Weinschel VM

The Weinschel VM series comprises high-performance RF and microwave components engineered for precision signal measurement and attenuation across demanding test, R&D, and production environments. These devices deliver consistent performance through wide frequency ranges while minimizing insertion loss and maintaining excellent impedance matching. Built to MIL-DTL-3933 standards with aluminum alloy bodies, stainless steel connectors, and gold-plated beryllium copper contacts, the VM line ensures signal integrity and reliability in critical applications.

– Technical Specifications

Electrical Performance

• Nominal impedance: 50 Ω
• Frequency range: DC to 4.0 GHz, DC to 8.5 GHz, DC to 18.0 GHz, DC to 40 GHz, and up to 50 GHz or 65 GHz (model dependent)
• Attenuation accuracy: ±0.060 dB (single-step 100 dB measurement, VM-7 receiver)
• Standing wave ratio: Low across specified frequency range; example SWR of 1.20 (DC–4 GHz) typical
• Power coefficient: <0.0003 dB/dB/watt
• Temperature coefficient: 127 dB (narrowband mode)
• Resolution: 0.001 dB

Mechanical Repeatability

• Step attenuator repeatability: Better than 0.05 dB over 1,000,000 switchings

– Key Features

• Low insertion loss minimizes signal degradation
• Precision impedance matching across operating bands
• MIL-STD-348, MIL-PRF-39012, and IEEE-STD-287 connector compliance
• Stainless steel construction with gold-plated contacts
• Temperature-stable performance with minimal power-dependent drift

– Typical Applications

• Production and R&D signal attenuation measurement
• RF/microwave test system integration
• Receiver calibration and verification
• Pulse and continuous-wave power handling

– Compatibility & Integration

Connector options include Type N (MIL-STD-348), SMA, and 2.92 mm (SMK) interfaces for flexible integration into standard RF systems.