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WHEATSTONE BRIDGE IS INCLUDED IN THE MFJ 9219 MANUAL, AVAILABLE FROM MFJS
WEBSITE, OR FROM EN. WIKIPEDIA. ORG/ WIKI/ WHEATSTONE BRIDGE.  BECAUSE IT
IS A RESISTIVE BRIDGE, SOME TRANSMIT POWER IS DISSIPATED IN THE BRIDGE
DURING THE TUNING PROCESS WHEN MEASURING SWR.  AN ADVANTAGE IS THAT YOUR
TRANSMITTER IS PROTECTED FROM HIGH SWR CONDITIONS WHILE TUNING, BECAUSE THE
WORST SWR YOUR TRANSMITTER CAN EVER SEE IS 2 1.  THE DISADVANTAGE IS THAT
DURING THE TUNING PROCESS, YOU CAN DISSIPATE UP TO 100 OF YOUR TUNE UP
POWER IN TWO OF THE THREE BRIDGE RESISTORS DURING HIGH SWR CONDITIONS,
ASSUMING YOUR TRANSMITTER CAN DELIVER FULL POWER INTO A 2 1 SWR.  OPERATING
THE MFJ 9219 OPERATION OF THE MFJ 9219 CAN BE A LITTLE CONFUSING AT FIRST.
THERE ARE THREE SWITCHES THAT NEED TO BE USED IN THE PROPER MANNER.  THE
TUNE/BYPASS SLIDE SWITCH PUTS THE T TUNER IN SERIES WITH YOUR TRANSCEIVERS
RF OUTPUT.  THE METER ENABLE/OPERATE PUSHBUTTON SWITCH PLACES THE
WHEATSTONE BRIDGE IN SERIES WITH THE TRANSCEIVERS RF OUTPUT.  THE SWR/PWR
PUSHBUTTON SWITCH LETS YOU MEASURE SWR USED FOR TUNING OR RF POWER, USING
THE INTERNAL DUMMY LOAD WHEN THE METER ENABLE/OPERATE SWITCH IS IN THE
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