This page contains the design data for the North America / Africa Phased Bi-Directional beverages. This beverage works well on 160,80, and 40. The project was designed using EZNEC 5.0 . EZNEC will not allow the modeling of the center tapped transformer in the BiDir feedpoint. The feedpoint was moved to the far end for this TOWARD modeling. The plots and design data, for the TOWARD direction, are provided below

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The North America / Africa Bi-Directional phased beverages are 220M long. The beverages are spaced at 5 meters with a 20 meter stagger.

EZNEC model

The NA / AF phased beverage antenna for the TOWARD Direction. The beverage stagger was chosen to allow operation on the 40 meter band.


Click on image, to view the EZNEC TOWARD node mappings. The TL1 and TL4 transmission lines are zero length and create V1 and V5 for Transformers XFM1 and XFM2 connection points

This is the NA / AF wire model for EZNEC TOWARD . The beverages are Bi Directional which complicates the feed system.

The NA / AF phased beverages TOWARD Sources and Loads screens. The 400 ohm Load consist of 100 ohms ground R and 300 Ohms fpr the Antenna Z.

The NA / AF phased beverages TOWARD Transmission lines and Transformers. The 180 degree cross-fire delay is shown on trabsformer 1. See the EZNEC node mappings drawing in the row above.

The NA / AF 220M phased beverage 1.825 Mhz 2D TOWARD Elevation plot. This antenna has an RDF of 12.2

The NA / AF 220M phased beverage 1.825 Mhz 2D TOWARD Azinuth plot.

The NA / AF 220M phased beverage 2D TOWARD Elevation plot for 3.790 Mhz.

The NA / AF 220M phased beverage 2D TOWARD Azinuth plot for 3.790 Mhz. This antenna has 14.4 RDF.

The NA / AF 220M phased beverage 2D TOWARD Elevation plot for 7.050 Mhz

The NA / AF 220M phased beverage 2D TOWARD Azinuth plot for 7.050 Mhz.

The NA / AF 220M phased beverage 1.825 Mhz 3D TOWARD plot.

The SWR sweep for the 220M NA / AF TOWARD beverage

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