The Times Microwave Systems LMR 75 Ohm Coaxial Cable range is recognised globally as the Industry Standard, Ultra Low Insertion Loss, Flexible, Low Cost, Lightweight DC-2.5 GHz solution for all 75 Ohm applications – backed up by the best warranty and technical support in the business.
75 Ohm LMR Coaxial cable is used in applications such as:
- Satellite Applications
- VSAT applications
- Video applications such as CCTV, CATV, baseband or broadband
- In-Building Feeder Runs
- Any 75 ohm Wireless Application requiring an easily routed cable
LMR 75 Ohm Coaxial Cable Range – In Depth
LMR 75 Ohm Coaxial cable is extremely popular due to its excellent reliability, unsurpassed flexibility and ultra low attenuation. The LMR cable has loss figures comparable to the extremely rigid corrugated coaxial cables however manages to achieve similar flexibility to that of high loss RG Cables. LMR 75 ohm coaxial cables are much lower attenuation than competing RG 75 ohm coaxial cables.
The unmatched electrical performance is achieved due to the cable construction specifications. The centre conductor uses a Bare Copper Covered AI Material which contains a generous amount of copper. The dielectric is nitrogen injected, foamed, closed cell, Polyethylene which helps towards achieving 83% and 86% Velocity of Propagation, depending on the chosen cable diameter.
The outer conductor is bonded directly onto the insulator and is wrapped 360 degreed round the dielectric, this therefore provides superior shielding effectiveness. Due to the foil providing such excellent shielding abilities, the LMR-75 ohm range is significantly lower loss than competing RG coaxial cables. RF shielding of LMR-400-75 is > 90 db as compared to 55 dB for RG11 single braid.
LMR-400-75 Vs RG11 Electrical Performance
In order to show the difference in electrical performance between 75 Ohm Coaxial Cables, we have compared LMR-400-75 and RG11 below.
| Performance Property | LMR-400-75 | RG11 |
| Maximum Operating Frequency | 2.5 GHz | 1 GHz |
| Velocity of Propagation | 85% | 66% |
| Shielding effectiveness | >90dB | >55dB |
| Attenuation (1000 MHz at 100m) | 12.8dB | 23.4dB |
Connectors for LMR 75 Ohm Coaxial Cable
The Times Microwave X Series, that are used to turn the 75 ohm coaxial cable into an assembly, have been engineered to offer the additional key advantages and features over our competitors’ products:
- Albaloy/Tri-Plate plating – resulting in superior Corrosion/Salt Fog resistance performance.
- No braid trim feature – saves time during termination
- Excellent broadband VSWR performance
- Centre pins plated with substantial 50 micro inches of gold- enhanced mate/de-mate life.
- IP 67 Waterproof rated when used with the Times WSB strain relief Weather Sealing Boots.
- Rugged Design with hex Coupling nut feature on Male connectors -enabling the use of torque tools to ensure proper mating force
- Compatible with Times assembly aid tooling such as CST and CT strip/crimp tools
- Solderless rapid assembly design
- Indelible Laser marked with the Times part number
- Superior pull strength /connector retention designs.
Connectors Availability
LMR 75 Ohm Coaxial cable, supplied here at McGill Microwave Systems, can be supplied with all popular connectors for 75 Ohm applications. Below is a list of ‘EZ’ style, solderless connectors:
| LMR-200-75 | LMR-240-75 | LMR-400-75 | LMR-600-75 | |
| N Male | EZ-200-NMH-75 | EZ-240-NMH-75-X | EZ-400-NMH-75-X | EZ-600-NM-75 |
| BNC Male | – | EZ-240-BM-75-X | – | – |
| F Male | EZ-200-FM-75-X | EZ-240-FM-75-X | EZ-400-FM-75-X | EZ-600-FM-75-X |
Below is a list of ‘TC’ style, solder connectors.
| LMR-200-75 | LMR-240-75 | LMR-400-75 | LMR-600-75 | |
| N Male | – | TC-240-NM-75 | TC-400-NM-75 | TC-600-NMH-75/50 |
| BNC Male | TC-200-BM-75-X | TC-240-BM-75-X | TC-400-BM-75-X | |
| F Male | – | TC-240-FMH-75 | – |
Weather Sealing, Strain Relief Boots
When our LMR 75 ohm Coaxial Cable assemblies, WSB weather sealing strain relief boots are installed. This ensures the assembly becomes IP67 Rated. This gives extra assurance by fully mitigating any risk of dust ingress and is fully Protected from immersion in water between 15 centimetres and 1 meter in depth.
The soft silicone boot weatherproofing kits replace older weatherproofing methods. The WSB™ weather seal strain relief boots are IP67 rated and are both RoHS and REACH Compliant.
The Weather sealing boots has ribs built in and snap on to our Times Microwave connectors, which also have ribs. This created an excellent, water tight, labyrinth seal effect, which gives excellent sealing abilities.
The WSB boots are compatible with All 75 ohm X series connectors.
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