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LDG Electronics RU-4:1 - UNUN, 200 W, 4:1 Ratio, 1.8-30 MHz, Ferrite Core, 200 ohms Termination Impedance, UHF Female, SO-239

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The RU-4:1 is a 4:1 unun designed to allow your LDG Automatic Antenna tuner to easily match vertical and end-fed antennas. It can also operate "stand alone", and may not require an LDG tuner for resonant verticals. 
It may be used with any antenna project where a 4:1 unun is needed. The connection is by 5-way, twist-on binding posts, connect the red post to the antenna.

LDG RU-9:1 Unun Specs:

Ratio: 4:1
Frequency Coverage: 1.8 to 30 MHz.
Power Range: Up to 200 watts PEP
Enclosure Dimensions (WHD): 2.5 x 5 x 1.25 in.
Weight: 6 oz.
LDG Electronics warrants all merchandise against defects in material or workmanship for a period of two years from the date of purchase

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