RFI SW12 VHF 5/8 Wave Roof Mount Antenna, 3dB, 148-175MHz, 1340mm
$232.00 inc GST ($201.74 exc GST)
Discounts and Shipping calculated at checkout.
Quantity
Pickup available from the Mobile Systems Showroom: 1/14 Portside Drive, Mount Maunganui. We will notify you when your order is ready for collection.
Available to order. We'll confirm dispatch timing when you order.
RFI SW12 VHF ⅝ Wave Roof Mount Antenna, 3dB, 148-175MHz
A base-loaded ⅝ wave VHF whip, with 3dB of gain over a standard quarter wave. Whip only; fits the RFI MB9 roof base.
Overview
Working flat farmland, open roads or long direct calls between vehicles? A ⅝ wave flattens the signal towards the horizon, pushing it further across open country than a standard quarter wave whip.
It needs the centre of a metal roof to work at its best, and it's tall at 1340mm, so it suits vehicles without height limits. In steep hills and forestry, a unity gain whip such as the RFI SW2 is often the better choice.
Key Features
- 3dB over a quarter wave (⅝ wave design) means more reach on flat, open ground.
- 148-175MHz VHF high band means it suits business, farm and emergency service VHF radios.
- Tapered 17-7PH stainless whip on a fibreglass base-loading coil means a strong, flexible whip.
- Rated to 100W means plenty of headroom for VHF mobile radios.
Install Notes
- Mount on the centre of a metal roof. It needs a ground plane.
- Field tuned to minimum VSWR on install. Our technicians can tune it for you.
- At 1340mm, check clearance for carports, sheds and low branches.
Complete Your Antenna
- RFI MB9 VHF Antenna Base: base only, or with 5m RG58 cable.
Key Specifications
| Frequency | 148-175MHz |
| Gain | 3dB over a quarter wave |
| Type | Base-loaded ⅝ wave |
| Whip length | 1340mm |
| Ground plane | Required: centre of a metal roof |
| Mounting | RFI MB9, MB10 or MB12 base (not included) |
| Max power | 100W |
| Tuning | Field tuned to minimum VSWR |
FAQs
Should I choose the SW12 or a unity gain whip?
Choose the SW12 for flat, open country and long direct calls. In hills, valleys and forestry, or when talking through a repeater above you, a unity gain whip's wider pattern usually works better.
Do I need a licence?
VHF business radio operates under a licence. This antenna suits licensed VHF radios.
Can you install it for me?
Yes. Our Bay of Plenty technicians can fit and tune it. Outside the region, we work with partner installers.
RFI SW12 VHF 5/8 Wave Roof Mount Antenna, 3dB, 148-175MHz, 1340mm
$232.00 inc GST ($201.74 exc GST)