Sennheiser GZL RG 58 - 0.25m Coaxial Cable with BNC Connector
Sennheiser GZL RG 58 - 0.25m Coaxial Cable with BNC Connector is backordered and will ship as soon as it is back in stock.
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Sennheiser GZL RG 58 - 0.25m Coaxial Cable with BNC Connector
Sennheiser GZL RG 58 - 0.25m Coaxial Cable
The Sennheiser GZL RG 58 - 0.25m (Article Number: 700158) is a professional-grade, 50-Ohm radio frequency (RF) coaxial antenna cable assembly. Measuring exactly 25 centimeters (9.84 inches) in length, this ultra-short interconnect is engineered specifically for stacking hardware modules directly on top of each other. It is the primary jumping cable used to hook up high-density wireless systems, such as bridging channels on a Sennheiser EW-D ASA antenna splitter or linking stacked evolution wireless receivers within a tight rack environment.
Key RF Signal Architecture
True 50-Ohm Impedance Match: Professional wireless audio networks rely entirely on a uniform 50-Ohm impedance architecture. This ultra-short 0.25-meter cable guarantees a solid 50-Ohm profile from end to end, eliminating localized standing wave reflections and phase mismatches that corrupt signal paths and trigger dropouts.
Absolute Minimum Lead Length: Spanning just 25 cm, this cable is designed to provide the cleanest possible layout behind equipment frames. Keeping the RF line short eliminates internal loops, preventing the cable from acting as an accidental induction antenna for power supplies or nearby digital processors.
Ultra-Low Resistance BNC Connections: Both ends of the cable terminate in heavy-duty, male-to-male BNC connectors. These utilize a standardized twist-and-lock coupling mechanism to safeguard your equipment hooks against mechanical vibration, accidental tugs, or moving rack frames.
Technical Specifications Matrix
| Feature Parameter | Performance Specification Value |
| Cable Assembly Model | GZL RG 58 - 0.25m |
| Official Article Number | 700158 |
| Total Physical Length | 0.25 meters (9.84 inches) |
| Nominal System Impedance | 50 Ohms |
| Input and Output Connectors | BNC Male to BNC Male |
| Cable Outer Diameter | 6.15 mm |
| Maximum Operating Frequency | 1000 MHz (Optimized for UHF blocks) |
| Cable Capacitance Metric | 101 pF/m |
| Conductor DCR Rating | 3.54 Ohms / 100 meters |
| Operational Temperature Range | -40 to 85 degrees Celsius |
| Outer Shielding Jacket Color | Low-reflection Matte Black |
RF Signal Loss and Attenuation Metrics
Coaxial lines experience a microscopic amount of signal attenuation over distance. Because this patching segment is kept down to an ultra-tight 0.25 meters, line loss is completely negligible. At a standard 20 degrees Celsius environment, the attenuation curves for this specific 0.25-meter run parse as follows:
| Operating Frequency Channel | Expected Signal Loss over 0.25 Meters |
| 400 MHz (Lower UHF Segment) | Approx. 0.08 dB loss |
| 800 MHz (Upper UHF Segment) | Approx. 0.14 dB loss |
| 1000 MHz (Maximum Rating Threshold) | Approx. 0.16 dB loss |
System Implementation Guidelines
Keep Connections Clean: Because BNC connections operate at very high frequencies, microscopic bits of dust, oil from skin contact, or corrosion inside the barrel can mimic a major signal drop. Keep the internal pin contacts clean. If a rack link has been sitting unused or exposed to outdoor festival dust, blow it clear with compressed air before locking it down.
Protect the Bend Radius: Never pinch, kink, or force this cable into a tight, sharp 90-degree bend to clear a shallow rack lid. Bending the wire too sharply forces the center copper strand out of position relative to the outer foil shield. This localized physical change instantly skews the uniform 50-Ohm impedance shape, creating an RF bottleneck that bounces signal backward and reduces overall reception quality. Use smooth, looping layouts behind your gear.
