Features of the Sirio Boomerang 27W Balcony antenna are:
- Balcon or temporary installation antenna
- Mono-band
- Omnidirectional
- Factory tuned at mid-band
- Tunable by whip length adjusting
- Fiberglass whip and radial with inside helical winding
Electrical Data
| Type | : | 1/4 ? boomerang | 
| Frequency range | : | 26,8-27,6 MHz | 
| Impedance | : | 50 O | 
| Radiation | : | 360° omnidirectional (H-plane) | 
| Polarization | : | linear vertical | 
| Gain | : | 0 dBd / 2.15 dBi | 
| Bandwidth | : | 800 KHz @ SWR = 2 | 
| SWR | : | = 1.2 @ res. freq. | 
| Max. power | : | 150 W PEP | 
| Connector | : | UHF-female | 
 	 
 Mechanical Data
| Materials | : | Aluminium, Fiberglass, Steel, Copper, Nylon | 
| Wind load | : | 39 N @ 140 km/h | 
| Wind resistance | : | 140 Km/h | 
| Wind surface | : | 0,031 m² | 
| Height | : | 1,33 m. approx. | 
| Radial length | : | 1,28 mm approx. | 
| Weight | : | 750 gr approx. | 
Dimensions and weight are including packaging
| Dimensions | : | L175 x B10 x H10 cm | 
| Weight | : | 2,50 kg |