Johnson also do those adapters, but I doubt you'll end up using them;

J621-ND - SMA Plug to SMB Jack (Johnson # 134-1012-011) : $29.70
J622-ND - SMA Plug to SMB Plug (Johnson # 134-1012-021) : $32.40
J623-ND - SMA Jack to SMB Jack (Johnson # 134-1012-031) : $29.70
J624-ND - SMA Jack to SMB Plug (Johnson # 134-1012-041) : $29.70

I thought about this for.... not very long at all.
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