TWCH-78-2

TROMPETER SPECIFICATION SHEET CABLE, RADIO FREQUENCY, TWIN CONDUCTOR, BALANCED LINE TWCH-78-2 (*) – CINCH MARK: TROMPETER ELECTRONICS TWINAX, TWCH-78-2 (*) CONNECTIVITY SOLUTIONS ASSIGNED VENDOR NUMBER REQUIREMENTS: 1. IMPEDENCE (OF PAIR) -------------------------------- 78  3 OHMS 2. OPERATING VOLTAGE -------------------------------- 1 KVRMS MAX/2 KVDC 3. BEND RADIUS -------------------------------------------- 1.25 INCH MIN 4. CAPACITANCE ------------------------------------------- COND TO COND -------------------COND TO SHIELD ----------------COND TO SHIELD TO COND---TWO COND TO SHIELD ---------5. CONDUCTOR LOOP RESISTANCE ---------------- 19.0 OHMS/M FT MAX 6. VELOCITY OF PROPAGATION ---------------------- 66% NOM 7. ATTENTUATION: FREQUENCY dB/100 FT NOM FREQUENCY 21.2 PF/FT 36.0 PF/FT 38.0 PF/FT 62.0 PF/FT dB/100 FT NOM APPR C.MONAHAN DATE 10/19/2016 1 MHz 0.70 40 MHz 4.50 3 MHz 1.10 50 MHz 5.10 4 MHz 1.40 100 MHz 7.50 5 MHz 1.55 200 MHz 10.50 7 MHz 1.80 500 MHz 16.00 10 MHz 2.20 700 MHz 18.60 20 MHz 3.10 1000 MHz 22.50 30 MHz 3.90 8. HEAT AGING ATTENUATION TEST: SUBJECT A 180 FOOT SAMPLE TO 80C IN AIR CIRCULATING OVEN FOR 72 HRS. REMOVE CABLE FROM THE OVEN AND LET STABILIZE TO ROOM TEMP (4 HRS MIN). THE ATTENTUATION AT 7 MHz SHALL NOT INCREASE MORE THAN .48 dB/100 FT FROM ITS UNAGED VALUE 9. WEIGHT ---------------------------------------------------- .0386 LB/ FT 10. INSULATION RESISTANCE (MIN) ------------------ 20 MEGOHMS/1000 FT 11. OPERATING TEMPERATURE RANGE ------------ -30 C TO +80 C DESCRIPTION CONSTRUCTIONAL DETAILS INNER CONDUCTORS TWO CONDUCTORS, EACH 7 STRANDS OF AWG SIZE 28 TINNED COPPER WIRE. NOM DIA .037 (AWG 20) DIELECTRICS TWO EACH POLYETHYLENE, ONE BLUE, ONE NATURAL. NOM DIA .076 DWN DKC TWO EACH POLYETHYLENE. NOM DIA .052 FILLERS SHIELD JACKET DWN DKC 12-11-97 CHK C. M 10-19-97 ENG C.M 10-19-97 APPR C.M 10-19-97 MATERIAL __________ SCALE -------- REV D CABLE CORE EO 56534 .154 NOM O.D., .160 MAX DIELECTRICS AND FILLERS TO HAVE A 2.92  .25 RIGHT-HAND OR LEFT-HAND LAY, 4 TWISTS PER FOOT. A NYLON THREAD WRAP SHALL BE APPLIED WITH SUFFICIENT COVERAGE TO MAINTAIN THE POSITION OF THE COMPONENTS SINGLE BRAID, (128 STRANDS 16X8) AWG SIZE 36 TINNED COPPER WIRE. 9.8 PICKS/IN, 32 BRAID ANGLE, 4.2 OHM/M FT D.C. RESISTANCE. SHIELD COVERAGE 93% NOM, MAX O.D. .195 BLUE (PER EIA-359-A, MUNSELL COLOR CHART, SYMBOL CENTROID) FLAME RETARDANT HALOGEN FREE POLYOLEFIN .242  .005 O.D. CODE IDENT DRAWING NO. REV 14949 TWCH-78-2 D DATE 1-2-97 SHEET