Gain vs. isotr. Rad. 12.20 dBi
Gain vs. Dipole      10.05 dBD
-3 dB E-plane         45.2 deg.
-3 dB H-plane         53.4 deg.
F/B                  -25.2 dB
F/R                  -20.9 dB
Impedance               50 ohms
VSWR Band Width     1.07:1 *
Mechan. Length        7957 mm incl. 2 x 60 mm offset
Electr. Length        1.31 λ

Stacking Dist. h-pol.
top-to-bottom         6.65 m
side-by-side          7.78 m

*) as in VE7BQH G/T table = at 50.30 MHz

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Geometry

Table 1: YBN 50-7mzc, 15 mm elements on a 30 x 30 mm boom:

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"Ready to saw and drill" data for elements on boom with BC acc. DG7YBN for Stauff Clamps:

Boom shape: square Boom: 30 x 30 mm Offset rear: 60 mm Offset front: 60 mm

Stauff Clamps 2-15-PP plus screws M6 x 65

Note: This includes a "Segmentation Density Correction" (SBC) of 0.09 mm

Table 1: YBN 50-7mzc, 15 mm elements on a 40 x 40 mm boom:

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"Ready to saw and drill" data for elements on boom with BC acc. DG7YBN for Stauff Clamps:

Boom shape: square Boom: 40 x 40 mm Offset rear: 60 mm Offset front: 60 mm

Stauff Clamps 2-15-PP plus screws M6 x 75

Note: This includes a "Segmentation Density Correction" (SBC) of 0.09 mm

The YBN 50 -7mzc Hairpin Match:

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The simulation has been done with 15 mm diameter wire.


This design has been viewed how often after the first built has been published in Apr. 2020?

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Pattern and VSWR Plots

Current distribution Elevation and Azimuth plot at 50.1 MHz

 

RL and SWR plot - simulated

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Stacking

2 x vertical stack

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73, Hartmut, DG7YBN