rigaut: Rigaut JR crystal set model variation in connections

ID: 577350
This article refers to the model: BCM / JR enclosed model (Rigaut, J., London)

rigaut: Rigaut JR crystal set model variation in connections 
17.Jun.22 23:08
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Rigaut JR crystal sets, one has aerial, earth and headphone connections external and the other has internal connections. One model of crystal set but two variations.

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