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HF Antennas
High Frequency/ Short Wave Antennae.
See Also: Antennas, Broadband Antennas, Log Periodic Antennas, Directional Antennas, Biconical Antennas, Horn Antennas, Isotropic Antennas, Loop Antennas, Antenna Software, Antenna Analyzers, Dipole Antennas
- LBA Group, Inc
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Wideband Swept Antenna, Cable Analyzer
SWR TRUE 3013
• A cost-effective SWR Analyzer covering all Cellular and radio communication bands 30-2700 MHz• Measures transmition & antenna impedance, frequency, SWR, return loss, and bandwidth by sweeping band of interest• Built-in synthesized RF sweep generator• SWR TRUE 3013 Antenna Analyzer gives you quick and reliable antenna and cable trouble-shooting capabilities• 5 in 1 analyzes for antenna tuning and control• Measured results can be stored for further analyzing and documentation on internal and external storage media• Time stamp and operator ID capability included• LCD Display works in direct sunlight and with backlight in dark areas
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Array Solutions OCF
Series Dipoles
Thank you and congratulations on your purchase of the Array Solutions, OffCenter Fed HF Dipole Antenna System. This antenna was built with the same quality workmanship and attention to detail as our military, government and commercial wire antenna products. It is ideal for ARES/RACES, MARS/CAP, USCG Aux., Red Cross, Salvation Army and other disaster and relief organization use. It is built especially for high duty cycle, harsh environmental applications. The use of the finest quality components available and our “overbuilt” quality construction means your new antenna will last for years under the most difficult conditions, while requiring little or no maintenance.
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Noise Location Package
Type HFDF
National RF’s Type HFDF high frequency location system is a proven noise hunting and location directional antenna system that allows you, in many cases, to walk right up to the source of High Frequency (HF) noise! Used by several power companies around the United States, professional noise hunters, and other communications specialists, the HFDF has located noise sources that emanated from pole power transformers, arcing electric fences, CATV in-line amplifiers, plasma TV screens, and even Marijuana grower’s heating lamps! The system incorporates several plug-in, tunable magnetic loop sensors of a proprietary National RF design, that cover the frequency range between 1.8 MHz and 55 MHz. The unit is packaged in a hand-held, lightweight metallic enclosure, with a pistol grip and a magnetic compass mounted on top. The compass is used to get magnetic bearings to the noise source, which may be plotted on a map to triangulate, and ultimately pin-point, the location of the noise source. In certain cases, our customers tell us that they have been able to walk right up to the interfering noise source and correct the situation on the spot!
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VECTOR-GUN HANDHELD DIRECTION FINDING ANTENNA SYSTEM
HFDF
National RF's Type HFDF active directional antenna system consists of a high gain RF amplifier coupled to a tunable Faraday shielded loop antenna. Several loop antenna assemblies are available to provide coverage of frequencies in the HF and low VHF spectrum. Due to the nature of a Faraday shielded loop, the antenna exhibits a sharp null through the diametric center of the loop. This null is used to determine the direction of incoming radio signals or to locate electrical noise being radiated from some source. The internal high gain amplifier is used to compensate for the inherent inefficiency of the actual loop at the operating frequency. Overall, the system dynamic response is about +6 dB as compared to the dynamic response of a dipole. To aid in the direction finding process on strong signals, an internal 30 DB attenuator is provided. As the loop antenna presents a bi-directional response, tri-angulation may be required to eliminate the ambiguous signal direction. The line of site of the incoming signal is determined by listening for a signal null on the receiver or by watching the receiver’s S-meter.
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Antenna Tuner HF+6m
DU 800 T
The DU 800 T optimizes the performance of your antenna and transmitter or SWL receiver by providing adjustable impedance matching. The DU 800 T also measures the Power and Standing Wave Ratio (SWR), which allows you to tune the indiceted SWR to the lowestpossible ratio for the selected transmit frequency.
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Omnidirectional HF Antennas
Kratos Defense & Security Solutions, Inc.
Broadband dipole products include the horizontally polarized 1765 antenna for short-to-medium range communications, the 3065 antenna that reduces ground-area requirements, and the 5065 series designed for locations where space is at a premium, including rooftops.
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Fixed Directional HF Antennas
Kratos Defense & Security Solutions, Inc.
These antennas are intended for fixed station applications and are based on the single mast, transportable 747CD Log-Periodic Antenna Series. The variable take-off angle array configuration results in a high-performance antenna well suited to applications where communications over varying distance is required.
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Rotatable Directional HF Antennas
Kratos Defense & Security Solutions, Inc.
Kratos’ horizontally polarized rotatable log-periodic antennas are constructed with wire radiators supported by a strong and unusually lightweight support structure.
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Beacon Transmitters for Radio Amateurs
Is a radio beacon, whose purpose is the investigation of the propagation of radio signals. Most radio propagation beacons use amateur radio frequencies. They can be found on LF, MF, HF, VHF, UHF, and microwave frequencies. Microwave beacons are also used as signal sources to test and calibrate antennas and receivers
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Antenna Analyzer
iP30z
The iP30z iPortable Antenna SWR Analyzer is designed for field use and is an excellent choice for working with the Buddipole line of antennas. This compact battery powered unit has an easy to read frequency display and measures SWR as well as Z (impedance) in the HF Band. The SWR readings quickly show you the actual VSWR measurement. This is the easiest way to adjust your antenna quickly in the field without any guesswork.
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Antennas
The CAES Antennas portfolio encompasses virtually the entire radio frequency spectrum, from the HF Band, where wavelengths dwarf buildings, to the millimeter wave band, where thousandths of an inch make all the difference, and offers unparalleled product diversity with an extensive product line of advanced antennas and antenna arrays.
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HF Amplifier
Prometheus
The design of the Prometheus is the result of over 10,000 hours of research and development, encompassing hundreds of hours of mathematical analysis, computer simulation and modeling, and numerous prototypes and experiments spanning over a five year period. The result is a rugged, commercial quality amplifier designed to run cool under 1500W continuous SSB, CW or RTTY, with special ferrite transformers and combiners designed for full power operation even on 160 meters. Although our custom transformers are more expensive and difficult to manufacture than competing designs, they do not saturate or heat up beyond the Curie point, thereby becoming irreversibly damaged and destroying the RF transistors in the process.
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Antenna
The multifunctional antennas are designed to meet the harsh environmental conditions and limited space availability found on submarines. This is achieved by utilizing a unique stack array enclosed within a protecting fibre glass dome.The antenna characteristics has been developed in such a way so that aircrafts can also operate in the airspace for data and voice communications next to ship-to-ship or ship-to-shore communications. In this way aircrafts e.g. AWACS act as relay stations to transfer radio signals. Although the dipole of the lizard has a primarily plane oriented radiation characteristic – up until an elevation angle of 60 degrees-, submarines can still track aircrafts up to an elevation angle of 90 degree. This guarantees complete coverage of the surrounding airspace in 360 degree horizontal level as well as in 180 degree vertical level.With this outstanding multifunction antenna capability Aeromaritime significantly extends the military communications for submarines by offering this unique capability.
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Antennas
Flann offers a wide range of antenna designs including Standard Gain Horns, Sectoral Horns and Lens Horn Antennas. Additionally Flann has a comprehensive custom design capability for bespoke antennas
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Custom Antennas
As a custom antenna manufacturer, our embedded and external custom antennas are designed to meet unique customer requirements and deliver exceptional performance utilizing the latest cellular, WiFi, Bluetooth, LMR, LoRa, ISM, IoT, and GPS/GNSS technologies.
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Horn Antennas
Horn antennas can be used for emissions and immunity testing. These antennas are constructed using light weight aluminum with a corrosion resistant conductive coating for indoor or outdoor use. Each antenna is individually calibrated. The calibration data and certificate will be shipped with each antenna.The high gain reduces input power requirements to generate high electromagnetic field levels for immunity testing. High gain also increases antenna sensitivity to low level signals.
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Antennas
Double Ridge Horn 1-18GHz RH-118. BI-LOG 30-3600MHz. Biconica 30-300MHz. LOG 200-1000MHz. TRIPLE LOOP 10KHz-30MHz.
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Submarine Antenna
AT-4125
Combined antenna system for the VHF, UHF, IFF, GPS and INMARSAT-C (optional HF-Rx, Link 16 and IRIDIUM) frequency ranges for mobile applications with limited space availability, uniquely designed for submarines.
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Antenna Products
NSI-MI Technologies has an extensive history in the development of innovative antennas for precision antenna test and measurement applications, as well as other wireless applications. NSI-MI antennas are designed, developed and manufactured in our factory by our talented staff of antenna design engineers with decades of experience. Our antenna products and services fulfill the needs of numerous markets, including the military and defense, aerospace, automotive, satellite communications, and wireless industries.
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Antenna, Biconical
EM-6912A | 30 Mhz – 300 MHz
A balun, feedline, and element cage give the Electro-Metrics EM-6912A response curves that are almost linear, making it ideal for swept measurements. An added benefit is that the EM-6912A has an improved BALUN design, which makes it insensitive to changes of orientation while vertically polarized. Readings obtained will be the same no matter which element is closest to the ground plane, eliminating a potential source of measurement error.
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Antennas
Specialist antennas for signal intelligence, radiomonitoring and super resolution direction finding.
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FLAT Antennas
CTG recently developed a new paradigm in linearly-polarized antennas called the Flat Lens Antenna Technology or ‘FLAT’. These antennas have directivities similar to conventional dual-ridge antennas, but in a much lighter and “flatter” package. They can be used as a direct replacement for conventional horns for a wide variety of applications. They are made using composites technology so are also rugged and are ideal for both indoor and out-door applications.
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DAS Antennas
In-Building Distributed Antenna System (DAS or i-DAS) antennas are low profile and designed to be mounted discreetly to a hard or tiled ceiling. Used in a series throughout large buildings, campus areas or even in below ground sections of a building the antennas can provide a distributed LTE or Wi-Fi signal to where it is required most. With a growing demand for in-building connectivity and higher data rates, larger smart or connected buildings require a series of antennas in order to distribute signal around the building or campus area.
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Antenna
Beijing KeHuan Century EMC Technology Co,.LTD
Antenna is adjusted using the receiver, use, testing, measurement, etc.
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GNSS/GPS Antennas
Our GNSS/GPS antenna solutions are designed for applications such as time synchronization, commercial tracking, and precision navigation covering all GNSS frequency bands.
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Conformal Antennas
Conformal Antennas, which often aim to replicate the performance of conventional or protruding antennas, but in a form factor that is flush or near flush to the aircraft skin, are available in a wide variety of shapes and sizes as necessitated to meet the outer mold line of specific airframes.
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HF Communication Equipment
MS 2000
The Meltronics HF/SSB system provides a reliable voice communication over 2 to 29.99MHz frequency range and is designed to meet the most diverse requirements. The HF system is used to establish communication between Air to Ground station, Air to Air and Air to Ship. This System is suitable for Aircraft, Helicopter and Ships communication applications. The HF transceiver has beyond line of sight communications providing both voice and data services. Systems is a digital, Microprocessor controlled, synthesized unit that utilizes DSP technology to increase performance and versatility.
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Sinuous Antennas
Sinuous Antennas provide RF performance similar to comparably-sized planar spiral antennas, while also supporting reception of multiple signal polarizations. CAES offers a variety of sinuous antennas to meet your design needs.