12:1 Baluns/Ununs

Termination Resistor, 600 Ohm Non-Inductive for T2FD, BBTD, Rhombic, 1-61 MHz, 600 Watts

SKU TR-600-600
$99.95
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Termination Resistor, 600 Ohm Non-Inductive for T2FD, BBTD, Rhombic, 1-61 MHz, 600 Watts
Product Details

Broadband, Non-Inductive Termination Resistor load used on many terminated antenna types such as T2FD, Broadband Terminated Dipole (BBTD), Rhombics and others

Resistive Value: 600 ohms (+/- 10%)

SSB (25% duty cycle) rating in Watts: 600

CW/FT8 (50% duty cycle) in watts: 300

Length (tip to tip) Inches: 11 1/4"

Width inches: 2 1/4"

Inductance < 20 nH (1-61 MHz)

Internal Resistance Wattage: 200 watts


12:1 Baluns are useful between 600-650 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.