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The DU1500T Diff. optimizes the performance of your antenna and transmitter or SWL receiver,by providing adjustable impedance matching.
The DU1500T Diff. 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.
Meter…………………………Cross needle Power and SWR meter.
Capacitor………………….Continuous rotation 3,5kV capacitor 500pF
Inductor: 0.2-18 uH silver-plated roller inductor.
Antenna Switch Selector………Five position ceramic switch:
COAX 1, Tuned and COAX 2 Tuned and BYPASS,
COAX 1 DIRECT,COAX 2 DIRECT
Power Range Switch…………..Two position: 200W/2kW
!!1.8MHz SWR wors then 1:3 MAX 800W!!
INPUT.................SO-239 Teflon connector
COAX 1..............SO-239 Teflon connector
COAX 2..............SO-239 Teflon connector
COAX 3..............SO-239 Teflon connector
Balanced line and single wire..........High voltage ceramic terminals
Include 4:1 balun
Circuit Type:............................. T- network
Frequency Range:.....1.8-30MHz continuous
RF Power Rating:..................... 2000 watts
Input Impedance:......................... 50 ohm
Output impedance: a wide range from low to high impedance.
Output Matching Range: At least 10:1 SWR,any phase angle.
Size: H12 x W33 x D33 cm Depth measurement cabinet only
Does not account for knobs or connectors.
Weight:...................... 5.5 kg
http://ha8du.ham.hu/du_1500_eng.html
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