Optimized Compact High Performance HAM Radio Antenna for 2 Meter + 440 Bands & CompaCounterpoise Ground. Antenna: Only 7.5 long. Reliable leaf spring style NMO connector on antenna for standard center-stud style NMO mounts. Antenna Type: Unique Electric/Magnetic Field Diversity Science & Technology Patented Design Patent No.
With a special design construct of spiraled and cylindrical metal sheeting including'extended flat monofilar spiral Tesla-like coils', all resistance, inductance and capacitance (matching) is efficiently done by the physical metallic geometric form of the antenna itself, as opposed to internal or external (lossy) components of other designs. "Magnetic Field Resonator": This built-in resonating matching system is an effectual component of the electromagnetic E & H fields production, resulting in better performance than expected for such a small antenna. With a particularly strong magnetic near field, proximity noise is reduced.
And resulting diverse effective electromagnetic fields further enhance performance in our world of (dynamic) obstructions, mitigating signal drops, reducing flutter, and increasing reliable range. Product Narrative: Small Rugged Antenna with High Performance.
Superior Science Performance with Vehicle Location Changes and Movement. Superior Science Performance in NLOS (Non-Line-Of-Sight) Obstructed Environments such as behind buildings, in garages, behind other vehicles, and in valleys. Digital & Analog VHF Amateur (HAM) Radio. Digital & Analog UHF Amateur (HAM) Radio.Broad elevation coordinate signal pattern and elliptical polarization of COMPACtenna provides stabilized signals in our common Non Line of Sight environments, with temperature and humidity inversion pathways as well as tropospheric propagation, and SATELLITE communications. Hotter conditions such as higher ambient temperature, sun exposure, lesser air flow, etc. Gain: Nominal 3(+) dBi. Performance is greater than predicted based on gain alone in NLOS (Non-Line-Of-Sight) environments which is the world we live in. Best (V)SWR's especially on VHF frequencies are generally seen when mounting at upper corners of a vehicle. Signal pattern is substantially omnidirectional at corner locations. If a magnet mount is used, the'Flat' style often provides best SWR's. (V)SWR's can vary with size and shape of vehicle and accessories.
(V)SWR's seen by the radio are often lower due to coaxial/feed-line attenuation. Always check SWR; operate only per transmitter/amplifier specifications. See my separate listing for this antenna & the Workman 3 magnetic mount for mobile use.
CompaCounterpoise: Heavy Duty Ground Plane Counterpoise Radial Kit optimized for gain, pattern & SWR on VHF & UHF for. Easy installation: mush of the unit is pre-assembled. 18" elements to 3" diameter plate attachment; elements optimally angled in factory at 45 degrees below the horizon. Plate has NMO mount (as shown above).Stainless Steel hose clamps provided allow for 1 1/4"- 1 3/4" OD mast/pipe. THIS LISTIN IS FOR 2M/440 ANTENNA & COUNTERPOISE. Items located in Willoughby, Ohio. This item is in the category "Consumer Electronics\Radio Communication\Antennas\Ham, Amateur Radio Antennas". The seller is "initialstop" and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Mexico, New Zealand, Switzerland, Norway, Croatia, Republic of, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Panama, Trinidad and Tobago, Guatemala, El Salvador, Honduras, Jamaica, Antigua and Barbuda, Aruba, Belize, Dominica, Grenada, Saint Kitts-Nevis, Saint Lucia, Montserrat, Turks and Caicos Islands, Barbados, Bermuda, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Cayman Islands, Liechtenstein, Luxembourg, Monaco, Martinique, Nicaragua, Peru, Paraguay, Reunion, Uruguay.