spe - 12 - 8 - 0 34/ c /pk page 1 of 6 specification part no. : fw.81 .sma.m product name : meteor 135 mhz 0dbi flexible whip monopole omni - directional antenna sma male connector feature : ip67 housing 1/4 wavelength robust but flexible inner steel whip high efficiency outdoor antenna advanced rf design and materials rohs compliant
spe - 12 - 8 - 0 34/ c /pk page 2 of 6 1. introduction the meteo r fw.8 1 is a 0dbi 135 mhz ism band 1/4 wavelength monopole flexible whip antenna with omni - directional pattern optimized in the azimuth for wide coverage range in typical 135 mhz applications such a s wireless m - bus metering. it is also used in remote asset monitoring application s, alarms, paging systems and private mobile radio services . the meteor has a ip67 housing. the antenna like all low frequency monopole antennas needs to be mount ed to a me tal plate to radiate. for a waterproof integration to a metal box a waterproof panel mount sma connector or cable assembly can be provided. tnc and n - type antenna versions are also available. this whip is made up of a flexible inner steel core covered by tpu so extremely resistant to collisions and maintaining its original shape and rf performance. customized frequency and gain versions can be supplied.
spe - 12 - 8 - 0 34/ c /pk page 3 of 6 2. specification table meteor fw.81 frequency ( m hz) 135 peak gain (dbi) * 0 dbi average gain (db i) * - 3.9 efficiency (%) * 4 0% impedance ( ? ) 50 polarization linear radiation pattern omni input power (w) 50 mechanical dimensions (mm) 353x 16 base diameter (mm) 16 whip diameter (mm) 4 casing abs connector sma(m) environmental temperature range - 40c to 85c humidity non - con densing 65c 95% rh * for low frequency antennas these parameters can only be estimated using rf formula calculation, simulation or rough field test comparisons with large benchmark antennas.
spe - 12 - 8 - 0 34/ c /pk page 4 of 6 3. antenna characteristics 3 .1 antenna setup anten na i s placed on metal ground 30x30c m 3 .2 swr (on metal ground plane 30x30c m)
spe - 12 - 8 - 0 34/ c /pk page 5 of 6 4. drawing housing abs steel+pe jacket abs black black black flexible whip cap name material finish qty 1 1 1 brass black outer body sma(m) 1 p/n 000111k0600xxa 001111k0000xxa 000711c0000xxa 000611b0000xxa
spe - 12 - 8 - 0 34/ c /pk page 6 of 6 5. packaging
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