BL2 250W 1:1 & 4:1 (SWITCHED) BALUN

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The Elecraft BL2 is a ruggedized general-purpose wideband balun that can be configured as either a 1:1 or 4:1 balun by means of a slide switch. It is intended to match balanced feed lines to the unbalanced antenna connection of an Elecraft or other manufacturer’s transceiver or antenna tuner.
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Our highly efficient balun can handle up to 250 watts and can handle 1:1 and 4:1 ratios via an onboard switch. It is very small (just 1.5 x 3") and lightweight, making it an excellent choice for both home and field use. It uses a special winding technique to reduce losses and extend the useful range, resulting in an SWR of less than 1.2:1 from 500 kHz to 55 MHz (200-ohm load). It includes rugged screw terminals for the balanced output as well as ground and can be used in a variety of matching applications.

Note: This product is a kit that may involve building the product by selecting individual components, soldering them to the circuit board, winding toroids, installing LEDs and displays, calibrating circuits to meet specified performance levels. 


  • Power Rating: 250 watts with a matched load.
  • Bandwidth: Input VSWR less than 1.25 when connected to a 200-ohm resistive load, 500 kHz to 55MHz

    BL2 250W 1:1 & 4:1 Balun Quantity Price
    BL2 BL2 250W 1:1 & 4:1 (switched) Balun