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Introduction:
Congratulations on choosing the LDG RT-11 tuner. The RT-11 is a full-featured
remote automatic antenna tuner designed for the HF and 6 meter ham bands (1.8 to 54 MHz), for
use with transmitters or transceivers outputting between 0.1 to 125 watts. The tuner uses the
highly versatile “Switched L" configuration with 256 capacitor, 256 inductor and High/Low
impedance settings to provide over one hundred and thirty thousand possible tuning combinations.
The "L" network will match practically any coax-fed antenna (dipole, vertical, sloper, beam, etc.)
within its specified performance range. Long wires, and dipoles fed with ladder line can be
matched using the LDG RBA-1 external balun, sold separately. Regardless of antenna type,
tuning time is between 0.1 and 5 seconds, typically about 3 seconds.
Features and Specifications:
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Designed for remote mounting and operation, on a tower or near the antenna
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Water resistant ABS plastic case with integral flange mounting bracket; protects circuitry
from rain and other normal weather
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Microprocessor controlled, fully automatic
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Covers 1.8 to 54.0 MHz continuously
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Tunes 6 to 800 ohm loads, 10:1 SWR, 3:1 or less on 6 meters using switched "L" network
tuning circuit
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Optional remote control head available. Remote size: 5” x 3” x 1”
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Optional Icom, Alinco and Kenwood TS-50 interface available
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Inductor range: to 20 uH
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Capacitor range: to 2700 pF
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Tuning time: 0.1 to 5 seconds, 3.0 seconds typical
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Current Consumption: 7 to 250 mA, 100 mA typical
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Power requirements: 11 to 20 VDC @ 250 mA max
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RF power range: 0.1 to 125 watts (50% duty cycle)
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For Dipoles, Verticals, Vees, Beams or virtually any coax fed antenna
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Optional external balun available for longwires or antennas fed with twinlead
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Enclosure size: 8.5” x 5.5” x 3.0”, weight 2.5 pounds
Summary of Contents for RT-11
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