Optimized Compact High Performance HAM Radio Antenna for 2 Meter + 440 Bands & CompacCounterpoise Bundle. The 2M/440+ : All the high performance of the 7.5 model 2M/440, PLUS an additional 1.5dB of gain.
It is for those where 9 is allowable/desirable and the operator wants that extra'edge'. 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. 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.Maximum Duty Cycle at max. Hotter conditions such as higher ambient temperature, sun exposure, lesser air flow, etc. Gain: Nominal 5(+) dB-MEG.
Due to diverse EM Fields of the Magnetic Field Resonator, performance is greater than predicted based on (singular polarization/peak gain) field-range/anechoic chamber gain studies 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. (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. View photo for example of antenna placement.
SEE MY LISTING FOR SEPARATE 3 MOUNT OR ANTENNA & MOUNT BUNDLE. Always check SWR; operate only per transmitter/amplifier specifications. CompacCounterpoise: Heavy duty ground plane counterpoise radial kit optimized for gain, pattern & SWR. On VHF & UHF for COMPACtenna model antenna's. Excellent for Base Station/ Repeater use particularly with installation below 100-150' above ground /HAAT.
Where non-line-of-sight propagation is more substantial. 200 Watts up to 225 MHz, 100 Watts at higher frequencies. Use lube provided for NMO threads, center contanct and gasket, hand tighten securely. 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.