While I learned the required subject mator for my two degrees in university, the main thing I learned in university was how to research. It was a bit of a challenge to transition to the web but well worth it it.
At my last two jobs I was the unofficial "researcher."
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Glad to help.
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I'd seriously consider breadboarding a stock PA0RDT dead bug style, isolate the 'plate' with a dremal tool.
The J310 is easy to locate, the 2N5109 might be a challenge.
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Avoid active antenna designs with MOSFETs as the gate capacitance will kill the incoming RF.
This can be avoided but it gets way too complex for the performance of the antenna.
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This is another resource, I've built the antennas using 6CW4, I used 13CW4 because I had them.
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This design works extremely well...OK can't copy the link as it brings up the graphic.
Look for the design that uses 3 6CW4s.
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