HF High Power Impedance Transformers

1032773520 - HF High Power Impedance Transformers
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50:600 ohm, (12:1) CUBE™ Balun/Unun, 1.8-31 MHz Balun/Unun, RX Only/1KW/2KW/3KW PEP, T2FD, Rhombic, End Fed, Flagpole

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/50:600 ohm (12:1) Transformers
SKU CB-12-1000TS
$119.95
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List price $139.95 Save 14%
Bulk pricing available for quantities of 2 units or more
Balun/Unun?
PEP Power rating
Balun Output
1
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QuantityPrice per itemDiscount
2 items$111.957% off
10 items$103.9513% off
50 items$99.9517% off
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50:600 ohm, (12:1) CUBE™ Balun/Unun, 1.8-31 MHz Balun/Unun, RX Only/1KW/2KW/3KW PEP, T2FD, Rhombic, End Fed, Flagpole
Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/50:600 ohm (12:1) Transformers
Product Details
Country/Region of Manufacture: United States
Type: New
Input ohms/Output ohms: 50 in/600 out balanced (balun) or unbalunced (unun)
Frequency Range < 2:1 SWR (MHz): 1.8-31
PEP Power Rating (watts): RX only/1000/2000/3000
Insertion Loss (dB): < .1 dB
Input Connector: SO-239
Hardware Type: Stainless Steel
Enclosure Size: 4 x 4 x 2, 3KW = 4 X 4 x 4
Weight (pounds): 2


HF 12:1 Impedance Transformers

12:1 Baluns are useful transformers for 600 ohm balanced loads the impedance at the end of the feed line is 600 ohms (1/2 wavelength feed line), or high impedance feeds for rhombic, T2FD and traveling wave antennas.

12:1 Ununs are useful between coax and long wires with a load impedance near 600 ohms like a beverage antenna. Shortwave listener antennas also can benefit with the 12:1 unun and it may provide a better match than 9:1 ununs – this means quieter noise levels and stronger signals so you can hear distance stations easier.

For end fed antennas, use a 9:1 unun or 12:1 unun - also available in the "Bullet" antenna end fed style (Bullet-12U-500)

Receive only baluns/ununs are rated for 100 watts PEP

All enclosure boxes have 2 side flanges with 1/4" holes.

All of these products are made to order and typical production time is 10 days depending on quantity.

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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.