"directly connected" are the words that are a red flag for me.
The coax should connect to the OWL through a balun, and the
balun would have the 2:1 transformation built in. Perhaps the
balun got lost somewhere along the chain of custody.
Rick N6RK
On 11/28/2020 12:37 PM, Doug Ronald wrote:
I have a question for the group (maybe not the right group): My log periodic
dipole array antenna has the coaxial transmission line terminus with a Z0 of
about 64 Ohms (measured with a VNA, and calculated from basic dimensions)
directly connected to an open wire transmission line with a calculated Z0 of
about 123 Ohms. This happens at the very high frequency end of the antenna,
Doug, W6DSR
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