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The Vine Antennas DU-1500T is a high-performance manual antenna tuner and SWR/power meter, designed to optimize the efficiency of your transmitter, antenna, or SWL receiver. With precision impedance matching and built-in SWR and power metering, the DU-1500T allows you to achieve the best possible match across HF frequencies from 1.8 to 30 MHz.
Ideal for both amateur and professional use, this heavy-duty tuner supports up to 2 kW of power and features a highly flexible tuning system with dual capacitors and a comprehensive antenna switching system.
✅ Wide Frequency Range:
Tunes continuously from 1.8 MHz to 30 MHz, perfect for HF operation.
✅ High Power Handling:
Rated for 1500W continuous, with a maximum of 2 kW PEP.
✅ Precision Impedance Matching:
Adjustable input and antenna capacitors (4.5kV, 330pF each) help fine-tune your system for optimal SWR.
✅ Cross-Needle Power & SWR Meter:
Displays forward and reflected power in real-time, with accurate SWR readings at the needle intersection.
✅ Multiple Output Modes:
Five-position ceramic antenna switch supports:
Tuned Coax 1
Tuned Coax 2
Bypass
Coax 1 Direct
Coax 2 Direct
Plus a Tuned Balanced Line + Coax 1 mode for twin-lead or wire antennas.
✅ Built-In 4:1 Balun:
Easily tune balanced antennas using the high-voltage ceramic terminals.
Frequency Coverage: 1.8 – 30 MHz
Power Handling: 1500W continuous, up to 2kW max
Power Range Switch: 200W / 2kW
SWR Meter Type: Cross-needle for forward/reflected power and SWR
Input Impedance: 50Ω
Output Impedance: 25–600Ω (balanced), up to 2000Ω (wire)
Meter Accuracy:
200W Scale: Forward 200W, Reflected 40W full scale
2kW Scale: Forward 2kW, Reflected 400W full scale
Connectors:
Coax 1 / Coax 2: SO-239 (Teflon)
Balanced Output: Dual ceramic terminals
Bypass / Dummy Load: SO-239
Ground Post: Wing-nut terminal
Dimensions: H 330 × W 330 × D 120 mm
Weight: 4.5 kg (10 lbs)
Input Tuning (Transmitter):
Adjustable capacitor for matching input impedance.
Antenna Tuning (Output):
Adjustable capacitor for matching output impedance.
Power/SWR Meter:
Dual-needle display for monitoring real-time performance.
Output Selector (5-Way Switch):
Coax 1 Tuned
Coax 2 Tuned
Bypass
Coax 1 Direct
Coax 2 Direct
Balanced Line + Coax 1
Range Selector:
Switches between 200W and 2kW meter ranges.
Connect the transmitter to the RF Input using short coax.
Attach antennas to Coax 1, Coax 2, or the Balanced Output, depending on type.
Use the Output Selector to choose the correct tuning path.
Adjust the Input and Antenna controls while monitoring the SWR meter to reach the lowest possible SWR, ideally 1:1.
⚠️ Important: Always begin tuning with transmitter output at 50–100W. Do not exceed 1500W average. Never operate with the cover removed.
Do not touch the balanced or end-fed antenna terminals during transmission—high RF voltages may cause burns.
When using a balanced line, install the jumper at Coax 1 and set the selector to “Tuned Coax 1.”
For wire antennas, use the ceramic terminals without the jumper.
A dummy load can be connected to the BYPASS port for safe tuning or testing.
The Vine Antennas DU-1500T is built for serious operators who need a robust, precise, and powerful antenna tuning solution. Whether you’re working with dipoles, verticals, beams, or long wires, the DU-1500T gives you unmatched flexibility, high power capability, and accurate system monitoring—all in one durable unit.
