WARNING: Balanced antennas will produce high
RF voltages at the output post connectors. RF
burns may result if touched during transmission.
6 Installation
1-800-773-7931 WWW.PALSTAR.COM
Unpacking
Carefully remove the AT5K from the shipping carton and inspect
it for signs of damage. If any damage is apparent, notify the trans-
portation carrier or dealer immediately.
We recommend keeping
the packing carton for moving, storing or reshipping the tuner
to us for repair if required.
Location
Select a location for the AT5K that allows the connectors to be
free from any possible contact with people, pets, or objects during
operation and with unrestricted air flow for cooling.
Installation Procedures
Connect a coax cable from your transmitter 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 AT5K.
Connect coax cable from your antenna to the COAX 1 or COAX
2 connector on the rear panel. These connectors are either direct
from the transmitter or through the tuned circuit, de-pending on the
setting of the OUTPUT SELECTOR switch on the front panel.
For coax feed (unbalanced) the BALANCED/COAX switch on the
front panel must be in the OUT position. This grounds the lower
end of the roller inductor, allowing coax feed.
For a balanced feed antenna connect a balanced feed line to the
white BALANCED OUTPUT posts (back panel). Note that for bal-
anced operation, the BALANCED/COAX switch on the front panel
must be in the IN position, and an LED above the switch will light,
indicating balanced feed.
Connect a dummy load to the BYPASS 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.
Specifications 15
1-800-773-7931 WWW.PALSTAR.COM
Front Panel Indicators and Controls
Metering
Dual movement cross needle power and frequency
compensated coupler
Controls
Input Tuning
Variable capacitor (600 pF, 6kV Peak)
Antenna Tuning
Variable capacitor (600 pF, 6kV Peak)
Inductance
35 µH roller inductor 10 ga. plated copper wire
rated at 10 amps and 5kV
Antenna Selector Switch
6 position: Coax 1 tuned and tuner bypass;
Coax 2 tuned and tuner bypass;
Bypass coax connector;
Balanced antenna
Switch wafers are ceramic (7kV/10A rated)
Power Range Switch
2 position 300 W /3000 W
Rear Panel Connectors
Coax
SO239 connector (silver/gold/TFE)
Balanced Line
Dual High Voltage Nylon66
TM
terminal post
12 VDC Input
For meter light and relays -- 2.1mm conn. ()
Other
Frequency Coverage
1.8 — 29.5 MHz
Power Maximum
5000 W PEP SSB, 3500 W single tone continuous
Impedance Range
10 to 2000
Ω
NOTE: Power Range p.14
Balanced Output
1:1 current type Balun at input-Ferrite
Dimensions
16” Wide x 8” High x 18” Deep (incl. terminals)
Weight
25 lbs.
Materials
Chassis, brackets, and top cover are gold chem-film
coated aluminum (.090) & powder coated.
Front Panel
Front panel is matte powder coated and screened.
