Our 1/2 Wave aerial range covers UHF and VHF frequencies, includes wideband aerials and Marine frequency aerials.
MINI 1/2 WAVE WIDEBAND AERIALS
The Mini 1/2 Wave Wideband Aerial is an extremely versatile ground independent antenna, covering the majority of the VHF or UHF band. With an industry standard PL259 base they can easily be field terminated, making them ideal for mobile vehicle installations and customers using channels across multiple bands.
Available in either nickel plated black or silver with a stainless steel tapered whip.
The overall height of the aerial base is 80mm with a maximum diameter of only 19mm and is constructed from nickel plated brass with a black fibreglass centre section to house the impedance matching circuit.
The aerial is simply mounted by screwing it onto our SOB Base (SO239 right angle RG58 base). The SOB Base has a thread diameter of 16mm and is easily mounted onto a stainless steel bracket (e.g. BRRA1/2-SOB).
The aerials come packaged in four different configurations:
- Aerial with PL259 Connector
- Aerial with PL259 Connector and SOB Base
- Aerial with PL259 Connector and SOB Base pre-terminated with 3m of RG58 Coaxial Cable
- Aerial with PL259 Connector and SOB Base pre-terminated with 5m of RG58 Coaxial Cable
Eg. M1/2WB-V3BK is an M1/2WB in VHF with a SOB Base pre-terminated with 3m of RG58 coaxial cable in Black.
Specifications
M1/2WB-V
M1/2WB-U
Frequency Range @ -14dB (MHz)
146 – 178
420 – 500
Input Impedance (Ohms)
50
Aerial base conductor
PL259
Maximum Power (Watts)
50
Overall height (mm)
740
260
MINI 1/2 WAVE VHF & UHF AERIALS
The Mini 1/2 Wave Aerials feature a very small profile making them ideally suited for mounting on modern vehicles.
Like the heavy duty models, the Mini 1/2 Wave is an end fed configuration which eliminates the need for a ground plane, so the aerial can be mounted in any position on a vehicle. It is also ideally suited for mounting on non-metallic surfaces.
The overall height of the aerial base is 80mm with a diameter of only 16mm and is constructed from nickel plated brass with a black fibreglass centre section to house the impedance matching circuit.
The aerial is easily mounted by its 12mm stud, or onto a stainless steel bracket (BRRA1/2). Each Mini 1/2 Wave is fitted with 3 metres or 5 metres of RG58 coaxial cable as standard. The radiating element is the standard 2.7 mm diameter stainless steel whip. The collinear element is formed from stainless steel wire with a black epoxy coating. This element is available as a separate item (SM1/2UCE).
If further tuning is required insert a reflected power meter in the feed line and tune the lower element for minimum reflected power. A tuning guide is include in the following section.
In some installations it may be advantageous to raise the mounting position of the aerial, to clear vehicle body panels and improve the radiation of the aerial. An extender (MEXT) is available which fits between the aerial base and mounting stud and will raise it by 220mm.
Each aerial is stamped to make identification of the model possible. This is located on the vertical top surface of the aerial body.
Connector Options:
This range of antennas can have the following connectors fitted directly to the base.
Replace the above model codes:
CModel–x
e.g. CM1/2E-B is an M1/2E on a BNC
x Denotes connector type required.
- B for BNC plug
- T for TNC plug
- N for N plug
- P for PL259 plug
Optional Extras
- Connector eg: Reverse TNC or SMA
- Longer Coax Tails in RG58 or RG58 Low Loss
- MEXT, 220mm extender
Model
Description
Image
M1/2ESB
VHF 138-150 MHz
M1/2E
VHF 138-174 MHz
M1/2U
UHF 420-500 MH
M1/2U-T
UHF 400-420 MH
M1/2UC
UHF 420-500 MHz 3dB gain Collinear
M1/2UC-T
UHF 400-420 MHz 3dB gain Collinear
MEXT
220mm extender
TUNING GUIDE FOR M1/2E, M1/2U AND TUNING DIMENSIONS FOR M1/2UC AERIALS
Tuning Dimensions for M1/2UC (mm)
| Frequency (MHz) | Top Element | Bottom Element |
| 400-420 | 490 | 365 |
| 420-440 | 460 | 340 |
| 450-470 | 430 | 270 |
| 470-500 | 400 | 250 |
1/2 WAVE HEAVY DUTY VHF AERIALS
Our Heavy Duty model 1/2 wave aerial is available in a range of frequencies for VHF and also available for customer designated frequencies.
The end fed voltage feed configuration eliminates the need for a ground plane, so the aerial may be mounted in any position on a vehicle. This gives improved performance compared with other aerials ineffectively located on vehicles. The impedance matching circuit is mounted inside the rugged nylon base which provides a very strong, reliable and efficient unit. The aerial base is easily mounted by its 12mm stud or onto our range of stainless steel brackets.
This range is ideally suited for mounting on non metallic surfaces, or for base station use, as it readily mounts to buildings or fascia mounts with a stainless steel bracket. As standard a 3 metre coaxial cable tail is provided with the aerial and this can be readily replaced in service. The radiator element is our standard stainless steel whip (W12 or W09). To achieve the required element length on A and FM bands an extender is fitted.
Each unit is identified on the top of the base moulding with the band or frequency of operation.
The A band model is available in two versions. The standard model (1/2A) has a 1/2 wave radiating element which is made up of two sections. The shortened (1/2AH) element length is only 1100mm long. This element is helically wound on a fibreglass section with an adjustable tuning tip.
Cable fitting instructions and a Tuning guide are included in the following section.
Model
Description
Image
1/2A
½ Wave A Band Aerial
80-88 MHz, 3 MHz bandwidth
1/2FM
½ Wave FM Band Aerial
88 – 108 MHz, 3 MHz bandwidth
1/2AN
½ Wave Aeronautical Band Aerial
108 – 138 MHz, 3 MHz bandwidth
1/2ES
½ Wave ES Band Aerial
138 – 144 MHz, 3 MHz bandwidth
1/2E
½ Wave E & Marine Band Aerial
150 – 160 MHz, 3 MHz bandwidth
1/2EE
½ Wave EE Band Aerial
160 – 174 MHz, 3 MHz bandwidth
HEAVY DUTY 1/2 WAVE CABLE FITTING INSTRUCTIONS
TUNING GUIDE FOR 1/2E AERIALS
MARINE BAND VHF 1/2 WAVE AERIALS
For VHF marine installations there are two models available.
The popular half wave marine whip (M1/2) features a rugged moulded white nylon base fitted with a 890mm stainless steel whip. This aerial mounts through a 12mm hole or can be fitted to our Stainless Steel Bracket (BRRA1/2). A longer mounting stud (40mm) is available on request.
The second model (MFGTLT) is also a half wave configuration, however it is fitted inside a tapered fibreglass radome. Mounting is by a fully adjustable plastic marine tilt base.
Both models have unity gain with an omnidirectional radiation pattern. As standard they are fitted with 5 metres of white coaxial cable.
Model
Description
Image
M1/2
½ Wave Marine Band Aerial – Stainless Steel
MFGTLT
½ Wave Marine Band Aerial – Fibre Glass with Tilt Mount
