2m Yagi Beam Antenna | 144 MHz 10 Element Super-Light High Gain OWL G/T

Posted date: January 11, 2015in: AntennaNo Comments

OWL G/T Yagis Beam Antenna are specialized, ‘hot rod’ versions of the already high-performance OWL – Optimised Wideband Low impedance Yagi – design. Enhanced for weak signal VHF applications including EME (moonbounce), meteor-scatter and other extreme propagation modes; these are applications where both antenna gain and pattern are critical, hence the ‘G/T’ model suffix. G/T is an antenna figure of merit used for moonbounce work. G is the antenna gain in dB at the design frequency, and T is the equivalent noise temperature of the antenna in ºK.

InnovAntennas founder Justin Johnson, G0KSC, designed the OWL G/T models for extreme gain, along with carefully-controlled side- and rear-lobe levels, to achieve results best suited for the demands of the mid-VHF frequencies, in particular 2 meters. OWL G/T models boast the highest gain per foot of boom and, consequently, class-leading G/T figures.

OWL G/T antennas marry a high gain, low-impedance Yagi design with a folded dipole wide-bandwidth feeder cell which yields a direct 50-Ohm impedance. Making these beams perfect for stacking was a key design objective.

The through-the-boom element construction utilizes elements electrically connected to the boom to reduce eddy currents; what’s more, they’re very light in weight, important when building a multi-antenna array (or traveling on a DXpedition). The light weight also makes them ideal for rovers.

Every OWL has tight element spacing around the driven element. This has increased the stability over traditional low impedance Yagis. Additionally, the OWL has been optimized for a 12.5 Ohm feed-point impedance (if fed as traditional split dipole). When the split dipole is swapped for the OWL’s folded dipole, the feed impedance becomes a cool 50 Ohms thus – as with all InnovAntennas Yagis – no troublesome matching device is needed!

All InnovAntennas are designed with the very latest modeling software packages costing tens of thousands of dollars, not 30-year-old consumer software costing around $100. Accuracy in both the modeled and real worlds is assured.

Accessories available include an InnovAntennas ferrite balun optimized for 2m use. For antenna stacking, there are two- and four-port InnovAntennas power splitters featuring market leading return loss and a four Yagi H-Frame with spacing optimized for this antenna.

InnovAntennas’ ultra-quiet antennas should be paired with state-of-the-art low noise LNA preamps to realize their full potential, we recommend the German made SSB Electronic LNA-200 and MHP-200 models, both available from the Force 12 Superstore. Also available are ultra-rugged AlfaSpid antenna rotators with the RAU and RAK models both suitable for turning multiple 144-OWL-10 Yagis (and much more) and the AlfaSpid RAS will effortlessly point a H-Frame populated with 4 OWLs at the moon as it traverses your sky. Also in stock is rotator cable custom made for AlfaSpids, low loss coax cable and connectors.

Talk to us about custom cable assemblies and special pricing on complete EME Systems (“EME in a Box”)!

PERFORMANCE

Gain: 15.25 dBi @ 144.1 MHz

F/B: 28.68 dB @ 144.1 MHz

Peak gain: 15.29 dBi

Gain 33 feet above ground: 21.07 dBi

Peak F/B: 28.87 dB

Power rating: 5 kW

VSWR: below 1.2:1 from 144 to 145 MHz

MECHANICAL

Boom length: 19.12 feet / 5.83 m

Weight: 9 lbs / 4.1 kg

Safe wind speed: 127 mph / 204 kph

Turning radius: 7.52 feet / 2.29 m

Vertical stacking: 9.84 feet / 3 m

InnovAntennas builds products with the best quality materials, not the cheapest and most profitable!

Marine grade stainless steel hardware
Genuine Stauff insulation clamps
Mill finished boom and elements for highest levels of accuracy

This model is made with a 1/2 inch (12.7 mm) and 3/8 inch (9.525 mm) diameter tube OWL loop and 1/2 inch (12.7 mm) elements with a wall thickness of 0.047 inch (1.2 mm). The boom is 3/4 inch square tubing. High performance for years to come.

No figures here are made up as they are in some Ham Radio ads; all performance figures are verified in the very latest software simulation packages with some antennas being professionally confirmed on an antenna range.

Price : $ 281.54 – See More: