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Call 0345 2300 599The OptiBeam OB12-6 is a premium 12 element multiband HF Yagi designed for operators who want high-gain coverage across the 40m, 20m, 17m, 15m, 12m, and 10m amateur bands.
Covering six popular HF bands from a single antenna system, the OB12-6 offers strong gain, excellent front-to-back performance, and robust mechanical construction for serious fixed-station installations. With a 6.10m boom length and 7.95m turning radius, it provides an impressive balance of multi-band performance and manageable installation size.
The antenna uses a single 50 ohm feedline, helping to simplify installation while still offering wide multi-band coverage. For operators seeking a high-performance HF beam for DXing, contesting, and general fixed-station use, the OB12-6 is a serious choice.
Key Features
- 12 element multiband HF Yagi
- Covers 40m, 20m, 17m, 15m, 12m, and 10m
- Designed for the 7, 14, 18, 21, 24, and 28MHz amateur bands
- Strong gain across all supported bands
- Excellent front-to-back performance
- Single 50 ohm coax feedline
- Balun included
- Horizontal polarisation
- 6.10m boom length
- 7.95m turning radius
- Suitable for serious DXing and contesting
- Robust mechanical design for fixed mast or tower installations
Band Performance
| Band | Gain dBd | Gain dBi | Front-to-Back Ratio |
|---|---|---|---|
| 40m | 3.5dBd | 10.3dBi | 15dB |
| 20m | 4.2dBd | 11.6dBi | 13dB |
| 17m | 4.3dBd | 11.9dBi | 14dB |
| 15m | 4.6dBd | 12.3dBi | 16dB |
| 12m | 5.0dBd | 12.7dBi | 18dB |
| 10m | 5.7dBd | 13.5dBi | 26dB |
VSWR Performance
The OB12-6 offers efficient power transfer across its supported bands, with low SWR after correct installation and adjustment.
On 40m, the antenna can be adjusted for the desired part of the band, including CW / Europe and USA phone settings. Across the remaining supported bands, the SWR typically remains between 1.1:1 and 1.7:1, depending on frequency, installation, and final adjustment.
Specifications
| Specification | Details |
| Brand | OptiBeam |
| Model | OB12-6 |
| Product type | 12 element 6 band HF Yagi |
| Antenna type | Directional antenna |
| Design | Yagi |
| Supported bands | 40m / 20m / 17m / 15m / 12m / 10m |
| Number of elements | 12 |
| Active elements | 2 / 2 / 2 / 2.5 / 3 / 3 |
| Number of connectors | 1 |
| Feedpoint impedance | 50 ohms |
| Connector | SO-239 |
| Balun included | Yes |
| Polarisation | Horizontal |
| Maximum element length | 14.68m |
| Boom length | 6.10m / 610cm |
| Turning radius | 7.95m |
| Wind surface area | 1.88 sq m / 20.3 sq ft |
| Wind load | 1,504N |
| Weight | 65kg |
| Antenna mount | Centre mount |
Typical Uses
- Fixed-station HF operation
- Multi-band DXing
- HF contesting
- High-performance 40m to 10m coverage
- Stations wanting six-band beam coverage from one antenna
- Permanent mast or tower installations
- Operators wanting a serious multiband directional antenna
Installation Notes
The OB12-6 is designed for fixed installation on a suitable mast or tower. Please ensure that your mast, tower, rotator, mounting hardware, and support structure are suitable for the antenna’s size, weight, turning radius, and wind load.
As with any HF beam, final performance will depend on installation height, surrounding structures, feedline quality, grounding, and correct assembly.
Important Note
This listing is for the OptiBeam OB12-6 antenna only. Mast, rotator, coaxial cable, mounting hardware, and other station accessories are not included unless stated otherwise.
Please check that your installation site, rotator, and support structure are suitable before ordering.
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]