Converted-Mouse Paddle with a built-in Keyer
Cryptic letters are codes for Japanese/Chinese characters. English readers may skip them.
内蔵のキーヤーも自作です。回路はARRL 発行の "Solid State Design for Radio Amateurs"という本からとりました。 一番下の写真のように、当局はいつも親指と人指し指で操作します。
The built-in keyer is also homebrewed from scratch. The design is taken from the ARRL book "Solid State Design for Radio Amateurs". I usually operate this paddle with the thumb and forefinger as is shown in the picture at the bottom.

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MINOWA, Makoto
7N3WVM
Last revised 1997-09-12.