Sirio Base Station VHF Antenna

• Type: 3 elements yagi antenna
• Frequency range @ SWR ≤1.5: 140-160 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 140° @ center freq.
• Radiation (E-plane): beamwidth @ -3 dB = 70° @ center freq.
• Front to back ratio: ≥ 16 dB
• Polarization: linear vertical
• Gain: 4.85 dBd, 7 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap

• Type: 3 elements yagi antenna
• Frequency range @ SWR ≤1.5: 155-175 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 130° @ center freq.
• Radiation (E-plane): beamwidth @ -3 dB = 70° @ center freq.
• Front to back ratio: ≥ 16 dB
• Polarization: linear vertical
• Gain: 4.85 dBd, 7 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap

• Type: 4 elements yagi antenna
• Frequency range @ SWR ≤2: 136-174 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 116°
• Radiation (E-plane): beamwidth @ -3 dB = 65°
• Front to back ratio: ≥ 10 dB
• Polarization: linear vertical or horizontal
• Gain: 5.35 dBd, 7.5 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap

• Type: 4 elements yagi antenna
• Frequency range @ SWR ≤1.5: 140-160 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 100° @ center freq.
• Radiation (E-plane): beamwidth @ -3 dB = 65° @ center freq.
• Front to back ratio: ≥ 16 dB
• Polarization: linear vertical
• Gain: 6.35 dBd, 8.5 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap

• Type: 4 elements yagi antenna
• Frequency range @ SWR ≤1.5: 155-175 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 100° @ center freq.
• Radiation (E-plane): beamwidth @ -3 dB = 65° @ center freq.
• Front to back ratio: ≥ 16 dB
• Polarization: linear vertical
• Gain: 6.35 dBd, 8.5 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap

• Type: 6 elements yagi antenna
• Frequency range @ SWR ≤1.5: 140-160 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 80° @ center freq.
• Radiation (E-plane): beamwidth @ -3 dB = 60° @ center freq.
• Front to back ratio: ≥ 16 dB
• Polarization: linear vertical
• Gain: 8.35 dBd, 10.5 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap

• Type: 6 elements yagi antenna
• Frequency range @ SWR ≤1.5: 155-170 MHz
• Impedance: 50Ω
• Radiation (H-plane): beamwidth @ -3 dB = 75° @ center freq.
• Radiation (E-plane): beamwidth @ -3 dB = 55° @ center freq.
• Front to back ratio: ≥ 16 dB
• Polarization: linear vertical
• Gain: 8.35 dBd, 10.5 dBi
• Max. Power (CW) @ 30°C: 200 Watts
• Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
• Connector: N-female with rubber protection cap