is ON AIR