long the standard of the industry the W2AU baluns are built to last!
The W2AU is the preferred Balun of Amateurs worldwide. W2AU’s operate at a low VSWR from 1.8 to 40 mHz, and handle powers up to 2 KW PEP (at SWRs of less than 3:1).
W2AU Baluns are transformer designs with ferrite cores to provide 95% minimum coupling efficiency. Each has a built-in lightning arrestor, hang up hook, and 600 lbs of pull-apart strength in a weatherized, rugged package using only stainless steel hardware and quality materials.
Two models are available. The 1:1 matches 50(75) ohms unbalanced coax to 50(75) balanced dipoles. The 4:1 matches 50(75) ohm unbalanced coax to 200(300) ohm folded dipoles.
For matching yagi or quad elements select the Beam models of the
famous W2AU or W2DU Baluns. These models are designed to be mounted
horizontally to a beam’s boom. Pigtail wires are provided in lieu of the
hooks on the wire models to connect these Baluns to the driven element.
Specs for beam models are the same as their respective wire models with
the exception that the W2AU and W2DU HF beam models only operate from
40 to 10 meters.
While the RF currents flowing along the coax shield are “choked” out by the balun/isolator, the internal 50 ohm signal is completely unaffected. Some users have noted a reduction in interference with the use of line isolator between their transmitters (transceivers) and linear amplifiers. Another use is placing one at the vertical, beam, or quad antenna to augment the antenna’s matching system to coax.
= All W2AU series baluns are VOLTAGE type designs =
These fine Antenna products are now available only
NOTE: All baluns are available with “N’ connectors, or double S0-239's when requested.
- Additional charge of $2.00 per connector -