Related Manuals for Chameleon Antenna CHA MPAS
Summary of Contents for Chameleon Antenna CHA MPAS
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Page 1: Antenna System
HF Modular Portable Antenna System (CHA MPAS) Operator’s Manual California - USA WWW.CHAMELEONANTENNA.COM VERSATILE – DEPENDABLE – STEALTH – BUILT TO LAST... - Page 2 CHA HYBRID - MINI / MICRO Page 2...
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Page 3: Table Of Contents
Products ......................23 References .............................. 24 Be aware of overhead power lines when you are deploying the CHA MPAS antenna system. You could be electrocuted if the antenna gets near or contacts overhead power lines. LEGO® is a trademark and/or copyright of the LEGO Group. ©2016 the LEGO Group. All rights reserved. -
Page 4: Introduction
High Frequency (HF) Modular Portable Antenna System (CHA MPAS). The CHA MPAS is designed to be the most versatile, high performance, and rugged portable / manpackable HF antenna available using the “LEGO® BLOCK” approach, as described by Survival Tech Nord. The core components of the antenna system, see plate (1), are: a CHA HYBRID-MICRO portable base, 60 feet of wire, a 10’8”... -
Page 5: Parts Of The Antenna
The CHA MPAS is comprised of the following components and sub-components, see plate (2): a. Hybrid Micro Base The Hybrid Micro Base provides a mounting base and impedance matching for the CHA MPAS. b. Antenna Wire The Antenna Wire is a 60 foot length of black insulated wire. - Page 6 HYBRID MICRO antenna. Wire Connector The Wire Connectors are located at one end of the Antenna Wires (b). UHF Socket The UHF Socket, SO-239, is located on the side of the Hybrid Micro Base (a). h. Antenna Connection CHA MPAS Page 6...
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Page 7: Antenna Configurations
Hybrid Micro Base (a). Antenna Configurations Using the supplied components, the CHA MPAS can be deployed into a number of configurations. Seven configurations (some configurations require optional components that are sold separately), see table (2), are described in this manual, each with unique performance characteristics. -
Page 8: Portable Vertical
8. Perform operational test. Portable Vertical The CHA MPAS with the optional CHA MIL EXT comprise the Portable Vertical configuration, see figure (2), which is a broadband short to medium range HF/VHF-LO antenna. This configuration, which is especially designed to be portable, is omnidirectional and provides ground wave communication on frequencies between 1.8 –... - Page 9 Use the following procedure to install the Portable Vertical configuration. Figure 2. Portable Vertical. Site Selection and Preparation 4. If used, place the terminal lugs of the 1. Select a site to deploy the CHA MPAS Portable counterpoise wires over the Counterpoise Vertical configuration. Best ground wave Connection (i) on the Hybrid Micro Base.
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Page 10: Horizontal Nvis
Horizontal NVIS The CHA MPAS Horizontal NVIS configuration, see figure (3), is a special configuration designed to provide good NVIS propagation on lower frequencies. It is predominately omnidirectional and also provides medium range sky wave propagation on frequencies above 10 MHz. It requires two supports that will enable the ends of the antenna to be raised to a height of 10 –... -
Page 11: Sloping Wire
Carabiner. Sloping Wire The CHA MPAS Sloping Wire configuration, see figure (4), is a broadband short to medium range HF antenna. It is a good general-purpose antenna, which provides acceptable ground wave and sky wave propagation, and can be Figure 4. Sloping Wire Configuration. -
Page 12: Inverted "V
15. Perform operational test. Inverted “V” The CHA MPAS Inverted “V” configuration, see figure (5), is a broadband short to long range HF antenna. This configuration will provide good NVIS and medium range sky wave propagation on all frequencies and long range sky wave propagation above 14 MHz. - Page 13 Figure 5. Inverted “V” Configuration. Site Selection and Preparation. 1. Select a site to deploy the CHA MPAS Inverted 9. Using a throw weight or some other method, “V” configuration. The site must have a support loop the Paracord over the support.
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Page 14: Inverted "L
Inverted “L” The CHA MPAS Inverted “L” configuration, see figure (6), is a broadband short to medium range HF antenna. This configuration tends to be unidirectional, favoring the end of the horizontal part of the antenna. It is also provides effective ground waves communication during the day time on frequencies between 1.8 –... -
Page 15: Tilted Nvis
17. Perform operational test. Tilted NVIS The CHA MPAS Tilted NVIS configuration, see figure (7), is a broadband short range HF/VHF-LO antenna. This is a special configuration designed to provide good NVIS propagation on lower frequencies. It is predominately omnidirectional and also provides medium range sky wave propagation on frequencies above 10 MHz. You can mount it on a stationary vehicle which has a tilt-able 3/8”... -
Page 16: Recovery Procedure
Hybrid Micro Base. You will not be using the Recovery Procedure To recover the CHA MPAS, perform the following steps: 1. Disconnect the Coaxial Cable from the radio set. 2. Lower the antenna to the ground or disconnect the Hybrid Micro Base (a) from the antenna mount. -
Page 17: Troubleshooting
13. Store components together. Troubleshooting 1. If using the Antenna Wire (b), ensure Wire Connector is securely connected. 2. Inspect Antenna Wire or Whip for breakage or signs of strain. 3. Ensure UHF Plugs are securely tightened. 4. Inspect Coaxial Cable assembly for cuts in insulation or exposed shielding. Replace if damaged. 5. - Page 18 Figure 8. SWR by Frequency Graph. Figure 9. Manpack Vertical Far Field Plots 7 MHz (left), 14 MHz (right). CHA HYBRID - MINI / MICRO Page 18...
- Page 19 Figure 11. Portable Vertical Far Field Plots 7 MHz (left), 14 MHz (right). Figure 12. Tilted NVIS Far Field Plots 3.7 MHz (left), 7 MHz (right). CHA HYBRID - MINI / MICRO Page 19...
- Page 20 Figure 13. Horizontal NVIS Far Field Plots 3.7 MHz (left) 7 MHz (right). Figure 14. Sloping Wire Far Field Plots 7 MHz (left) 14 MHz (right). CHA HYBRID - MINI / MICRO Page 20...
- Page 21 Figure 15. Inverted “V” Far Field Plots 7 MHz (left) 14 MHz (right). Figure 16. Inverted “L” Far Field Plots 7 MHz (left) 14 MHz (right). CHA HYBRID - MINI / MICRO Page 21...
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Page 22: Accessories
CHA MPAS wire configurations. Coaxial Cable Assembly. 50 feet of RG-58 with integrated RFI Choke. Used to connect the CHA MPAS to the radio set. This is a highly recommended accessory if you are not using a CHA RFI CHOKE. -
Page 23: Chameleon Antenna Tm Products
Small canvas or ballistic nylon bag to store antenna components. Chameleon Antenna Products The following products are available for purchase at Chameleon Antenna Go to http://chameleonantenna.com for ordering and more information. CHA F-LOOP – The CHA F-LOOP The F-LOOP was... -
Page 24: References
adjustment with most modern external antenna the CHA HYBRID - MINI / MICRO. The CHA TD is a HF tuners. broadband antenna specially designed for portable HF communication where rapid deployment and CHA TD Tactical Dipole LITE - The CHA TD LITE simplicity of operation is essential.