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- Page 1 DU-1500T Antenna Tuner User’s Manual ARRAY SOLUTIONS 2611 N Belt Line Road - Suite 109 Sunnyvale, TX, 75182, USA +1 214 954-7140 office +1 214 954-7142 fax info@arraysolutions.com www.arraysolutions.com...
- Page 2 DU-1500T Antenna Tuner FEATURES The DU 1500T optimizes the performance of your antenna and transmitter or SWL receiver by providing adjustable impedance matching.The DU1500T also measures the Power and Standing Wave Ratio (SWR), which allows you to tune the indicted SWR to the lowest possible ratio for the selected transmit frequency.
- Page 3 Controls and Connectors DU1500T Front Panel Front Panel Functions 1. Output (Transmitter) Continously adjustable output capacitor 2. Power and SWR Meter The dual needle meter displays FORWARD and REFLECTED Power in Watts. The SWR in measured where the two needles intersect on the red curved scales. 3.
- Page 4 4. DIRECT-TUNED MODE SWITCH Five-position rotary switch an output coaxial connector. 1. TUNED COAX 1 selects the COAX 1 connector trough the impedace matching circuit. 2. TUNED COAX 2 selects the COAX 2 connector trough the impedance matching circuit. 3. DIRECT BYPASS selects BYPASS COAX connector bypassing the impedance matching circuit but provinding SWR, FORWARD, and REFLECTED power meter readings.
- Page 5 Rear Panel Connectors DU1500T Rear Panel RF INPUT - Coaxial connector for input from SWL receiver or transmitter. COAX 1 - Coaxial connector for output to Antenna One. COAX 2 - Coaxial connector for output to Antenna Two. BYPASS - Coaxial connector for output to dummy load or third coax output. GROUND - Post/Wing-nut type ground connector.
- Page 6 Installation Select a location for the DU 1500T that allows the connectors to be free of any possible Contact during operation. WARNING: Some balanced or end-fed antennas will produce high RF voltages at the wing nut connector. RF burns may occur if touched during transmission 1.
- Page 7 TUNING 1. Select the band and frequency of desired operation. 2. Set INPUT, OUTPUT, and BAND SWITCH controls to the suggested settings before applyng transmitter power. Actual settings may vary from antenna to antenna. 3. Set up your transmitter to a low power output. If your transmitter has a TUNE position, select that position.
- Page 8 NOTES 1. An SWR of 1:1 is best, but an SWR as high as 2:1 may be acceptable. Check you transmitter manual for details. 2. If you cannot get an acceptable SWR, lengthen or shorten you antenna and/ or check feedlines and retune. 3.
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