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Call 0345 2300 599The OptiBeam OB1-4030 is a high-performance dual-band rotatable dipole covering the 40m and 30m amateur bands.
Designed for operators who want serious performance on two important low HF bands without installing separate antennas, the OB1-4030 combines excellent electrical efficiency with OptiBeam’s well-known mechanical quality. It is built as a 1 element rotary dipole and provides reliable coverage for both 40m and 30m from a single antenna system.
OptiBeam antennas are designed to offer high efficiency, optimum band coverage, consistent gain, stable radiation patterns, and low SWR. The OB1-4030 includes a high-power balun with a UHF female / SO-239 connection for standard 50 ohm coaxial cable.
Key Features
- Dual-band rotatable dipole for 40m and 30m
- Covers two popular low HF amateur bands
- 1 element rotary dipole design
- High-efficiency OptiBeam antenna technology
- Designed for low SWR and strong band coverage
- Stable electrical performance in varying weather conditions
- High-power 5kW rating
- High-power balun included
- UHF female / SO-239 feed connection
- Aluminium tubing element construction
- Robust mechanical design for long-term fixed installation
- Stainless steel hardware and high-quality materials throughout
OptiBeam Mechanical Quality
OptiBeam antennas are known for their strong mechanical design. The OB1-4030 uses carefully shaped element holders, robust tubing, and solid element transitions to provide excellent stability across the whole antenna system.
The elements are designed to remain properly aligned and secured against torsion, with minimal sag and a clean finished appearance. This makes the OB1-4030 a strong choice for operators who want a serious long-term installation rather than a compromise antenna.
Specifications
| Specification | Details |
|---|---|
| Brand | OptiBeam |
| Model | OB1-4030 |
| Product type | Dual-band HF rotatable dipole |
| Antenna type | 1 element rotary dipole |
| Band coverage | 40m and 30m |
| Element material | Aluminium tubing |
| Power rating | 5,000W |
| Longest element | 14.70m / 48.23ft |
| Turning radius | 7.35m / 24.11ft |
| Wind surface area | 0.45 sq m / 4.9 sq ft |
| Wind load | 363N at 130km/h |
| Feedpoint impedance | 50 ohms |
| Feedline connection | UHF female / SO-239 |
| Weight | 14kg / 30.86lb |
| Quantity | Sold individually |
Typical Uses
- Fixed station HF operation
- 40m and 30m DXing
- Low-band contesting
- Operators wanting a rotatable dipole for 40m and 30m
- Stations where separate 40m and 30m antennas are not practical
- Permanent mast or tower installations
- High-power HF station setups
Installation Notes
The OB1-4030 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 size, weight, turning radius, and wind load.
As with any HF antenna, final performance will depend on installation height, surrounding structures, feedline quality, grounding, and correct adjustment.
Important Note
This listing is for the OptiBeam OB1-4030 antenna only. Mast, rotator, coaxial cable, mounting hardware, and other station accessories are not included unless stated otherwise.
Please check that your installation site, support system, and rotator 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]