It is a design according to Gunter, DL9HCG.
Construction details can be downloaded here: https://dl9hcg.a36.de/
Logper antennas are also called LPDAs (Log Periodic Dipole Antenna).
The advantage of a logper (logaritmic periodic) antenna is its large bandwidth combined with relative small dimensions.
I selected a 7-elements logper with following dimensions:
One starts with the construction of a dual boom
7 element logper
Measured SWRs:
430 MHz 1 : 1.4
145 MHz 1 : 1.6
First QSOs with the repeater in Goes 145.775 MHz and 438.400 MHz PI1ZLD are promising.
http://www.pi3goe.nl
Logper pointing in the direction of the Zierikzee repeater
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