The Sirio SD-Dipole is a full-size, 1/2λ horizontal dipole base antenna engineered in Italy for CB 27MHz and 10-metre amateur radio use. With 1000W continuous power handling (3000W short time CW), an exceptionally wide tunable frequency range of 26.5–30 MHz, and a standout bandwidth of ≥3.5 MHz at SWR ≤2, it's one of the broadest-bandwidth antennas in the Sirio range — ideal for operators who want to cover the full CB and 10m band without constant retuning. Delivering 0 dBd (2.15 dBi) gain with omnidirectional radiation, it measures 5582mm (18.31ft) and is designed for on-mast mounting. Constructed from aluminium, galvanised steel, and zamak for robust outdoor performance. Key Features 1000W continuous power handling (CW) 3000W short time power handling (CW) Exceptionally wide bandwidth: ≥3.5 MHz @ SWR ≤2 Tunable frequency range: 26.5–30 MHz Compatible with CB 27MHz & 10-metre amateur radio Gain: 0 dBd / 2.15 dBi Omnidirectional radiation pattern Linear horizontal polarisation 1/2λ dipole design On-mast mounting SO-239 (UHF-Female) connector Height: 5582mm / 18.31ft Durable materials: aluminium, galvanised steel & zamak Made in Italy by Sirio Technical Specifications Type: 1/2λ dipole base antenna Radiation: Omnidirectional Polarisation: Linear horizontal Frequency range: 26.5–30 MHz (tunable) Systems: CB 27MHz / 10m amateur (HAM) Gain: 0 dBd / 2.15 dBi Bandwidth: ≥3.5 MHz @ SWR ≤2 Max power: 3000W peak (CW short time) | 1000W continuous (CW) Connector: SO-239 (UHF-Female) Height: 5582mm / 18.31ft Mounting: On-mast Materials: Aluminium, galvanised steel, zamak Country of origin: Italy
