VHF Dipole Stacked Arrays
Price on application
Hi-Tec Aerials VHF folded dipole stacked arrays combine two or four professional PRO-FDV folded dipoles with a power divider for an omnidirectional gain antenna that can be configured to suit the site. Built for harsh environments with minimal hardware.
- SA3: 2 dipoles and a PD2 divider, 3 dBd omni or 6 dBd offset
- SA6: 4 dipoles and a PD4 divider, 6 dBd omni or 9 dBd offset
- Low band PRO-FDVL (75–108 MHz) or high band PRO-FDVH (118–170 MHz)
- 750 W maximum power, RG213 feed, DC grounded
- Mounts to a 48 mm tube with cross clamps
- Downtilt available with delay lines. Enquire for pricing
Flexible gain from proven dipoles
The Hi-Tec Aerials VHF stacked arrays are designed to be used in different configurations with minimal hardware. They use our professional series VHF folded dipoles in a stacked configuration to provide added gain for base station and repeater sites.
Each folded dipole is mounted to a cast aluminium hub. The centre feed is taken out through the hub and an RG213 coax tail runs down the centre of the boom. The antenna is DC grounded for lightning protection.
The booms mount to a vertical 48 mm OD tube with a cross clamp. This lets the dipoles be spaced from the mounting tube for either an omnidirectional pattern or an offset pattern. The offset pattern provides a further 3 dB of gain in the offset direction, as shown in the radiation patterns. Downtilt can be provided by inserting delay lines in the feed system.
Four configurations
Choose the low band PRO-FDVL dipoles for 75–108 MHz (10 MHz bandwidth) or the high band PRO-FDVH dipoles for 118–170 MHz (30 MHz bandwidth), in a 3 dB or 6 dB array:
- SA3 (3 dB stacked array): 2 dipoles and 1 Hi-Tec power divider (PD2). 3 dBd omnidirectional or 6 dBd with offset.
- SA6 (6 dB stacked array): 4 dipoles and 1 power divider (PD4). 6 dBd omnidirectional or 9 dBd with offset.
Enquire for a quote
Stacked arrays are configured to suit each site, including band, offset, downtilt and harnessing. Contact us with your frequency and coverage requirements for a quote. We also offer installation and service and lightning protection. For UHF, see our UHF dipole stacked arrays.
Specifications
| Model | PRO-FDVL-SA3 | PRO-FDVL-SA6 | PRO-FDVH-SA3 | PRO-FDVH-SA6 |
| Number of dipoles | 2 | 4 | 2 | 4 |
| Power divider supplied | PD2 | PD4 | PD2 | PD4 |
| Frequency range | 75–108 MHz (see bandwidth) | 75–108 MHz (see bandwidth) | 118–170 MHz (see bandwidth) | 118–170 MHz (see bandwidth) |
| Bandwidth | 10 MHz | 10 MHz | 30 MHz | 30 MHz |
| Omnidirectional gain | 3 dBd | 6 dBd | 3 dBd | 6 dBd |
| Gain with offset | 6 dBd | 9 dBd | 6 dBd | 9 dBd |
| Half power beamwidth E plane | 27° | 13° | 27° | 13° |
| Return loss (VSWR) | <−14 dB (1.5:1) | <−14 dB (1.5:1) | <−14 dB (1.5:1) | <−14 dB (1.5:1) |
| Maximum power | 750 W | 750 W | 750 W | 750 W |
| Cable type | RG213 | RG213 | RG213 | RG213 |
| Boom length | 1.5 m | 1.5 m | 1.0 m | 1.0 m |
| Boom diameter | 48 mm | 48 mm | 38 mm | 38 mm |
| Projected area | 0.31 m² | 0.62 m² | 0.15 m² | 0.30 m² |
| Wind loading at 150 km/h | 340 N | 680 N | 165 N | 330 N |
| Weight | 9.2 kg | 18.4 kg | 4.2 kg | 8.4 kg |
Additional information
| Brand | Hi-Tec |
|---|---|
| Band | VHF |
| Models | PRO-FDVL-SA3 (2 dipoles, 3/6 dBd), PRO-FDVL-SA6 (4 dipoles, 6/9 dBd), PRO-FDVH-SA3 (2 dipoles, 3/6 dBd), PRO-FDVH-SA6 (4 dipoles, 6/9 dBd) |
| Frequency | 75–108 MHz (FDVL), 118–170 MHz (FDVH) |
| Pricing | Enquire for a quote |
