803C XXXXX
803C
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530 Short and Medium-Range Log-Periodic Antenna
HF communications in the 0–300 kilometer
range can be diffi cult. Ground waves have very
limited coverage over land, and skywaves radiated
by traditional HF antennas tend to skip over
the shorter ranges. The Model 530 is designed
specifi cally to support skywave communications at
short (0–500 km) ranges. The 530 directs energy
overhead to provide optimal support for shortrange circuits. In addition, at the higher frequencies
used for longer ranges, the 530 radiates signifi cant
energy at lower angles for medium- and longrange circuits.
The 530 is extremely useful for ground-air and
ship-shore applications. Its radiation pattern is
also suitable for secondary coverage of mediumrange circuits, significantly outperforming
traditional conical monopole and inverted cone
antennas. A comparison of the gain of the
530 with the gain of typical vertically polarized
omnidirectional antennas (see reverse) clearly
shows the superiority of the 530 for mediumrange communications.
Support skywave communications
at distances up 500 km and beyond.
The 530 is horizontally polarized, thus avoiding
the ground losses associated with vertically
polarized antennas. The efficiency of the 530
exceeds 95% throughout the band; no lossy
terminations are used.
Using only a single tower for support minimizes
the 530’s installation costs and real estate
requirements. The tower is made entirely
of 6061-T6 structural aluminum alloy—the
ideal material for antenna towers where long
life and corrosion resistance are important
considerations. Curtains and catenaries are
fabricated in TCI’s factory entirely of Alumoweld
stranded wire cables. All guy insulators are lowloss, glazed ceramic fail-safe types. No organic or
synthetic materials such as fi berglass or Kevlar
are used anywhere in the antenna. These features
ensure long life and low maintenance costs.
In periods of low sunspot activity, when high
effective radiated power is required to produce
suffi cient signal at the receiver, the Model 530
provides superior electrical performance. For
short-range communications with secondary
coverage of medium- and long-range targets,
the 530 outperforms all other HF antennas.
KEY FEATURES
❯
❯
❯
❯
❯
®
High-angle radiation for reliable
short-range communications
Horizontally polarized – no ground
losses
High power gain
Effective medium-range coverage
Rugged construction
530 System Details
°
°
°
°
40°
40°
30°
30°
20°
20°
10°
0°
10°
–5
0
5
20 MHz
–5
30 MHz
20 MHz
–10 –5 0 5
30 MHz
–10 –5 0 5
40°
30°
20°
0°
10°
50°
Azimuth and Elevation Patterns (Azimuth pattern at elevation angle of beam maximum) gain in dBi
2 MHz
2 MHz
20 MHz
0
–5
–10 –5 0 5
40°
30°
20°
10°
0°
5
10°
20°
30°
40°
50°
40°
30°
20°
10°
0°
40°
8 MHz
8 MHz
30 MHz
0
–5
–10 –5 0 5
40
30
20
10
0°
5
10°
20°
30°
40°
50°
40°
30°
20°
10°
0°
40°
20 MHz
0
–5
–10 –5 0 5
30°
20°
10°
0°
5
10°
20°
30°
40°
50°
30 MHz
40°
30°
20°
10°
0°
–10 –5 0 5
0
–5
30°
20°
10°
0°
5
10°
20°
30°
40°
50°
40°
30°
20°
10°
0°
Model 530
Specifications
Summary Specifications 530
Polarization
Direction of Beam Maximum 90° at 2 MHz, 90° at 8 MHz, 30° at 20 MHz, 20° at 30 MHz
Power Gain Relative to
Isotropic Antenna
Efficiency Greater than 95%
Azimuth Pattern Essentially circular
Shipping Weight and Volume
VSWR
Ground Screen Requirement None Required
Environmental Performance
Circular in horizontal plane. Either sense depending on requirements of
application. Consult TCI regarding proper sense of polarization.
6.5 dB at 2 MHz, 5 dB at 8 MHz, 6.5 dB at 20 MHz, 5.5 dB at 30 MHz
530-3 3500 lb. 150 cu. ft. (1600 kg. 5.9 cu. m.)
530-4 1900 lb. 95 cu. ft. (850 kg. 2.7 cu. m.)
530-5 3000 lb. 140 cu. ft. (1350 kg. 4 cu. m.)
• 2.5:1 maximum
• 2.0:1 maximum over 80% of frequency band
530-3 & 530-4: Designed in accordance with EIA Specication RS-222C for
loading of 225 km/h (140 mi/h) wind, no ice, or 145 km/h (90 mi/h) wind,
12 mm (1/2”) radial ice.
530-5: 201 km/h per EIA-222E, no ice.
❯ Table 1: Frequency Range & Size
Model Number Frequency Range
530-3-N 2–30 MHz 133 40.6 300 x 300 92 x 92
530-4-N 3–30 MHz 92 28.2 217 x 217 67 x 67
530-5-N 2.75–30 MHz 101 30.6 230 x 230 71 x 71
Height Width*
ft. m ft. m
Note: Replace “N” with power code from Table 2
❯ Table 2: Power Rating and Impedance Data
Model Number Input Impedance Power Handling Capability Connector
530-N-02 50 ohms Receive only Type N Female
530-N-06 50 ohms 1 kW avg. / 2 kW pk Type N Female
530-N-03 50 ohms 10 kW Avg. / 20 kW pk 1 5/8” EIA Female
530-N-28 50 ohms 5 kW Avg. / 10 kW pk 7/8” EIA Female
Note: Replace “N” with power code from Table 1
❯ Table 3: Gain of Model 530 vs. Typical Vertically Polarized Omnis
Path
Length
200 mi.
(333 km)
1000 mi.
(1600 km)
TOA Gain at 3 MHz (dBi)* Gain at 12 MHz (dBi)* Gain at 20 MHz (dBi)*
530
60° +6 –3 –1 +5 –4 +3 — — —
17° –1 +2 +3 0 –4 –4 +5 1 1
Inverted
Cone
Conical
Monopole
Inverted
530
Cone
*Gain calculated with antenna over average ground.
Conical
Monopole
530
Inverted
Cone
Conical
Monopole
Specialized Expertise in a Global Family
TCI International, Inc., a leading supplier of end-to-end, ITU-compliant RF spectrum
monitoring and management solutions, is a wholly-owned subsidiary of SPX Corporation.
Headquartered in Charlotte, North Carolina, SPX is a multi-industry, Fortune 500
enterprise with operations in more than 35 countries and approximately 18,000
associates worldwide. SPX team members collaborate across business segments and
borders to deliver greater effi ciencies and better ideas for helping customers succeed
and grow their businesses.
At TCI, this commitment to innovation serves civilian spectrum regulatory departments
and provides COMINT, ISR, and DF solutions for Military, National Security and
Intelligence agencies.
TCI has developed high-performance RF and spectrum monitoring solutions for more
than 40 years. Our complete, in-house hardware and software engineering capabilities
include RF/analog equipment design, system engineering and integration, digital Signal
Processing (DSP) design and implementation and expert client-server software design
and development.
An SPX Company
TCI INTERNATIONAL, INC.
3541 Gateway Blvd.
Fremont, CA 94538-6585 USA
TEL: 1-510-687-6100
USA: 1-800-824-8074
FAX: 1-510-687-6101
www.tcibr.com
Company proprietary
Data and specifi cations subject to change without notifi cation
Not for distribution without prior permission from TCI.
530-10-10-12
©2004-2012 TCI—All Rights Reserved
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