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FEATURES
The DU 1500 optimizes the performance of your antenna and transmitter or SWL receiver
By providing adjustable impedance matching.The DU 1500 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.
SPECIFICATION
FRONT PANEL INDICATORS AND CONTROLS
Meter..............................Cross needle Power and SWR meter.
CONTROLS
Input Tuning......................Continuous rotation 4,5kV capacitor 330pF
Antenna Tuning..................Continuous rotation 4,5kV capacitor 330pF
Antenna Switch Selector.........Five position ceramic switch:COAX 1, Tuned and
Power Range Switch..............Two position: 200W/2kW
!!1.8MHz SWR wors then 1:3 MAX 800W!!
Coax 1.................................SO-239 Teflon connector
Coax 2.................................SO-239 Tflon connector
Balanced Line........................Dual high voltage ceramic terminal
OTHER
Frequency Coverage..................1.8-30MHz ,continuously tunable
Power Maximum.....................1500W max 2kW
Input impedance......................50ohm
Output inoedance.....................25-600ohm and wire 2000ohm
Dimension..............................H 330xW 330xD 120
Weight..................................10lbs.(4,5kg)
DU 1500 T ANTNNEA TUNER
COAX 2 Tuned and BYPASS,COAX 1 DIRECT,
COAX 2 DIRECT
Include 4:1 balun
1
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Related Manuals for DX Engineering DU 1500 T
Summary of Contents for DX Engineering DU 1500 T
- Page 1 DU 1500 T ANTNNEA TUNER FEATURES The DU 1500 optimizes the performance of your antenna and transmitter or SWL receiver By providing adjustable impedance matching.The DU 1500 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 2 CONTROL/CONNECTORS FRONT PANEL FUNCTIONS 1. Output (Transmitter) Continously adjustable input capacitor 2. POWER/SWR METER Dual needle meter displays FORWARD and REFLECTED Power in Watts. The SWR in measured where the two needles intersect on the red scale. 3. INPUT (Antenna) Continuously adjustable output capacitor.
- Page 4 REAR PANEL CONNECTORS 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 5 INSTALLATION Select a location for the DU 1500 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 BANANA CONNECTORS.RF BURNS MAY RESULT IF TOUCHED DURING TRANSMISSION. INSTALLATION PROCEDURES 1.
- Page 6 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 you transmitter has a TUNE position,select that position.
- Page 7 NOTES 1. An SWR or 1:1 is best,buta n 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 feedlines and retune. 3.
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