RF & MicrowaveCable Assembliesin Israel
Junkosha MWX Series — DC to 145 GHz
Precision test-grade cable assemblies for RF, microwave, and mm-wave applications. Optimized for phase stability, low insertion loss, and reliable performance in VNA port extension and high-frequency test systems.
Your Cable Is Lying to Your VNA.
Every time you reposition a standard RF cable, your phase reference shifts — and your measurement shifts with it. Junkosha MWX Series cables hold phase under flexion, from DC to 250 GHz. Now available in Israel, with local support.
The Hidden Cost of the Wrong Cable
A phase-unstable cable doesn't fail loudly. It fails quietly — corrupting measurements you trust, adding calibration loops to every test session, and introducing variables that take days to isolate.
The Phantom Error
You run a calibration. Everything looks clean. An hour later you move the cable to reach another port — and your S-parameter trace shifts by 2°. You re-cal. It shifts again. The problem isn't your VNA. It's the cable.
The mmWave Wall
At 67 GHz and above, every millimeter of phase drift becomes a measurable error. Standard cables — even quality ones — weren't designed for this. At 110 GHz or 250 GHz, "good enough" doesn't exist.
The Procurement Dead End
You know exactly which cable you need. You find it on a European datasheet. Lead time: 14 weeks. No local support. No Hebrew documentation. No one to call when the connector type doesn't match your port configuration.
The MWX Series: Built for Accuracy, Available in Israel
Junkosha's MWX Series uses a PTFE fluoropolymer core engineered specifically to maintain electrical length when the cable is flexed, repositioned, or temperature-cycled. The result: measurements you can trust across an entire test session — without recalibration.
True Phase Stability Under Flexion
PTFE core construction eliminates the spring-back and phase drift of standard cables. Flex it, reposition it, route it through a dense rack — the electrical length stays constant. Your VNA traces stay clean.
DC to 250 GHz. One Series Family.
Nine series cover every application from basic microwave to mmWave 5G and sub-THz research. MWX0 reaches 250 GHz. MWX7 and MWX8 give you cost-effective 26.5 GHz performance. Choose by frequency, not by catalog number.
Armored When You Need It
The MWX161 adds SUS spiral tube and wire braid armor over the standard MWX1 construction — rated to 67 GHz, 7.9 mm OD, operating from −65 to +125 °C. Built for ATE racks, field equipment, and anywhere cables get abused.
Matched-Phase Pairs, No Guesswork
Differential measurements, phased-array radar, balanced antenna test — these require cable pairs with matched electrical delay. Junkosha supplies certified matched-phase pairs. You specify the tolerance. They deliver it.
Local. Fast. In Hebrew.
Koto Electronics holds authorized stock in Israel. No 14-week lead times. No language barrier. Pricing, availability, technical questions — all handled locally, in Hebrew or English.
How to Order — 3 Steps
Select your series by frequency
Browse MWX0 through MWX8 below. Each series page lists connectors, OD, insertion loss, and VSWR at rated frequency. If you're unsure, Koto's engineers will help you choose.
Specify connector, length, and options
Connectors: 3.5 mm / 2.92 mm / 2.4 mm / 1.85 mm / 0.5 mm. Standard lengths 600–1,500 mm. Matched-phase pairs available on request.
Get a local quote within 24 hours
Contact Koto Electronics. We respond within one business day with pricing, availability, and lead time — in Hebrew or English.
Frequently Asked Questions
How is the MWX Series different from standard cables?
Standard cables are designed for signal transmission, not measurement accuracy. MWX cables use a PTFE fluoropolymer core that maintains electrical length when flexed — directly reducing phase error in VNA measurements and coherent RF systems.
Which series should I choose for VNA port extension to 67 GHz?
MWX1 Series is the standard choice. If your setup involves mechanical stress, cable routing through tight spaces, or repeated repositioning, consider the MWX161 — the armored variant of MWX1, rated to 67 GHz with SUS braid protection.
Can I get matched-phase pairs for differential measurements?
Yes. Junkosha supplies matched-phase cable pairs with certified electrical delay matching. Contact Koto Electronics with your phase tolerance requirement and we'll specify the correct option.
What connectors are available?
3.5 mm, 2.92 mm (K), 2.4 mm, 1.85 mm (V), and 0.5 mm depending on series. Connector choice affects the maximum usable frequency — our team can advise on the right interface for your frequency range.
Are these cables available from stock in Israel?
Koto Electronics maintains authorized stock of the most common MWX configurations in Israel. For standard assemblies, lead times are significantly shorter than ordering direct from Japan or through European distributors.
Are the cables RoHS compliant?
Yes. All Junkosha MWX Series cable assemblies are RoHS compliant.
Stop Recalibrating. Start Measuring.
Every hour you spend chasing phase drift is an hour not spent on the work. The MWX Series holds its phase. Your measurements hold their accuracy. And Koto Electronics gets it to you in Israel — fast, local, in the language you work in.
Authorized Junkosha representative in Israel · Daikin Group · RoHS · Hebrew & English support
