3. GROUND
Post/wing nut type ground connector.
4. BALANCED OUTPUT
Two Nylon High Voltage post connectors for output to RF balanced twin-lead
antennas. A wire jumper must be present between Item 6 (on page 3) and
the lower post of Item 4 to use the balanced output.
5. COAX 2
Coaxial connector for output to Antenna Two.
6. END FED WIRE
Nylon High Voltage post #6 for output to a single-wire antenna.
(Do not use jumper from post #4 & #6.)
7. COAX 1
Coaxial connector for output to Antenna One.
8. BYPASS
Coaxial connector for output to dummy load or third coax output. Bypasses
tuner, but meter circuits remain active.
4. Installation
Carefully unpack your AT1KD from the packing carton and inspect it for signs of
damage. If any damage is apparent, notify the transportation carrier or dealer
immediately. We recommend keeping the packing carton for moving, storing or
reshipping the tuner.
Select a location for the AT1KD that allows the connectors to be free from any
possible contact during operation.
INSTALLATION PROCEDURES
1. Connect a coax cable from your transmitter or receiver to the RF INPUT
connector on the rear panel. Keep the cable as short as possible. If you
use a linear amplifier, connect your transmitter to the linear amplifier input
and the linear amplifier output to the AT1KD. Do not use more than 800
watts average (single tone) through the tuner.
2. Connect coax cable(s) from your antenna to COAX 1 or COAX 2 connectors
on the rear panel. These connectors are either direct from the transmitter
or through the tuned circuit depending on the setting of the DIRECT/TUNED
mode switch on the front panel.
3. If you are using a balanced feed antenna, connect a balanced line to the
BALANCED OUTPUT connectors and jumper the lower Nylon
posts as shown by (4) in the REAR PANEL CONNECTORS figure.
4. If using a single wire antenna, connect it to the lower post (6) without installing
jumper.
5. Connect a dummy load to the BYPASS (8) connector using a coax cable.
This lets you select the dummy load from the DIRECT/TUNED mode switch.
Any antenna that does not require the use of an antenna tuner may be
connected to the BYPASS connector, if desired.
BEFORE OPERATING
1. To avoid possible damage to the AT1KD, set INPUT, ANTENNA, INDUCTOR
and POWER RANGE switches as outlined in the table below before applying
transmitter power.
2. Begin tuning with your transmitter into the tuner set at a low output power
setting (50 to 100 W)
5. Tuning
1. Select the band and frequency of desired operation.
2. Set TUNE and INDUCTOR controls to the suggested setting (as
indicated in the following table) before applying transmitter power. Read only
the 3 digits closest to the bottom of the INDUCTOR indicator. Actual
settings may vary from antenna to antenna.
3. Set your transmitter 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 AT1KM is tuned. Do not exceed 800 watts average (single
tone).
54
BAND
TUNE
INDUCTOR
10 M
12 M
15 M
17 M
20 M
40 M
80 M
160 M
55
52
49
43
42
45
45
67
264
323
349
350
354
353
350-352
Actual
Suggested
Actual
Suggested
4
5
WARNING: DO NOT OPERATE THE AT1KD WITH THE COVER OFF
WARNING: SOME BALANCED OR END-FED ANTENNAS WILL PRODUCE
HIGH RF VOLTAGES AT THE OUTPUT POST CONNECTORS. RF BURNS
MAY RESULT IF TOUCHED DURING TRANSMISSION.
60 M
53
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