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MFJ-925 Super-Compact IntelliTuner Automatic Antenna Tuner Instruction Manual

Front Panel

MODEL

MFJ-925

AUTOMATIC ANTENNA TUNER

200 Watts SSB / CW

MFJ IntelliTuner

POWERALT

TUNE

SWR TUNE

Figure 2. MFJ-925 Front Panel.

• SWR LED: A green LED that illuminates when the SWR is 1.5 or less.

• TUNE LED: A red LED that illuminates when the automatic tuning is in progress.

• TUNE Button: Has three different functions based on the length of time you press and hold it before

releasing. Press [TUNE] quickly (less than 0.5 second) to bypass the tuner. One beep indicates

bypass mode, where RF from the transmitter goes directly to the antenna with no matching. A second

quick press toggles the tuner back to its last L/C setting, and the tuner responds with two beeps.

Press [TUNE] for 0.5 to 2 seconds to start the automatic tuning process. Tuning starts when [TUNE]

is released after the 0.5-2 second hold-time. The transmitter must be keyed first with at least two

watts of power. When the SWR is already below the target SWR, pressing [TUNE] will fine-tune the

match for a lower SWR, if possible. When the automatic tuning is completed, a series of beeps

indicates the tuned SWR where one beep indicates SWR of 1.5 or less, two beeps indicate SWR of

1.6 to 2.0, three beeps indicate SWR of 2.1 to 2.5, and four beeps indicate SWR of 2.6 to 3.0. For

SWR above 3.0, “SWR” (di-di-dit di-dah-dah di-dah-dit) will be sent on CW.

Note: You can reverse the two functions above by pressing and holding the [TUNE] button for

approximately 10 seconds. I.e., when the [TUNE] button is pressed and held for 10

seconds. You will hear two beeps. Now pressing [TUNE] momentarily starts the tuning

process, and pressing and holding the [TUNE] button for 0.5-2 seconds puts the tuner

into the bypass mode.

“StickyTune” allows for one-handed tuning operation. Normal tuning requires keying the transmitter

with one hand and using the other hand to push the [TUNE] button to start the tuning process unless a

transceiver interface cable is installed. When StickyTune is enabled, the tuning process starts

automatically when the transmitter is keyed with at least two watts of power regardless of the SWR.

This works in both automatic and semi-automatic modes. To toggle the StickyTune mode on and off,

press and hold the [TUNE] button for two seconds. One beep indicates on and two beeps indicate off.

Default is off.

Note: StickyTune resets to OFF when the power is cycled or after tuning.

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Alinco DX-801 Manual de instrucciones Pagina 10