Re: Careful with BNC-to-SO239 adapters
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Niels ,
good physics, . this is why i dont use BNC connectors.
73 David ac9xh
On Wednesday, January 22, 2025 at 09:08:33 PM EST, Smeden <niels@...> wrote:
The characteristic impedance of any coaxial transmission line is highly dependent on the "ratio" of the diameter of the shielding conductor to the diameter of the inner conductor.
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Since the outer part of a BNC connector has fixed dimensions, it is only possible to change the characteristic impedance by varying the thickness of the inner conductor.
Dielectric properties ( the relative dielectric constant & the relative permeability ) matter more for the Velocity factor than for the impedance.
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/ Niels - OZ9NS
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