4:1 dual core current balun

Constructed using dual 240/61 cores.  Stainless steel hardware. 

This 50:200 ohm dual core current balun is actually designed for a 65:260 ohm making it useful for 75:300 and 50:200 ohm ranges. 

We have measured it at 100, 200, 300 and 400 ohm loads with satisfactory conversion results capable of tunable SWR under 2:1 with an antenna tuner. 

At 50:200 it has an  SWR < 1.25 from 1.8 to 54 Mhz and has been used very successfully with a 160 meter OCF antenna (20% offset feed point). 

With dual cores you get great frequency range, equal current in each leg and very conservative 1.5KW rating.

Full power balun for OCF antennas, folded dipoles, Zepp, longwire, and multiband delta loop antennas.  A real

workhorse with built in choking action for common mode rejection.

Current Stock:
2.00 LBS
8.00 (in)
12.00 (in)
3.00 (in)
Shipping Cost:
Calculated at Checkout

Reviews Hide Reviews

Excellent Balun

David Carskadon on 15th Nov 2019

Made a 40 OCF Dipole hanging up at 50'. Under 1:5 on 40/20/10. Around 2:1 on 12 and 17. Works as advertised. Been pushing 600 watts SSB into no problem. Highly recommended.

Well made 4:1 balun

ND3C on 15th Nov 2017

NIce feature is coverage of frequencies through the 6 meter band. Robustly built.