VHF Pro Folded Dipoles
Price range: $902.73 through $1,146.48 inc GST
The Hi-Tec Aerials PRO-FDV professional series VHF folded dipoles are broadband, unity-gain base antennas built for repeater and base station sites. Heavy-duty extruded aluminium with a cast centre clamp and stainless hardware, made in New Zealand.
- Two models: PRO-FDVL (75–108 MHz) and PRO-FDVH (118–170 MHz)
- 0 dBd (unity gain), vertically polarised, DC grounded
- Broadband: 10 MHz (FDVL) or 30 MHz (FDVH) bandwidth
- 500 W maximum power, return loss better than 1.5:1
- Supplied with an RG213 tail and N plug, no clamp
- Customisable: connector and mounting
Professional VHF folded dipoles for base and repeater sites
The Hi-Tec Aerials PRO-FDV series are broadband, unity-gain VHF folded dipoles for general-purpose base station and repeater sites. They are vertically polarised, and the radiation pattern can be shaped by the distance from the metallic support or reflector: mounted clear of the mast they are close to omnidirectional, while a closer offset gives more gain in one direction.
The dipoles are DC grounded for lightning protection and built from heavy-duty extruded aluminium tube. A rugged cast aluminium centre clamp attaches to the boom with three radial bolts, and all hardware is stainless steel. The whole antenna is silver anodised for long life in harsh New Zealand conditions.
There are two models. The PRO-FDVL covers the low VHF band from 75 to 108 MHz with a 10 MHz bandwidth, and the PRO-FDVH covers 118 to 170 MHz with a wide 30 MHz bandwidth, so one antenna can serve a whole band of channels.
Ordering
Choose the model and frequency band. The PRO-FDVL is available in 75–80 MHz and 88–108 MHz (FM broadcast), and the PRO-FDVH in 118–136, 138–144, 151–156, 156–162 and 162–170 MHz.
As standard each dipole comes with an RG213 coax tail and an N plug, with no clamp. The tail is part of the matching system, so the cable type and length are fixed. You can choose a different connector (N jack or right-angle N plug, see connectors) and add mounting hardware: mounting clamps or saddle clamps to suit the 48 mm (FDVL) or 38 mm (FDVH) boom, a universal clamp, or a cross clamp. Contact us for a quote on a custom configuration.
For a lighter, lower-cost option see our standard VHF folded dipole. To combine two or four dipoles into an array, use a coaxial power divider. We also offer installation and service and lightning protection.
Specifications
| Model | PRO-FDVL | PRO-FDVH |
| Frequency range | 75–108 MHz (see bandwidth) | 118–170 MHz (see bandwidth) |
| Bandwidth | 10 MHz | 30 MHz |
| Gain | 0 dBd | 0 dBd |
| Polarisation | Vertical | Vertical |
| Input impedance | 50 Ω | 50 Ω |
| Return loss (VSWR) | Better than −14 dB (1.5:1) | Better than −14 dB (1.5:1) |
| Maximum power | 500 W | 500 W |
| Cable type | RG213 | RG213 |
| Element length | 1.6 m | 0.9 m |
| Boom length | 1.5 m | 1.0 m |
| Boom diameter | 48 mm | 38 mm |
| Projected area | 0.155 m² | 0.075 m² |
| Wind loading at 150 km/h | 160 N | 80 N |
| Weight | 4.5 kg | 2 kg |
| Grounding | DC grounded | DC grounded |
| Material | Silver-anodised extruded aluminium, stainless hardware | Silver-anodised extruded aluminium, stainless hardware |
Additional information
| Weight | N/A |
|---|---|
| Brand | Hi-Tec |
| Band | VHF |
| Model | PRO-FDVL, PRO-FDVH |
| Frequency Band | 75–80 MHz, 88–108 MHz, 118–136 MHz, 138–144 MHz, 151–156 MHz, 156–162 MHz, 162–170 MHz |
| Customisable | Connector, mounting |
| Standard Build | RG213 tail, N plug, no clamp |
