DG7YBN / 50 MHz / YBN 50-9m
  Last Update Apr 06th 2019


Performance Data and Geometry
Pattern and VSWR
Download as File

YBN 50-9m Yagi   with Straight Dipole

EME + SSB modest bandwidth version ... strictly G/T breeding with a straight dipole

This Yagi is a twin to the GTV 2-9m designed for those who yield to avoid producing and trimming a bent dipole. With rearranged driver cell this Yagi's performance is only a fraction away from the GTV version by means of losing just a marginal bit on the backlobes: F/B and F/R are down by approximately 1.5 dB compared to the GTV 2-9m.

This medium length Yagi is balanced between gain and Antenna Temperature. Design date of issue: 2019.02.25

Current Profile

Performance Data

Gain vs. isotr. Rad.  14.0 dBi
Gain vs. Dipole       11.8 dBD
-3 dB E-plane         38.4 deg.
-3 dB H-plane         42.8 deg.
F/B                  -26.2 dB
F/R                  -24.5 dB
Impedance               50 ohms
VSWR Band Width     1.12:1 *
Mechan. Length       12907 mm
Electr. Length        2.16 λ

Stacking Dist. h-pol.
top-to-bottom         8.19 m
side-by-side          9.09 m

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


This design has been viewed how often after the first built has been published in Mar. 2019?

Flag Counter

Pattern and VSWR Plots

Current distribution Elevation and Azimuth plot at 50.1 MHz


RL and SWR plot - simulated


Stacking Dist.    DL6WU Formula
H-plane               8.19 m = 26.88 ft
E-plane               9.09 m = 29.82 ft

73, Hartmut, DG7YBN

Flag Counter