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Call 0345 2300 599The OptiBeam OB10-5 is a compact and highly efficient 10 element, 5 band mini Yagi covering the 20m, 17m, 15m, 12m, and 10m amateur bands.
Described by OptiBeam as “the most compact and efficient trap-less fiveband tubular element Yagi in the world”, the OB10-5 is designed for operators who want serious multi-band HF performance from a compact rotatable antenna system.
With a boom length of just 3.80m and a turning radius of 4.38m, the OB10-5 offers excellent performance for stations where space, wind loading, and installation size need to be kept under control. It uses a single 50 ohm coax feedline, making it a clean and practical solution for fixed-station HF operation.
Key Features
- Compact 10 element, 5 band mini Yagi
- Covers 20m, 17m, 15m, 12m, and 10m
- Trap-less tubular element design
- Single 50 ohm coax feedline
- Compact 3.80m boom length
- 4.38m turning radius
- High gain across all five supported bands
- Strong front-to-back performance
- Ideal for DXing, contesting, and fixed-station HF operation
- Efficient multi-band design for stations with limited antenna space
Band Coverage and Performance
| Band | Gain dBd | Gain dBi | F/B Ratio |
|---|---|---|---|
| 20m | 4.0dBd | 11.3dBi | 23dB |
| 17m | 4.2dBd | 11.8dBi | 12dB |
| 15m | 4.1dBd | 11.8dBi | 12dB |
| 12m | 4.5dBd | 12.2dBi | 14dB |
| 10m | 4.0dBd | 12.5dBi | 27dB |
VSWR
| Band | Frequency Points | VSWR |
| 20m | 14.00 / 14.19 / 14.35MHz | 1.5 / 1.2 / 1.5 |
| 17m | 18.07 / 18.13 / 18.17MHz | 1.3 / 1.1 / 1.3 |
| 15m | 21.00 / 21.25 / 21.45MHz | 1.5 / 1.2 / 1.4 |
| 12m | 24.89 / 24.94 / 24.99MHz | 1.3 / 1.2 / 1.3 |
| 10m | 28.00 / 28.50 / 29.00MHz | 1.3 / 1.2 / 1.4 |
Specifications
| Specification | Details |
| Brand | OptiBeam |
| Model | OB10-5 |
| Product type | 10 element 5 band mini Yagi |
| Supported bands | 20m / 17m / 15m / 12m / 10m |
| Elements | 10 |
| Active elements | 2 / 2 / 2 / 2.5 / 2.5 |
| Maximum element length | 7.94m |
| Boom length | 3.80m |
| Turning radius | 4.38m |
| Feedline | 1 x 50 ohm coax |
| Weight | 22.50kg |
| Wind loading projected area | 0.83 sq m / 8.88 sq ft |
| Wind load at 130km/h | 728.49N |
| Wind load area at 130km/h | 0.91 sq m / 9.79 sq ft |
Typical Uses
- Fixed-station HF operation
- Multi-band DXing
- HF contesting
- Compact beam installations
- Stations needing 20m to 10m coverage from one antenna
- Operators wanting a trap-less multi-band Yagi
- Installations where a larger full-size HF beam is not practical
Installation Notes
The OB10-5 is designed for fixed installation on a suitable mast or tower. Please ensure that your mast, rotator, mounting hardware, and support structure are suitable for the antenna’s weight, turning radius, element length, 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 OB10-5 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]