8 Front Panel Description
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1. POWER/SWR METER
Dual needle meter displays
FORWARD and REFLECTED power in Watts. SWR is
indicated where the two needles intersect on the red
scale.
2. PEAK HOLD
Select to read Peak Hold on the SWR me-
ter. Peak (#3) must be on for this to function.
3. PEAK
Selects between PEAK and AVERAGE Power
metering display.
4. RANGE
Two-position switch selects the range of FOR-
WARD and REFLECTED power displayed on the power
meter. When the RANGE button is OUT, the FOR-
WARD meter scale reads 300 Watts full scale and the
REFLECTED meter scale reads 60 Watts full scale.
When the RANGE button is IN, the FORWARD meter
scale reads 3000 Watts full scale and the REFLECTED
meter scale reads 600 Watts full scale.
5. POWER
Depress to turn on the backlight in the meter and
enable metering and 160 Meter functions. The jack on
1
2 3
6
8
9
4 5
7
Operating Your AT2KD cont’d 13
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tual settings will vary from antenna to antenna.
3. Set your transmitter/amp to a low power output. If your
transmitter has a TUNE position, select that position.
4. If you use a linear amplifier, set it to Standby. Do not use
the linear amplifier until the AT2KD is tuned.
Do not ex-
ceed 1500 Watts average (single tone)
.
5. Set RANGE switch to 300 W (button out).
6. Set the DIRECT/TUNED mode switch to BYPASS or the
position matching your antenna connection. To tune your
antenna, the switch selection must be set to: COAX 1
TUNED, COAX 2 TUNED, or COAX-BAL-WIRE. Se-
lecting COAX 1 DIRECT, COAX 2 DIRECT or BYPASS
bypasses the impedance matching network.
7. Rotate the TUNE and INDUCTOR controls for maxi-
mum noise or signal as heard on your receiver. Refer to
preset tuning chart below.
8. Key your transmitter and adjust the power level for a
reading of 100-150 Watts on the FORWARD scale. Ad-
just the TUNE and INDUCTOR controls for a minimum
REFLECTED reading while maintaining a FORWARD
reading of 50-100 Watts using your transmitter power
control.
9. Read the SWR on the red scale at the point where the
two needles intersect. Repeat adjusting the TUNE and
INDUCTOR controls until the lowest SWR reading is
obtained.
CAUTION:
When approaching the end stops of the
roller inductor, (readings of zero or 248) SLOW
DOWN. Running the roller too hard into the mechani-
cal end stops on either end of the roller inductor can
damage it.
