Saturday 29 May 2021

Yagi vs. Vertical

Doing the research so you don't have to!

An interesting period of FT8-based RX-only comparisons between my 3-ele monoband LFA at home, 19km inland in the direction of South America, to which the antenna was pointed, and a 1/4 wave vertical at the beach.  Made possible by the very useful 'ALL' file record within WSJT-X and JTDX of all activity.  Both used the same ZLP interface and latest edition of WSJT-X.


 

Results for this band are not the same as lower down the HF bands, due to the Es propagation mode that is dominant.  As you can see, the results are very interesting, with wide variations in the signal levels, and in relative performance.  EA8BFK is included as it is on the beaming path, and a nice, shorter-skip comparison:

EA8BFK receptions, 24MHz FT8.

 

PU5LTI receptions, 24MHz FT8.

PY4EV receptions, 24MHz FT8.


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