DG7YBN / 40 MHz / YBN 40-7m
  Last Update Apr. 26th 2024


Performance Data and Geometry
Pattern and VSWR
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YBN 40-7m Yagi   with conventional straight Dipole

This a Low Noise, direct feed 50 ohms full size 7 ele. Yagi for the 8 m band.

Performance Data

Elements              12.7 mm
Gain vs. isotr. Rad.  12.28 dBi
Gain vs. Dipole       10.1 dBD
-3 dB E-plane         54.8 deg.
-3 dB H-plane         52.8 deg.
F/B                  -24.3 dB
F/R                  -21.8 dB
Impedance               50 ohms
VSWR Band Width     1.30:1 *
Mechan. Length        9722 mm plus offsets
Electr. Length        1.32 λ

Stacking Dist. h-pol.
top-to-bottom         x.xx m = xx.x ft
side-by-side          x.xx m = xx.x ft

*) at 41.00 MHz


Element and Driver diameter 12.7 mm.
Elements on boom, holders: Hydraulic Clamps like Stauff or similar.
Dipole on base plate, gap in dipole approx. 15 mm.

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Pattern and VSWR Plots

Elevation and Azimuth plot at 40.68 MHz


RL and SWR plot - simulated


None so far ...

STACKING info might follow ...

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