The 2m halo is borrowed from SA0CAN who was kind to let me use it until I find something else / better. An option would be a "Big wheel" like the one from WIMO.
An interesting detail is the mounting used. It is a "Vindskenefäste". The original use is for a parabol up to 90cm but it works very well for shorter masts as well, as seen.
The Smith chart is measured with a miniVNA Tiny. As seen the VSWR, the green curve, is quite OK. There is about 10 meters of RG58 between the antenna and the connector giving roughly 2dB of loss that must be taken into account, but still.
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