440-18X, 420-450 MHz

The 440-18X has replaced our proven 440-18.  It is being redesigned to ship in a 48" long package to save on shipping. 

FEATURES:

M2 is always trying to design and build new antennas to fit the needs of amateur radio operators. The “X” series of antennas are all designed to keep the packaging under 48” long to minimize oversize surcharges applied by shippers. The “X” series antennas offer the same performance as its predecessor, but with shorter boom sections.The boom sections also have a thicker wall for added strength.A side benefit of the “X” series antennas are that they are more portable with the smaller sections.The 440-18X replaces our very popular 440-18. The 440-18X is a computer optimized broadband yagi featuring an excellent pattern and good gain across its bandwidth. It can be mounted vertically or horizontally and is ideal for stacking two or more for additional gain. Light weight yet sturdy construction keep the cost low and the performance high. Use it for ATV, OSCAR, FM, LONG HAUL TROPO, ETC. We guarantee you will be impressed. The heart of the 440-18X is a unique Driven Element Module with superior weather resistance and power handling abilities. All connectors are O-ring sealed to the CNC machined block and internal connections are sealed in a space-age silicone gel with a dielectric strength nearly 4 times greater than air. The Balun coax connectors are triple O-ring sealed. Other key mechanical and electrical parts are CNC machinedfrom 6061-T6 aluminum and all hardware except U-bolts is stainless steel.The 440-18X offers you uncompromising performance, enduring mechanical construction, and long term electrical integrity.

SPECIFICATIONS:

Model ......................................... 440-18X
Frequency Range ......................... 420 To 450 MHz
*Gain ......................................... 16.5 dBi
Front to back ............................... 24 dB Typical
Beamwidth .................................. E=27° H=32°
Feed type .................................... Folded Dipole
Feed Impedance. ......................... 50 Ohms Unbalanced
Maximum VSWR .......................... 1.5:1 Average
Input Connector .......................... “N” Female

Power Handling ........................... 1.5 kW
Boom Length / Dia ...................... 135”’ / 1” To 3/4”
Maximum Element Length ............ 14”
Turning Radius: ........................... 69’
Stacking Distance ........................ 51” High & 52” Wide
Mast Size .................................... 2”
Wind area / Survival .................... 0.68 Sq. Ft. / 100 MPH
Weight / Ship Wt. ........................ 5 Lbs. / 7 Lbs.

 *Subtract 2.14 from dBi for dBd