MFJ-868B Giant True Peak Reading SWR/Wattmeter 1.8-60 MHz
Instruction M
1
MFJ-868B Giant SWR/Wattmeter
Introduction
The
MFJ-868B Giant SWR/Wattmeter
is the World’s Largest HF SWR/Wattmeter.
The MFJ-868B measures peak or average forward and reflected power as well as
standing wave ratio. It is designed to operate on 1.8-60 MHz. The MFJ-868B has three
power scales, which are selected with the front panel slide switch. The high power scale
measures 0-2000 Watts forward or reflected power. The mid power scale measures 0-200
Watts forward and reflected power. The low power scale measures 0-20 Watts forward
and reflected power. MFJ’s exclusive
Power Saver
circuit turns the meter on only when
RF power is being measured. The MFJ-868B utilizes a large illuminated 6.5-inch Single-
Needle meter to read the SWR from 1:1 to
∞
.
Features
•
Huge Backlit Meter:
6.5 in. measured diagonally across the front.
•
Easy-to-Read Scales:
Large numbers and pickets make reading a breeze.
•
Power Saver Circuit:
Meter turns on only when transmitting.
•
Three Power Scales:
20/200/2000 Watt power scales.
•
Forward and Reflected:
Measures forward power and reflected power.
•
Peak or Average Reading:
Measures Peak or Average power.
•
Power or SWR:
Measures Power and SWR.
•
Easy-to-Set SWR:
Easy set for accurate SWR measurements.
•
Frequency Range:
1.8 - 60 MHz.
•
Input/Output Impedance:
50 Ohms.
FWD SET
PEAK
REF SWR
AVG
20W
200W
2kW
PWR
SWR
MFJ
SWR/Wattmeter
Giant
MFJ-868
OFF
MAX
MIN
ON
SWR SET
Figure 1: Controls
Controls
1.
20W / 200W / 2kW switch:
Selects between 20, 200, 2000-Watt power scales.
2.
PEAK/AVG switch:
Selects Peak or Average power measurement.
3.
SWR/PWR switch:
Selects Power or SWR measurement.
4.
REF/FWD switch:
Selects forward or reflected power measurement.
5.
SWR/SET switch:
Selects SWR measurement or set.
6.
SWR SET knob:
Sets full-scale deflection to measure SWR.
7.
ON/OFF switch:
Turns power to the unit and lamp on or off.
