The GRA‑AT330T/TC is a premium screwdriver antenna—a portable HF antenna with a built‑in 12 V motorized coil and memory tuning system. Ideal for operators needing quick deployment, compact storage, and precise tuning across 3.5–30 MHz (up to 50 MHz), making it perfect for POTA, HOA, mobile car operations, or field day uses
🟢 HF coverage from 3 MHz to 30 MHz (extends to 50 MHz depending on whip)
🟢 Electric remote tuning with 10 memory presets via controller—push‑button simplicity
亞馬遜
🟢 Motorized coil → Screwdriver antenna mechanism: adjusts coil like an electric screwdriver for seamless band changes
Thetoolshut
🟢 AT330T: UHF connector / AT330TC: 3/8‑24 base making it ultimate for coil, whip, or tripod mounting
🟢 IP68‑rated 5 m control cable included for durability in rugged environments
🟢 Stealth install for HOA and rapid deployment in parks or mobile setups
YouTube
Setup in minutes and tune in seconds—GRA‑AT330 is the ultimate portable screwdriver HF antenna that brings convenience and high performance to any field operation.
Frequency Range: 3.5 ~ 50 MHz
VSWR: < 2.0
Max Power: 200W (SSB)
Impedance: 50 Ω
Power Supply: DC 12V / 100mA
Weight: 1.78 kg (3.93 lb)
Antenna Length:
Coil body: 48.5 cm (19.1 in)
Telescopic whip (7~50MHz): 18.5 cm / 127.5 cm (7.28 / 50.2 in)
Telescopic whip (3.5~30MHz): 24.5 cm / 217 cm (9.65 / 85.43 in)
Power Cable: 1 m (3.28 ft)
Antenna connection: 5 m (16.4 ft)
Connector Type: UHF or 3/8-24 (depending on variant)
Controller Memory: 10 slots
Waterproof Rating: IP68