The CU-2041 is a 1-kW automatic HF antenna coupler for the 1.6 to 30
MHz frequency range. It is capable of matching the impedance characteristics
of a wide range of non-resonant antennas to the 50-ohm impedance required
by the power amplifier.
DESCRIPTION
The antenna coupler is a tuned impedance matching network used in both
the transmitting and the receiving paths of an associated HF radio. By matching
the antenna impedance, antenna system efficiency is optimized for both transmit
and receive. It also permits receive signals to bypass the tuned network
for simplex operation widely separated transmit and receive frequencies.
This weatherproof coupler utilizes digital tuning with switched reactive
elements in the tuning network. The antenna feedpoint impedance analyzed
by the controlling microprocessor. The network tuning elements are switched
into the proper configuration for an impedance match. This tuning method permits
rapid and accurate antenna matching.
The CU-2041 is a member of the URG-III product line of HF communications
equipment. It is designed to be mounted at the base of the antenna. It receives
dc operating power and control signals directly from its associated 400 watt
or 1000 watt power amplifier. Alternatively, it can be powered directly from
a 115/230 VAC single-phase source.
KEY FEATURES/USER BENEFITS
Tunes multiple antenna types - including 16-foot and 32-foot
(5-m and 10-m) vertical whips and 80-foot (25-m), or longer, long-wire antennas
The antenna impedance is always matched to within 1.3:1 VSWR
(1.2:1 typical)
Maximum RF input power of 1000-W continuous, pep or average
Automatically tunes over the 1.6 to 30 MHz frequency range,
typically within 3 seconds
Remembers previously-tuned frequencies as presets, re-tuning
to these within 250 milliseconds
Preset tuning increases efficiency of ALE operations
Digital tuning via latching relays minimizes power consumption
Environmentally-sealed enclosure for mounting directly at
the antenna feed-point
Built-In Test (BIT) routines quickly isolate any faults
Controlled and monitored via standard EIA data bus from the
RT-2200 receiver-exciter
Internal blower permits operation at ambient temperatures
up to 50 degrees C.
SPECIFICATIONS
Parameter
Specifications
Frequency Range
1.6 - 30
MHz
RF Input
Power - Maximum
1,000
Watts
Duty Cycle
Continuous
Load Impedance
VSWR - Maximum
Non-resonant
whip and long-wire antennas
Tuned Input VSWR - Maximum
1.3:1, 50-ohm system
Tune time
5-seconds max
(3-seconds typical)
Tune time to learned preset
250 milliseconds max.
(115 milliseconds
typical)
Number of
learned presets
2000
max
Prime Power
115/230
VAC, 47/63 Hz, single-phase,
200 VA OR
28 VDC at 6
amps max.
(can be supplied by associated power amplifier or separate
power cable)
Ambient
Operating Temperature
-30 to +55-deg. Celsius
Size
15
in H, 20 in W, 26 in D
(381 mm H, 508 mm W, 660 mm D)
Weight
70 lbs (32 kg)
SELECTION GUIDE
Description
Part
Number
CU-2041 Antenna Coupler
822-0779-001
SUPPORT OFFERINGS
Product Information Material is normally available at no charge and
can be obtained by contacting GS Customer Relations:
