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COAXIAL CABLE
CONDUIT CALCULATOR
CONVERSION TABLES (C/F M/F)
CONVERSION - OTHER UOM
COPPER WIRE PROPERTIES
FIBER OPTIC BASICS
FIBER OPTIC GLOSSARY
INSTALL CALCULATOR
NATIONAL ELECTRIC CODE
VOLTAGE LOSS FORMULAS

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COAXIAL CABLE CALCULATIONS

COAXIAL CABLE CAPACITANCE (pF/FT)
50 OHM SOLID POLYETHYLENE	30.8 (pF/FT)
75 OHM FOAM POLYETHYLENE	20.6 (pF/FT)
95 OHM SOLID POLYETHYLENE	16.3 (pF/FT)
50 OHM FOAM POLYETHYLENE	25.4 (pF/FT)
75 OHM FOAM POLYETHYLENE	16.8 (pF/FT)
95 OHM AIR SPACE POLYETHYLENE	13.4 (pF/FT)

COAXIAL CABLE VELOCITY OF PROPAGATION (PERCENT)
AIR	100%
FOAM FEDP TEFLON®	180%
POLYETHYLENE	67%
PVC	45%
FOAM POLYETHYLENE	78% - 80%
TFE TEFLON®	71%
SILICONE	58%

RATIO OF BRAID COVERAGE TO RF INTERFERENCE
PERCENTAGE COVERAGE	ISOLATION (DB DOWN)	PERCENT COVERAGE	ISOLATION
60	25-35	90	55-60
70	30-40	90	55-60
80	45-50	DBL. 90% SHIELD	65-70
85	50-55	TRIAXIAL 90% SHIELD	75-80