MFJ-926B HF Automatic Remote Antenna Tuner
Instruction Manual
2010 MFJ Enterprises, Inc.
11
Appendices
POWER-ON OPERATIONS
(Press and hold buttons while turning on the power.)
Press and hold + to start the self test.
POWER
TUNE
POWER
Press and hold + then press 1 time to reset factory defaults.
ANT
TUNE
POWER
Press and hold + then press 2 times to delete current memory bank.
ANT
TUNE
POWER
Press and hold + then press 3 times to perform total reset.
ANT
TUNE
POWER
Press and hold + then press 4 times to test the power-down circuitry.
ANT
TUNE
POWER
Press and hold + then press 5 times to test the relays.
ANT
TUNE
POWER
Press and hold + then press 6 times to calibrate the frequency counter.
ANT
TUNE
Press and hold + then press 7 times to calibrate the SWR bridge.
POWER
ANT
TUNE
Press and hold + + to delete current antenna memory.
POWER
ANT
TUNE
For the + operations, not pressing or pressing it more than seven times
will cancel the operation after idling four seconds, beep two times and then resume normal operation.
POWER
ANT
TUNE
Figure 2. Power-On Operations.
Resetting the Tuner
Each time the tuner is powered off, the microprocessor saves all memories and configurations to non-
volatile memory. If the tuner is not working properly, even on initial power on, try resetting to the factory
defaults.
Factory Defaults
The unit is shipped with the following default settings:
•
Inductance
0
µ
H
•
Capacitance
0 pF on antenna side
•
Memory
Bank 1A
•
Tuning Mode
Automatic
•
Sticky-Tune
Off
Note:
Resetting to factory defaults does not erase the antenna memories.
