| Current Balun 1:1 | Broadband-Balun 1:1 | Balun 1:4 | Balun 1:1 + 1:4 | MTFT-Un-Uns | Endfed-Un-Uns 1:64 |
Current Balun 50 Ohm 1:1
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This current balun is an ideal solution for feeding antennas with a symmetrical 50-Ohm-impedance like beams or dipoles. In the shack you should use such a balun for common wave suppression at the end of the antenna coax-cable near the Transceiver. For 7-50 MHz 2 x 4 turns For 1,8-50 MHz 2 x 5-6 turns
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You can mount the balun in a box with two coax-sockets, or like here with socket and plug connector or with two plug connectors and cable ends. With Aircell-5 coax or RG58LL the balun handles 1 KW |
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FT140-43 with 2x5 turns RG188A/U |
FT140-43 with 2x5 turns RG316, handles 500 Wtts RF |
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Test circuit for the effectivity of the balun R/2 is 25 Ohm. If the balun is not working properly he "sees" the load as 12,5 Ohm (2x25 Ohm parallel) and the result is a bad SWR. Here the current balun with 2x4 turns has a good barrier effect between input and output. |
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