Related Manuals for Chameleon Antenna CHA TACYAGI-70
Summary of Contents for Chameleon Antenna CHA TACYAGI-70
- Page 1 Ultra High Frequency (UHF) Tactical Yagi Antenna (CHA TACYAGI-70) Operator’s Manual Nevada - USA WWW.CHAMELEONANTENNA.COM VERSATILE – DEPENDABLE – STEALTH – BUILT TO LAST Rev. 1/29/2025...
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Page 2: Table Of Contents
Table of Contents Introduction .............................. 3 UHF Propagation ............................4 CHA TACYAGI-70 Components ........................6 Handheld / Manpack Use.......................... 7 Extending the Collapsed Antenna ......................8 Tripod / Trekking Pole Use ........................10 Use with MPAS Ready Components ....................... 11 Operation of the UHF Tactical Yagi ...................... -
Page 3: Introduction
Thank you for purchasing and using the Chameleon Antenna Ultra High Frequency (UHF) Tactical Yagi antenna (CHA TACYAGI-70). The CHA TACYAGI-70 is designed for portable UHF operation, such as Summits on the Air (SOTA), Parks on the Air (POTA), camping or RVing, hill- topping, or on an apartment or condominium balcony. -
Page 4: Uhf Propagation
Another example is shown in figure (3). The mobile station in Toney moved to an intersection around 3 ½ miles southeast of the first location. Wade Mountain is now between the two stations and line of sight communications may not be possible without multipath propagation. CHA TACYAGI-70 Page 4... - Page 5 Troposphere to have an increase in temperature with increasing altitude before returning to normal. This is called a temperature inversion and sometimes it causes ducting. Ducting acts like a pipeline for radio waves and can enable communications over long distances. CHA TACYAGI-70 Page 5...
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Page 6: Cha Tacyagi-70 Components
CHA TACYAGI-70 Components The CHA TACYAGI-70 is comprised of the following components, see plate (2). CHA TACYAGI-70 Page 6... -
Page 7: Handheld / Manpack Use
Handheld / Manpack Use Setup of the CHA TACYAGI-70 for handheld / manpack use is quick and easy in the field (see figure [4]). Due to its light weight and small size when collapsed, it will easily fit in a daypack or backpack making it perfect companion for your handheld UHF transceiver when hiking or doing Summits on the Air (SOTA) activations. -
Page 8: Extending The Collapsed Antenna
Extending the Collapsed Antenna Use the procedure shown in plates (3) and (4) to setup the CHA TACYAGI-70 for handheld / manpack use. Plate 3. TACYAGI-70 Handheld Setup Procedure. CHA TACYAGI-70 Page 8... - Page 9 Plate 4. TACYAGI-70 Handheld Setup Procedure (continued). CHA TACYAGI-70 Page 9...
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Page 10: Tripod / Trekking Pole Use
Tripod / Trekking Pole Use The CHA TACYAGI-70 is easy to mount on a Tripod, Monopod, or a Trekking Pole with a camera mount, see figure 5. The advantages of this are: you don’t have to hold the antenna while operating;... -
Page 11: Use With Mpas Ready Components
Use with MPAS Ready Components The CHA TACYAGI-70 can use the MPAS Ready family of components to create a highly portable modular antenna system. Figure (6) shows some of the ways the TACYAGI-70 can be deployed using MPAS Ready components. The Spike Mount enables deployment of antennas anywhere you can drive it into the ground. -
Page 12: Operation Of The Uhf Tactical Yagi
SSB and digital communications are horizontally polarized. You can horizontally polarize the CHA TACYAGI-70 by holding it horizontal (parallel to the ground) or using the tilt-head of your tripod, as shown in plate (5). -
Page 13: Recovery Procedure
Recovery Procedure Use the procedure shown in plate (6) to recover the CHA TACYAGI-70 for storage in your pack. Plate 6. Procedure for packing the TACYAGI-70. Preventive maintenance tip: it is recommended that the Swivel Joints and bare Element ends be occasionally lubricated with Gardner Bender Ox-Gard Anti-Oxidant Compound. -
Page 14: Troubleshooting
8. Be sure to check any patch cables or adapters used. 9. If still not operational, connect a Standing Wave Ratio (SWR) Power Meter and check SWR. 10. If the SWR is still greater than 2:1, contact Chameleon Antenna for technical support. -
Page 15: Accessories
• CHA SS ADAPTER – The Stainless Steel Adapter has a 1/4-20 stud on one end and a 3/8-24 stud on the other. Used to mount the CHA TACYAGI-70 to a Universal Clamp Mount UCM), Jawmount, MIL Extension, or Porta Mast with a 3/8-24 socket. -
Page 16: References
American Radio Relay League, Newington, CT. 2. 1987, Tactical Single-Channel Radio Communications Techniques (FM 24-18), Department of the Army, Washington, DC. 3. Turkes, Gurkan, 1990, Tactical HF Field Expedient Antenna Performance Volume I Thesis, U.S. Naval Post Graduate School, Monterey, CA. CHA TACYAGI-70 Page 16... -
Page 17: Chameleon Antenna Tm Products
Chameleon Antenna Products Go to http://chameleonantenna.com for information about quality antenna products available for purchase from Chameleon Antenna – The Portable Antenna Pioneer. Chameleon Antenna products are available from these great dealers: DX ENGINEERING GIGAPARTS WIMO MOONRAKER RADIOWORLD UK R&L ELECTRONICS ML&S MARTIN LYNCH...
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