Wide Temperature &
High Durability
Cable Assemblies
Three cable types for demanding measurement environments. Heat-resistant operation from -65 to +125 C, or 50,000-cycle mechanical durability — up to 67 GHz with armored construction.
Built for Harsh Environments
The 1 Series offers two specializations within the 26.5 GHz band and one 67 GHz armored variant. MWX121 is the heat-resistant type, rated for the full -65 to +125 C range required in thermal cycling and aerospace test environments. MWX122 applies Junkosha's robot-cable cabling structure for massively extended mechanical life — validated through 50,000 composite bend-rub-twist cycles. MWX161 extends frequency to 67 GHz in a slim armored body, with both bending and temperature phase stability.
- ✓MWX121: heat-resistant, -65 to +125 C continuous operation
- ✓MWX122: 50,000-cycle composite durability — bend, rub, twist
- ✓MWX161: 67 GHz with SUS armored body, 7.9 mm max OD
- ✓Phase stability under static bending on all three types
- ✓Small connector neck diameter ideal for multi-port VNA
- ✓Torque Canceller connectors available on MWX122
- ✓Ships in 11 business days — RoHS compliant
MWX121 Construction (6 layers)
MWX161 Construction (8 layers, armored)
Cable Photography
3 Cable Types
Choose by temperature requirement, mechanical durability, or frequency range. All types share 50 Ohm impedance and 30 mm minimum bend radius.
Widest temperature range: -65 to +125 C
50,000-cycle composite durability — bend, rub, twist
67 GHz with armored body — slim 7.9 mm max OD
Technical Comparison
All specifications are typical values at 25 C and sea level. RoHS compliant. Characteristic impedance 50 Ohm on all types.
| Model | Max Freq. | OD | Mass | VSWR | Ins. Loss | Prop. Delay | Vel. of Prop. | Temp. Range | Length Range |
|---|---|---|---|---|---|---|---|---|---|
| MWX121 | 26.5 GHz | 6.6 mm | 80 g/m | 1.33 | 1.3 dB/m | 4.28 ns/m | 78% | -65 to +125 C | 200 - 5,000 mm |
| MWX122 | 26.5 GHz | 6.5 mm | 79 g/m | 1.33 | 1.9 dB/m | 4.39 ns/m | 76% | -30 to +85 C | 300 - 3,000 mm |
| MWX161 | 67.0 GHz | 6.5 mm (7.9 mm armored) | 79 g/m | 1.43 | 7.3 dB/m | 4.35 ns/m | 77% | -65 to +125 C | 600 - 1,500 mm |
* All specifications are typical measured values for reference. Assembly length tolerance: +/- 10 mm for lengths up to 1,000 mm.
How to Choose
All 1 Series cables share the same fluoropolymer core and 50 Ohm impedance — the differentiators are temperature range, mechanical durability, and frequency ceiling.
Lower Insertion Loss
Choose a larger outer diameter cable
Higher Frequency
Choose a smaller outer diameter cable
Widest Temp. Range
Choose MWX121 (-65 to +125 C)
Max Durability
Choose MWX122 — 50,000 cycle composite test
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.