Easy to build/test on a 75 ohm barrel adaptor with some solid 22awg copper wire. 10cm on a side. Don't worry about the 'balun" at this frequency. The barrel adaptor does the job. Less noise than a vertical "spider" groundplane. Slightly higher pattern. Works ok. Slightly directional.
http://www.amateurradiosupplies.com/v/v ... chart3.jpg
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