Flexible Cable Assemblies
for Measuring
Instruments
Four frequency options from 26.5 to 67 GHz with exceptional cable flexibility and low repulsion. Phase-stable under static bending — designed to reduce stress loads on the device under test.
Flexible. Phase-Stable. Measurement-Ready.
The 2 Series offers flexibility and low repulsion to reduce stress loads to the device under test objects, with excellent phase stability against bending in intensive use of microwave measurement. Three construction types — Standard (armored), Non-Armored (custom, ultra-slim), and Lightweight Armored (for fixed wiring) — let you match the cable to the environment.
- ✓Phase stability: static bending across all variants
- ✓Low repulsion reduces mechanical stress on DUT connectors
- ✓Four frequency options: 26.5, 40, 50, 67 GHz
- ✓Non-armored ultra-slim variants down to 2.5 mm OD
- ✓Lightweight armored type for fixed-wiring applications
- ✓Operating temperature: -30 to +85 C on all variants
- ✓Matched-phase option available for multi-cable setups
- ✓Ships in 11 business days — RoHS compliant
Standard / Armored Type (8 layers)
Lightweight Armored Type — Fixed Wiring (7 layers)
Cable Photography
4 Frequency Options
Select by frequency range and construction type. All variants share 50 Ohm impedance, -30 to +85 C operating temperature, and RoHS compliance.
Most flexible — 6.0 mm OD, widest connector choice
40 GHz — ultra-slim 4.1 mm non-armored option
50 GHz — 3.7 mm non-armored for tight routing
67 GHz — 2.5 mm non-armored, lightest at 17 g/m
Technical Comparison
Specifications shown for Standard (armored) type. Non-armored variants have smaller OD, lower mass, and 6 mm bend radius. All values are typical at 25 C and sea level.
| Model | Max Freq. | OD (std) | Mass (std) | VSWR | Ins. Loss | Prop. Delay | Vel. of Prop. | Temp. Range |
|---|---|---|---|---|---|---|---|---|
| MWX221 | 26.5 GHz | 6.0 mm | 64 g/m | 1.33 | 1.4 dB/m | 4.40 ns/m | 78% | -30 to +85 C |
| MWX241 | 40.0 GHz | 9.5 mm | 137 g/m | 1.43 | 3.0 dB/m | 4.35 ns/m | 77% | -30 to +85 C |
| MWX251 | 50.0 GHz | 9.5 mm | 129 g/m | 1.43 | 3.8 dB/m | 4.36 ns/m | 77% | -30 to +85 C |
| MWX261 | 67.0 GHz | 7.7 mm | 90 g/m | 1.43 | 5.8 dB/m | 4.38 ns/m | 76% | -30 to +85 C |
* All specifications are typical measured values for reference. Non-armored type OD: MWX241 4.1 mm / MWX251 3.7 mm / MWX261 2.5 mm.
Simple Criteria for Cable Selection
All 2 Series cables share the same fluoropolymer core and 50 Ohm impedance. Choose frequency and OD based on your measurement priority.
Lower Insertion Loss
Choose a larger outer diameter cable
Higher Frequency
Choose a smaller outer diameter cable
Higher Power Rating
Choose a larger outer diameter cable
Better Flexibility
Choose a smaller outer diameter cable
The EMF Series Family
The full EMF product family covers RF and microwave cable assemblies for every test and measurement application.
Ready to order or need technical advice?
Koto Electronics is the authorized Israeli representative of Junkosha Inc. Contact us for pricing, availability, and custom specifications.