Introduction
Congratulations on selecting the LDG balun. Your LDG balun allows you to connect longwires
and antennas fed with ladder line to your LDG tuner. Two versions are available: the RBA-1
provides a 4:1 impedance transformation, while the RBA-1:1 has 52 ohm input and output.
LDG pioneered the automatic, wide-range switched-L tuner in 1995. From its laboratories near
our nation’s capitol, LDG continues to define the state of the art in this field with innovative
automatic tuners and related products for every amateur need. The RBA-1 and RBA-1:1 are
valuable accessories for any LDG tuner, extending its usefulness to virtually all types of antennas
and transmission lines in amateur use.
Features
•
Compact, sturdy construction
•
Standard SO-239 jack for coax input
•
Twist-on binding posts for ladder line, longwire or random wire attachment
•
Can be waterproofed for outdoor use
•
Broadband operation; covers the entire HF spectrum from 1.8 – 30 MHz
•
Handles up to 200 watts continuously
Your LDG balun performs two important functions:
1. It provides a convenient connection interface between coaxial cable and either ladder line or a
longwire antenna
2. It converts from an unbalanced source (e.g., a transmitter or tuner with coaxial output) to a
balanced transmission line (e.g., ladder line)
In addition, the RBA-1 provides a 4:1 impedance conversion permitting use of higher impedance
antennas and transmission lines.
Specifications
•
Weight: 6 oz (with enclosure)
•
Frequency Coverage: 1.8 to 30 MHz
•
Power Range: to 200 watts
•
Easy to weatherproof
•
Size overall: 5 x 2.5 x 1.25 inches
•
Impedance transformation 1:1 or 4:1
2
