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Call 0345 2300 599The OptiBeam OB2-40 is a high-performance 2 element monoband Yagi designed for the 40m amateur band.
Built for operators who want improved directivity and performance on 7MHz, the OB2-40 provides useful gain, strong front-to-back performance, and low SWR after correct setup. With a 5.6m boom length, 14.9m maximum element length, and a 7.96m turning radius, it is a serious 40m antenna for fixed-station installations.
The antenna uses a single 50 ohm coax feedline, keeping installation straightforward while providing the benefits of a directional 40m monoband beam.
Key Features
- 2 element monoband Yagi for 40m
- Designed for the 7MHz amateur band
- 3.6dBd / 10.5dBi gain
- 15dB front-to-back ratio
- Single 50 ohm coax feedline
- 5.6m boom length
- 14.9m maximum element length
- 7.96m turning radius
- 35kg antenna weight
- Suitable for fixed mast or tower installations
- Ideal for 40m DXing and contesting
Band Performance
| Band | Gain dBd | Gain dBi | Front-to-Back Ratio |
|---|---|---|---|
| 40m | 3.6dBd | 10.5dBi | 15dB |
VSWR Performance
| Setting | Frequency Points | VSWR |
| Europe setting | 7.00 / 7.06 / 7.20MHz | 1.6 / 1.1 / 2.0 |
| USA setting | 7.15 / 7.21 / 7.30MHz | 1.6 / 1.1 / 1.8 |
Specifications
| Specification | Details |
| Brand | OptiBeam |
| Model | OB2-40 |
| Product type | 2 element 40m monoband Yagi |
| Antenna type | Directional antenna |
| Design | Yagi |
| Supported band | 40m |
| Number of elements | 2 |
| Feedline | 1 x 50 ohm coax |
| Maximum element length | 14.9m |
| Boom length | 5.6m |
| Turning radius | 7.96m |
| Wind load at 130km/h | 500N |
| Wind surface area | 0.62 sq m / 6.8 sq ft |
| Weight | 35kg |
Typical Uses
- 40m DXing
- 40m contesting
- Fixed-station HF operation
- Operators wanting directional performance on 7MHz
- Permanent mast or tower installations
- Stations requiring improved front-to-back performance on 40m
- High-performance single-band HF antenna installations
Installation Notes
The OB2-40 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, element length, and wind load.
As with any HF Yagi, final performance will depend on installation height, surrounding structures, feedline quality, grounding, and correct assembly.
Important Note
This listing is for the OptiBeam OB2-40 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]