HF High Power Impedance Transformers

Multi Ratio 4:1/6:1/9:1 CUBE™ Balun, 1.8-61 MHz, 1.5 KW

SKU CB-4-9-1500
$129.95
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Multi Ratio 4:1/6:1/9:1 CUBE™ Balun, 1.8-61 MHz, 1.5 KW
Product Details
MPN: CB-4-9-1500
Country/Region of Manufacture: USA
Type: Balanced output (BALUN)
Input ohms/Output ohms: 50:200, 50:450
Frequency Range < 2:1 SWR (MHz): 1.8-61 MHz
PEP Power Rating (watts): 1500


1500 Watt 4:1/6:1/9:1 CUBE™ Balun – Model CB-4-9-1500

Model CB-4-9-1500 is a 4:1 and a 9:1 balanced output (balun) housed in a Nema enclosure box (4″ x 4″ x 2″) with a top eyebolt halyard hoist, two side studs for 4:1 and two additional side studs for 9:1 outputs, each capable of input power levels up to 1.5 KW PEP when used with a matched load. The 4:1 ratio takes 50 ohms input and matches to 200 ohms output and the 9:1 ratio takes 50 ohm input and matches to 450 ohms output between 1-61 MHz under 2:1 SWR under matched load conditions.

Now you don’t need to buy two separate baluns or guess which balun to use - you get the 4:1 and the the 9:1 in a single package! – just buy the CB-4-9-1500 and pick the output ratio that best matches your antenna tuner! (Note: you can only use 1 set of outputs at a time)

Application note: If you use 1 of the 4:1 and 1 of the 9:1 terminals on opposite sides, then the output wlll be 300 ohms or a 6:1 balun!

The high power ferrite impedance transformer series (> 1:1), configured with outputs to act as a baluns (unbalanced coax in to balanced load output) or as ununs (unbalanced coax input to unbalanced load output) are designed for demanding radio transmitter stations that run over 1,000 watts PEP or run continuous modes like AM, digital, RTTY, FM, etc. at high power levels. Radio contest operators, commercial shortwave broadcast, and industrial and commercial stations use these transformers for for a variety of balanced and unbalanced antenna loads.  Baluns are typically used for balanced loads and antennas like dipoles, loops, log periodics, and direct feed yagi/beams.  Ununs are used  with verticals, end fed wires, horizontal dipoles, G5RV/ZS6BKW, Zepps, vertical wire beams, etc).  All products are in an enclosed NEMA water resistant box with SO-239 input connector and stainless steel side/top studs with wing nuts or side and top eyebolts.  The enclosure box has mounting “side feet” for attachment to a post or antenna boom using nylon ties.