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TIMES MICROWAVE SYSTEMS
LMR
®
-240-75 Ohm
Flexible Low Loss Coaxial Cable
Mechanical Specications
Performance Property Units US (metric)
Bend Radius: installation in. (mm) 0.75 (19.1)
Bend Radius: repeated in. (mm) 2.5 (63.5)
Bending Moment ft-lb (N-m) 0.25 (0.34)
Weight lb/ft (kg/m) 0.034 (0.05)
Tensile Strength lb (kg) 80 (38.3)
Flat Plate Crush lb/in. (kg/mm) 20 (0.36)
Construction Specications
Description Material In. (mm)
Inner Conductor Solid BC 0.032 (0.82)
Dielectric Foam PE 0.150 (3.81)
Outer Conductor Aluminum Tape 0.155 (3.94)
Overall Braid Tinned Copper 0.178 (4.52)
Jacket (See Table) 0.240 (6.10)
Electrical Specications
Performance Property Units US (metric)
Max Operating Frequency GHz 2.5
Velocity of Propagation % 84
Dielectric Constant NA 1.42
Time Delay nS/ft (nS/m) 1.21 (3.97)
Impedance ohms 75
Capacitance pF/ft (pF/m) 16.1 (52.9)
Inductance uH/ft (uH/m) 0.091 (0.30)
Shielding Effectiveness dB >90
DC Resistance
Inner Conductor ohms/1000ft (/km) 10.1 (33.1)
Outer Conductor ohms/1000ft (/km) 3.89 (12.8)
Voltage Withstand Volts DC 1500
Jacket Spark Volts RMS 5000
Peak Power kW 5.6
Ideal for…
• Satellite Applications
• Video Applications-CCTV, CATV, baseband or broadband
• In-Building Feeder Runs
• Any 75 Ohm Wireless Application requiring an easily routed,
low loss RF cable
LMR-240-75
Attenuation
(db per 100 feet)
100.0
10.0
1.0
10 100 1,000 10,000
Attenuation vs. Frequency (typical)
Part Description
Stock
Part Number Application Jacket Color Code
LMR-240-75 Indoor/Outdoor PE Black 54150
LMR-240-75-DB Outdoor PE Black 54226
LMR-240-75-FR Indoor FRPE Black 54259
Environmental Specications
Performance Property
0
F
o
C
Installation Temperature Range -40/+185 -40/+85
Storage Temperature Range -94/+185 -70/+85
Operating Temperature Range -40/+185 -40/+85
Frequency (MHz)
Calculate Attenuation = (0.229100) • FMHz + (0.000330) • FMHz (interactive calculator available at http://www.timesmicrowave.com/
cable_calculators)
Attenuation: VSWR=1.0 ; Ambient = +25°C (77°F) Power: VSWR=1.0; Ambient = +40°C; Inner Conductor = 100°C
(212°F); Sea Level; dry air; atmospheric pressure; no solar loading
Frequency (MHz) 30 50 150 220 450 900 1500 1800 2000 2500
Attenuation dB/100 ft 1.3 1.6 2.9 3.5 5.0 7.2 9.4 10.3 10.9 12.3
Attenuation dB/100 m 4.1 5.4 9.4 11.4 16.4 23.5 30.7 33.8 35.8 40.3
Avg. Power kW 1.41 1.09 0.62 0.51 0.35 0.25 0.19 10.17 0.16 0.14
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TIMES MICROWAVE SYSTEMS
LMR-240-75
Accessories & Install Tools
Part
Type Number Stock Code Description
Ground Kit GK-S240TT GK-S240TT Standard Grounding Kit
Strip Tool CST-240A 3192-152 Prep tool for LMR-240 connectors
Replacement Blade Kit RB-CST 3192-086 Replacement blade kit for all CST strip toold
Deburr Tool DBT-U 3192-001 Removes center conductor rough edges
Crimp Tool CT-240/200/195/100 3190-667 Crimp tool for LMR-100, 195, 200 and 240 connectors
GK-S240TT
TC-240-FMH-75
3190-1483
TC-240-NM-75
3190-477
EZ-240-FMH-75
EZ-240-NM-75
3190-1614
Connectors
Inner Outer Finish*
Part Stock VSWR** Coupling Contact Contact Body Length Width Weight
Interface Description Number Code Freq. (GHz) Nut Attach Attach /Pin in (mm) in (mm) lb (g)
1. BNC Male Straight Plug TC-240-BM-75-X 3190-2939 <1.1:1 (2.0) Knurl Solder-on Crimp A/G 1.37 (34.8) 0.56 (14.2) 0.043 (19.5)
2. F Male Straight Plug EZ-240-FMH-75 3190-1613 <1.25:1 (2.0) Hex Spring Finger Crimp N/G 1.7 (43.4) 0.56 (14.2) 0.016 (7.3)
3.
F Male Straight Plug TC-240-FMH-75 3190-1483 <1.25:1 (2.5) Hex Solder-on Crimp N/G 1.7 (43.2) 0.56 (14.2) 0.016 (7.3)
4. N Male Straight Plug EZ-240-NM-75 3190-1614 <1.25:1 (2.0) Knurl Spring Finger Crimp N/G 1.5 (38.1) 0.83 (21.1) 0.086 (39.0)
5. N Male Straight Plug TC-240-NM-75 3190-477 <1.25:1 (2.5) Knurl Solder-on Crimp N/G 1.5 (38.1) 0.83 (21.1) 0.086 (39.0)
TC-240-BM-75-X
3190-2939
3
2
4
5
CST-240A
3192-152
CT-240/200/195/100
3190-667
DBT-U
3192-001
RB-CST
3192-086
1