MFJ-869 MFJ Giant automatic SWR/Wattmeter
Instruction Manual
©
2009-2010 MFJ Enterprises, Inc.
3
Front Panel
SWR FWD
POWER
MODE
PEAK
ALARM
ALRM
MODEL MFJ-869
MFJ GIANT
SWR / WATTMETER
automatic
PEAK
REF
200 2K
20
POWER
Figure 1. MFJ-869 Front Panel.
•
SWR/Wattmeter:
The single-needle meter measures SWR, forward and reflected power. It operates
whenever the unit is powered on. The SWR scale measures standing wave ratio of 1 to infinity. The
low power scale measures 0 to 20 watts forward or reflected power. The mid power scale measures 0
to 200 watts forward or reflected power, and the high power scale measures 0 to 2000 watts forward
or reflected power.
The power meter default condition is auto ranging, which automatically sets the meter scales
according to the input RF power to the wattmeter. Forward power greater than 20 watts automatically
sets the meter to the mid power range; forward power greater than 200 watts automatically sets the
meter to the high power range. Forward power less than 150 watts automatically set the meter to the
mid power range; forward power less than 15 watts automatically set the meter to the low power
range.
