Of course, the IEC 1 69¨C8 specification costs money to buy.?
I was surprised in most drawings to see limited information about the male pin. ?Apparently the specification requires that any type be intermateable with others. ?
there more information is given about the potential for male pin size differences, as follows:
¡°See interface dimensions shown on next page. Applicable to Females only: oversize pin .055
inch (1.4 mm) max. dia.,.080 inch (2.03 mm) deep; insertion force 2 lbs. (8.9 N) max. with
.054 inch (1.37 mm) min. dia. pin; withdrawal force 2.00 oz (.556 N) min. with .052 inch
(1.32 mm) max. dia. pin.¡±
but still, this isn¡¯t the real standard. This is just one manufacturers presentation. It suggest pins anywhere from .052 inch to . 055 inch.I don¡¯t have the time or money to purchase the real standard.
Gordon kx4z?
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On Jan 23, 2025, at 02:29, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote:
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Formulae for coaxial cable from Pasternak:
Gordon kx4z?
On Jan 22, 2025, at 21:08, Smeden via groups.io <niels@...> wrote:
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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
