Shively Labs 6842 FM Antenna

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Shively 6842 FM Antenna

Summary

 Elliptically polarized

Broadband

Up to 7.5 kW rating per bay

Features

Features:

  • Broadband
  • Non-pressurized
  • Easy to install
  • Minimum maintenance
  • Economical shipment by small-package carrier

Technical Specification

Performance specifications:

Bandwidth: 87.5 – 108 MHz

VSWR: 1.3 : 1 or better.

93-103 MHz: 1.2 : 1 or better.

Azimuth pattern circularity: Horizontal component on pole.

Input connection: 1-bay: 7/8″ female EIA

2-bay: 1-5/8″ female EIA

3 – 8-bay: 3-1/8″ female EIA

Bay spacing: 98″ (249 cm)

Electrical specifications:

No. of Bays Gain Power Rating No. of Bays Gain Power Rating

Power dB kW Power dB kW

1 0.46 -3.369 7.5 5 2.518 4.01 37.5

2 0.994 -0.027 15 6 3.024 4.806 45

3 1.512 1.797 22.5 8 4.044 6.068 60*

4 2.016 3.044 30

* Higher-power arrays are available. Assumes 3-1/8″ power divider for 2 bays and above.

Contact factory for power divider requirements.

Notes:

1. Our gain figures are calculated by factoring the directivity to allow for losses in the radiating system. Due to this conservative approach, you are assured of radiating maximum ERP by using Shively’s published gain figures.

Gain is provided for one polarization and is equal in circularly polarized antennas for both horizontal and vertical components.

Gain is computed for 98 MHz and will vary across the band.

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