Palstar AT1KM Owner's Manual - page 6
6
Specifications
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Front Panel Indicators and Controls
Metering
Dual movement cross needle power and frequency
compensated
coupler
Controls
Input Tuning
Dual-stator differential capacitor (440 - 0 - 440) pF, 3
kV) with 6:1 precision vernier drive
Inductance
24 µH roller inductor; 12 ga. Wire wound on steatite
ceramic core, silver plated bar/wheel 6 position:
Coax 1 tuned and tuner bypass, coax 2 tuned and
tuner bypass, bypass and balanced antenna
Antenna Selector Switch
6 position: Coax 1 tuned and tuner bypass
Coax
2
tuned
and
tuner
bypass
Bypass
and
balanced
antenna
Switch wafers are ceramic (3kV rated)
Power Range Switch
2 position 300 W /3000 W
Rear Panel Connectors
Coax
1
SO239
connector
Coax
2
SO239
connector
Bypass
SO239
connector
RF INPUT
SO239 connector
Balanced Line
Dual High Voltage Nylon66
TM
terminal post
End –Fed Wire
Dual High Voltage Nylon66
TM
terminal post
12 VDC Input
Adaptor for meter light 2.1 mm con. (center positive)
Other
Frequency Coverage
1.8 — 30 MHz
Power Maximum
1200 W PEP SSB, 800 W single tone continuous
Impedance Range
20 to 1500
Ω 160 m to 10 m (assuming resistive
load) Reduce power for lower Z range
Balanced Output
4:1 Ruthroff voltage type balun
Dimensions 5.3”H
x
10.6”W
x 12.5”D (incl. terminals)
Weight
8
lbs.
Materials
Chassis and top cover is 11 ga. (.090) aluminum
that has been chem.-film treated in gold color. Front
Panel powder coated and epoxy screened.
Front Panel Description 11
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1. POWER/SWR METER Dual
needle meter displays FORWARD and
REFLECTED power in watts. SWR is meas-
ured where the two needles intersect on
the red scale.
2. LAMP A two position button selects
whether the meter is illuminated.
3. RANGE Two-position switch selects the
range of FORWARD 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 RE-
FLECTED meter scale reads 600 watts full
scale.
4. INDUCTOR 26 µH continuously vari-
able ceramic roller inductor driven by a
crank handle. Coupled to the crank handle
is a gear-driven precision mechanical
counter.
5. TUNE Continuously adjustable differen-
tial capacitor.
6.DIRECT-TUNED MODE SWITCH
Six-position rotary switch selects an output
coaxial connector with direct mode which
bypasses the tuner and tuned position
which passes antenna through the tuner
components.
a. DIRECT BYPASS selects BYPASS COAX con-
nector bypassing the impedance matching circuit
but providing SWR, FORWARD and REFLECTED
meter readings.
b. DIRECT COAX 1 selects COAX 1 connector
bypassing the tuner matching circuit but providing
SWR, FORWARD and REFLECTED meter read-
ings.
c. DIRECT COAX 2 selects COAX 2 connector
bypassing the tuner matching circuit but providing
SWR, FORWARD and REFLECTED meter read-
ings.
d. TUNED COAX 1 selects COAX 1 connector
through the impedance matching T circuit.
e. TUNED COAX 2 selects COAX 2 connector
through the tuner matching T circuit.
f. BALANCED OUT selects the balanced and End
Fed Wire output connectors located after the
impedance matching circuit.
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