RHA68 directional antenna 68-78 MHz 3-element 7 dBi 50 Ω UHF-female
Sirio
Sirio SY 68-3 is a high-quality 3-element directional Yagi base station antenna designed for the 68–78 MHz VHF Low Band. It is an excellent choice for RHA68 village radio systems, public-safety communications, industrial sites and other VHF Low Band applications that require greater range and interference rejection than an omnidirectional antenna.
Its directional design concentrates transmit power in the desired direction, improving connection quality and reducing the effects of interference. The antenna can be installed for either vertical or horizontal polarisation according to the application. The factory-tuned design requires no separate adjustment within the 68–78 MHz frequency range.
Features
- Directional 3-element Yagi antenna
- Frequency range: 68–78 MHz
- Excellent choice for RHA68 village radio systems
- Gain: 7 dBi (4.85 dBd)
- Vertical or horizontal polarisation
- 50 ohm impedance
- UHF female (SO-239) connector
- Maximum transmit power: 350 W
- Durable aluminium construction for outdoor use
- Weather-resistant joints and DC-grounded design
- Mast mounting: Ø35–52 mm
Suitable applications include
- RHA68 village radio networks
- Village and regional communications
- Rescue and public-safety communications
- Industrial sites
- Ports
- Mines
- Agriculture and forestry
- Base stations for long-range VHF links
SKU :
SY68-3Category :
VHF and UHF antennas: TETRA, PMR and moreTechnical specifications
Property / Value
Model: Sirio SY 68-3
Part number: 2105101/68
Antenna type: directional 3-element Yagi
Applications: RHA68, VHF Low Band
Frequency range: 68–78 MHz
Gain: 7 dBi (4.85 dBd)
Polarisation: vertical or horizontal
Radiation pattern (H): 130° at 73 MHz
Radiation pattern (E): 70° at 73 MHz
Front-to-back ratio: ≥ 15 dB
SWR: ≤ 1.5
Impedance: 50 Ω
Feed system: Gamma Match
Maximum transmit power: 350 W (CW)
Connector: UHF female (SO-239), protective cap included
Grounding: all metal parts DC-grounded, centre conductor capacitively coupled
Mounting: mast Ø 35–52 mm
Boom diameter: 33 mm
Element diameter: 16 mm
Dimensions: 2235 × 1600 mm
Turning radius: 1875 mm
Wind surface area: 0.166 m²
Wind load: 203 N at 150 km/h
Operating temperature: −40 to +80 °C
Weight: 3.36 kg
Materials: aluminium, galvanised steel, chrome-plated brass, Zamak, EPDM rubber
Country of manufacture: Italy
Package contents
Sirio SY 68-3 RHA68 Yagi base station antenna
Mast mounting kit
Installation instructions
Sirio P/N 2105101/68
| General | |
|---|---|
| Brand | Sirio |
| Tekniset tiedot | |
| Supported Connectivity (Technology) | VHF, RHA68 |
| Antenna Features | Single-function antenna, SiSo, Directional |
| Mounting Location | Outdoor, Mast |
| Frequency | 66-78 |
| Connector 1 | UHF- |
| Polarity | Female |