803C XXXXX
803C
XXXXX
550 Inverted Cone Antenna
The Model 550 is an excellent choice for omnidirectional HF communications, where both
ground wave and skywave coverage are required.
The 550’s large diameter/height ratio provides
excellent VSWR and pattern performance over
a very wide frequency range— up to 20:1 for the
Model 550-6 that operates at full effi ciency down
to 1.6 MHz—making it one of the few broadband
antennas optimized for the lower maritime bands.
The true wideband capability of the 550
is achieved with full radiation efficiency. The
antenna uses no tuners, special coupling units,
terminations, resistors or lossy elements to
achieve its high bandwidth, nor does it use any
techniques or devices to couple RF energy to the
ground, a technique sometimes used to increase
bandwidth at the expense of effi ciency.
Combine ground waves and skywaves
for omnidirectional HF.
The 550 is the simplest and safest antenna to
erect in its class. The structure is fully stable
during the rigging sequence, without the need
for temporary guys. The antenna does not use a
rigid ring to maintain the shape of the cone, which
can be diffi cult to install safely. Once erected, the
Model 550 has outstanding structural rigidity,
without troublesome defl ections and mechanical
oscillations that occur in antennas using rigid rings.
As with all TCI antennas, the Model 550
employs high-quality, exhaustively tested
components and materials. All radiators and
catenaries are Alumoweld, a wire composed of a
high-strength steel core and a highly conductive,
corrosion-resistant coating of aluminum. All
feedline and radiator insulators are made of
high-strength glazed alumina, a material with
an extremely low loss tangent, which is virtually
impervious to the effects of UV and salt spray.
Neither fi berglass nor other synthetic materials
are used anywhere in the antenna. A working life
of 25 years or more is standard with the Model 550.
KEY FEATURES
1.6–32 MHz – covers entire maritime
❯
mobile service
Single tower
❯
2.0:1 VSWR maximum anywhere in
❯
band
Fully effi cient
❯
Rugged and safe to erect
❯
550 Summary Specifi cations
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An SPX Company
Model 550
Specifi cations
Polarization Vertical
Radiation Patterns
Input Impedance 50 Ohms
VSWR 2.0:1 or less in specifi ed frequency range
Environmental Performance
Power Capability
❯ Frequency and Size Data
Model Number
p=power (see below)
550-1-p 1.9-32 MHz 122.0 37.2 250.0 76.2
550-2-p 2.3-32 MHz 102.0 31.0 210.0 64.0
550-3-p 2.8-32 MHz 82.0 25.0 176.6 53.9
550-4-p 3.8–32 MHz 62.0 18.9 133.5 40.7
550-5-p 5.5-32 MHz 42.0 12.8 92.4 28.2
550-6-p 1.6-32 MHz 142.0 43.3 294.0 89.6
ELEVATION PLANE PATTERNS Gain in dBi over perfect earth
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2 f
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Elevation: See patterns at right
Azimuth: Circular with ±0.75 dB
Designed in accordance with EIA Specifi cation RS-222C for loading of 190
km/h (116 mi/h) wind (higher environment models available)
See “Power and Impedance Data” below.
No matching unit is needed.
Frequency Range
–10 –5 0 5 10
–10 –5 0 5 10
Height Diameter*
ft m ft m
*measured from extreme guy points
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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
❯ Power and Impedance Data
Model Number
f=frequency
(see frequency
and size data)
550-f-02 Receive Type N Female
550-f-03
550-f-04
550-f-05
550-f-06
Power
Handling
Capability
10 kW Avg /
50 kW PEP
25 kW Avg /
50 kW PEP
5 kW Avg /
10 kW PEP
1 kW Avg /
2 kW PEP
Connector
1-5/8” EIA
3-1/8” EIA
7/8” EIA
Type N female
❯ Optional Equipment
• Lighting kit (may increase maximum VSWR to 2.2:1)
• Lighting arrestor/static drain kit (may not be
adequate for transmitter protection circuits)
• DC ground choke for transmitter protection
circuits (may increase maximum VSWR to 2.5:1)
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7 f
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Company proprietary
Data and specifi cations subject to change without notifi cation
Not for distribution without prior permission from TCI.
550-11-05-12
©2004-2012 TCI—All Rights Reserved
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