RX antenna - 2el end-fire beverage array antenna

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!Example for 3 band array * '''Examle by John ON4UN - Source ON4UN's Low Band DXing (buy this book!) - Table 7-37''' ** From table chose '''Stagger distance for 20m''' - 20m is MAXIMAL distance which works on '''160, 80 and 40m bands'''! ** Chose '''space distance 2 to 6m''' ** From table chose Null direction for unwanted signal ** From table: Stagger distance 20m means Element Spacing (degrees) - 45° on 160m, 90° on 80m and 180° on 40m band ** Null signal from 25°, than Phasing Angle will be 139°, 98° or 17° on each band ** Than Phasing Line is 180° - Phasing Angle. 180° is done by one transformer in Feeder Box ** Physical length depends on Coax cable Velocity Factor (VF). For example RG-58 is VF=0.66. ** So for needed 41° Phasing line it is 12.34m. ** Calc: 300 / frequency (MHz) -> * VF -> / 360 -> * 41 = Physical length (m) ** '''DO NOT FORGET to check diagonal length. For Stagger and Space distance (20 and 5m) it is 20.6m. There must be something more for connectors etc. There is some Length L line, which must be the same for both feeders and helps with better instalation. Than is you use L = 5m than coax cables from feeders to 2-way splitter will be: first 5m and second 5m + 12,34m = 17,34m. Total diagonal length is 5m + 17,34m = 22,34m, we need more than 20,6m.''' [https://remoteqth.com/img/ZAW-WIKI/2elendfire/table1_ex.png|noborder]
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