The GR 1606 a or B impedance bridges ... click to enlarge.
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The GR 1606 a or B impedance bridges ... click to enlarge.
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The 874 series variable
capacitors |
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Various General Radio
874-series adjustable and constant-impedance lines... Click to enlarge. |
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The GR 1602b or similar
admittance meters ... click to enlarge. |
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874 series adjustable stubs ... click to enlarge. |