Reliable 4-meter radio frequency coaxial extension cable for extending an antenna beyond the main equipment. It has a 50 Ohm impedance and high-quality SMA male connectors on both ends. A clamp for antenna mounting is included. The cable is prepared for extending the TinySA Ultra antenna but is compatible with any RF equipment using SMA connectors.
At its core is the SLL-240 coaxial cable, known for its low attenuation and high shielding quality. Thanks to its foamed dielectric and double shielding, the cable ensures minimal signal loss and reliably protects against external interference, even in complex radio environments.
Package Contents
- SLL-240 coaxial cable, 4 m — 1 pc.
- SMA male connectors on both ends (factory installed).
- Antenna mounting clamp — 1 pc.
Key Advantages
- Low signal loss: thanks to the foamed dielectric, the cable maintains signal quality over its entire 4 m length.
- Double shielding: shielding effectiveness over 90 dB — reliable protection against external electromagnetic interference.
- High-quality SMA male connectors: tight contacts that do not "pop out" during movement or vibration.
- Ready-made solution: includes an antenna mounting clamp — no need to search for additional components.
- Compatibility: prepared for the TinySA Ultra antenna, but works with any RF equipment with an SMA input.
- Temperature resistance: operates in the range of −40 to +85 °C — suitable for field conditions.
- High reliability: withstands peak power up to 5.6 kW and a jacket breakdown test voltage of 5000 V.
Areas of Application
- Extending the TinySA Ultra spectrum analyzer antenna beyond the main device.
- Connecting antennas to drone detectors and radio monitoring stations.
- Mounting an antenna on a mast, tree, or structure using a clamp.
- Connecting RF equipment with SMA connectors in stationary and mobile systems.
- Testing and laboratory measurements requiring high-quality, loss-free signal transmission.
Electrical Characteristics
| Parameter | Value |
| Cable type | SLL-240, low-loss coaxial |
| Construction | Foamed dielectric, double shielding |
| Length | 4 m |
| Characteristic impedance | 50 Ohm |
| Capacitance per unit length | 79.4 pF/m |
| Relative velocity | 84% |
| Velocity factor | 1.19 |
| Shielding effectiveness | >90 dB |
| Jacket breakdown test voltage | 5000 V (AC) |
| Peak power | 5.6 kW |
| Return loss | −18 dB (3–3000 MHz) |
| Connectors | SMA male on both ends |
Mechanical Characteristics
| Parameter | Value |
| Installation temperature | −25 °C — +70 °C |
| Storage temperature | −55 °C — +85 °C |
| Operating temperature | −40 °C — +85 °C |
| Minimum bending radius | 19.1 mm |
| Repeated bending radius | 63.5 mm |
Operating Warnings
- Observe the minimum bending radius (19.1 mm) — sharp bends degrade transmission characteristics and can damage the internal structure of the cable.
- Do not stretch the cable tightly between two points — leave a loop near each connector.
- Before powering on equipment, check the reliability of contact in SMA connectors.
- Avoid installation at temperatures below −25 °C — the cable becomes less flexible at low temperatures.
The 4m SLL-240 extension cable is a professional solution for those who need to position an antenna exactly where it will perform most effectively, without sacrificing signal quality. Compatible with TinySA Ultra and any RF equipment with SMA connectors.
For other products in this category, see the Antenna Cables section.
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