受BH5UNT引用的DG1JAN 的 Unibalun 天线 ( https://github.com/DG1JAN/UniBalun ) 原文链接：https://forum.hamcq.cn/d/6207 和 Jonathan Kayne, KM4CFT 写的文档（https://302h31611165464.s4shops.com/assets/images/Current_Documents/20W-EF-Antenna-Assembly-Instructions_1-9-2024.pdf )启发，我试着制作了用FT82-43内嵌FT50-43，并用0.5mm漆包线按3比21绕制的端馈unun，今天以背对背的方式测试了效率，结果如下，总体效率看起来还可以，测试不太严谨，仅供参考 [upl-image-preview uuid=b64adadf-cb75-4584-97d1-72e4e341a38d url=https://storage.hamcq.cn/2025-09-07/1757231948-273570-screenshot-2025-09-07-15-58-45-12-99c04817c0de565.jpg alt={TEXT?}] [upl-image-preview uuid=be23fcd0-c91e-4bd9-85cf-56f072471cd9 url=https://storage.hamcq.cn/2025-09-07/1757231956-394156-screenshot-2025-09-07-15-58-36-36-99c04817c0de565.jpg alt={TEXT?}]

@"BG5ELQ"#p77977 什么QRO教信徒

Testing the non-ideal efficiency of an end-fed antenna made with FT82-43 and FT50-43 magnetic loops.

The Unibalun antenna, referenced as DG1JAN by BH5UNT https://github.com/DG1JAN/UniBalun )
Original link:https://forum.hamcq.cn/d/6207
And the document written by Jonathan Kayne, KM4CFT (https://302h31611165464.s4shops.com/assets/images/Current_Documents/20W-EF-Antenna-Assembly-Instructions_1-9-2024.pdf ) Inspiration,
I attempted to create a setup with an FT82-43 embedded within an FT50-43, and used 0.5mm coated wire to wind the end-fed antenna in a 3:21 ratio. Today, I tested its efficiency with the two antennas facing each other, and the results are as follows. Overall, the efficiency seems reasonable, but the testing was not very rigorous; this is just for reference.

240 sets of 140 each😬

BG5ELQ What do QRO followers believe?

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