The "Vivaldi Antenna + 4m Cable" kit is a ready-made solution for extending the antenna of a signal detector or analyzer beyond the main equipment. It includes a broadband Vivaldi antenna with a range of 730 MHz — 6.5 GHz and a high-quality 4-meter coaxial RF cable with SMA connectors. This combination ensures stable operation across a wide frequency range and allows the antenna to be placed where its effectiveness is maximized.
The Vivaldi antenna has a directional radiation pattern and small side lobes, making it suitable not only for reception/transmission but also as a direction-finding antenna for determining the direction to a signal source. The kit includes a low-loss, double-shielded SLL-240 coaxial cable, which maintains signal quality even at its full length.
Kit Contents
- Vivaldi R101C broadband antenna — 1 pc.
- SLL-240 coaxial cable, 4m with SMA male connectors on both sides — 1 pc.
- Antenna mounting clamp — 1 pc.
Key Advantages
- Wide frequency range: 730 MHz — 6.5 GHz — covers main FPV control, video transmission, Wi-Fi, and Bluetooth bands.
- Directional pattern: can be used as a direction-finding antenna to determine the direction to a signal source.
- Ready-made extension solution: the kit already includes the cable and mounting hardware — no need to search for anything extra.
- Low-loss cable: SLL-240 with foamed dielectric and double shielding preserves the signal over the entire 4m length.
- Robust design: operates at temperatures from −45 to +80 °C and humidity up to 95%.
- Compatibility with analyzers: prepared for extending the antenna of TinySA Ultra and other devices with SMA input.
- Compactness: antenna size 23 × 22.5 cm, weight only 150 g — convenient to carry and mount.
Areas of Application
- Extending the spectrum analyzer antenna (TinySA Ultra, etc.) beyond the main equipment.
- Connecting to drone detectors and radio monitoring stations.
- Direction finding of signal sources due to the directional pattern.
- Receiving FPV drone, Wi-Fi, Bluetooth signals across a wide frequency range.
- Stationary mounting on a mast, tree, or structure using a clamp.
Vivaldi Antenna Specifications
| Parameter | Value |
| Model | Vivaldi R101C |
| Frequency Range | 730 MHz — 6.5 GHz |
| Polarization | Linear |
| Nominal Gain | 7 dBi (~5 dBi at 800 MHz, 7 dBi at 2.4 GHz, 9 dBi at 5.8 GHz) |
| Power | 5 W |
| Beamwidth (Horizontal, −3 dB) | ~60° |
| Beamwidth (Vertical, −3 dB) | ~40° |
| Connector Type | SMA-F |
| Size | 23 × 22.5 cm |
| Weight | 150 g |
| Temperature Range | −45 °C — +80 °C |
| Humidity | 0–95% (short-term up to 100% without direct water contact) |
| Wind Resistance | Up to 20 m/s (Beaufort 8) |
SLL-240 Cable Specifications (4m)
| Parameter | Value |
| Cable Type | Low-loss coaxial, foamed dielectric, double shielding |
| Length | 4 m |
| Characteristic Impedance | 50 Ohm |
| Nominal Capacitance | 79.4 pF/m |
| Relative Velocity | 84% |
| Velocity Factor | 1.19 |
| Shielding Effectiveness | >90 dB |
| Jacket Breakdown Voltage | 5000 V (AC) |
| Peak Power | 5.6 kW |
| Return Loss | −18 dB (3–3000 MHz) |
| Connectors | SMA male on both sides |
| Installation Temperature | −25 °C — +70 °C |
| Storage Temperature | −55 °C — +85 °C |
| Operating Temperature | −40 °C — +85 °C |
| Minimum Bend Radius | 19.1 mm |
| Repeated Bend Radius | 63.5 mm |
Operating Warnings
- Do not use the antenna in wind speeds exceeding 20 m/s (Beaufort 8).
- If submerged in water — dry the antenna and replace the connecting cable before further use.
- Observe the minimum cable bend radius (19.1 mm) — sharp bends degrade transmission characteristics.
- Before powering on the equipment, ensure reliable connection of SMA connectors.
The "Vivaldi Antenna + 4m Cable" kit is a convenient, ready-made solution for expanding the capabilities of your spectrum analyzer, drone detector, or other RF equipment. Extend the antenna to where it will operate most effectively — and get the most out of your device.
Other products in this category can be found in the Military Patch Antennas section.
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