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The GRA-AT330T is a motorised HF screwdriver antenna designed for operators who want accurate, hands-on antenna tuning across a wide frequency range. Covering 3.5MHz to 50MHz when used with suitable whip configurations, it offers flexible multi-band operation from 80m through to 6m.
Unlike radio-dependent tuning systems, the GRA-AT330T gives the operator direct control over the antenna coil position. The supplied controller allows precise adjustment for optimum SWR and reliable performance, making it well suited to mobile HF, portable field operation and POTA-style deployments.
The built-in controller also provides 10 memory presets, allowing favourite frequency positions to be saved and recalled quickly. This reduces retuning time when changing bands and makes the antenna more practical for real operating conditions.
Built for demanding outdoor use, the GRA-AT330T features rugged IP68-rated waterproof construction, helping protect it from rain, dust and harsh field environments.
Key Features
- Motorised HF screwdriver antenna
- Wide frequency coverage from 3.5MHz to 50MHz
- Suitable for 80m to 6m operation with appropriate whip configurations
- Direct coil control for accurate antenna tuning
- Built-in controller for precise adjustment
- 10 memory presets for quick frequency recall
- Designed for mobile, portable and field use
- Ideal for HF mobile operation and POTA activations
- IP68-rated waterproof construction
- Rugged design for outdoor operating conditions
Typical Applications
- Mobile HF operation
- Portable field stations
- POTA activations
- Compact operating locations
- Restricted-space antenna installations
- Multi-band HF and 6m operation
Important Note
Frequency coverage and tuning performance will depend on the whip configuration, installation method, grounding, counterpoise arrangement and mounting position. For best results, install the antenna carefully and check tuning with a suitable SWR meter or antenna analyser.
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]