“ The 75Ωto50Ω Balun” 「バランの設計 75Ω対50Ω」

2012/09/10                 日本語は下にあります。       ve3cgc@hotmail.com


“ The 75Ωto50Ω Balun” 「バランの設計 75Ω対50Ω」



I received an e-mail from K5MBA, Bob, last month about the 75Ωto50Ω Balun I designed and up-loaded in my blog a few years ago.   The article I up-loaded did not show the schematic and calculation.

Here is the information needed for the balun.  The calculation was exhibited in the 1995 ARRL handbook and it can be used to design and homebrew other baluns required for your radio station.  I used the following books as the reference.

(1) The ARRL handbook for the radio amateurs, 1995 issue.

(2) The toroidal core handbook by H. Yamamura, JF1DMQ.     ISBN4-7898-3043-8


The baluns I use were all homebrewed including a 4 to 1 balun for my loop antenna.


Hiro Hayashi, VE3CGC                 ve3cgc@hotmail.com



In Japanese:

「バランの設計 75Ω対50Ω」


先月、8月にK5MBA、ボブ、よりメールをもらい、以前このブログに載せた75Ω対50Ωのバランの巻き数とか写真について聞かれました。 今回は配線図と設計の計算方法を参考に載せます。 この計算方法はどのバランを作る時も使えます。  参照した本は以下の2冊です。

(1)  1995年度版のARRLのハンドブック

(2)  定本 トロイダルコア 活用百科 (山村英穂)



はやし ひろ VE3CGC   ve3cgc@hotmail.com

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