Japanese : Jul. 19, 2011, English : Jun. 3, 2012
Last update : June 16, 2018
Japanese page is here.
Homebrew accessories related to my transceivers are shown in these pages.
Please click the image or the title on the table.
Excuse me. Most pages are written in Japanese.
|Memory keyer OIKey-F88
( Using a PC board affiliated to a Japanese magazine "CQ ham radio" )
|Oak Hills Research WM-2 QRP Wattmeter (English)|
|Oak Hills Research DD-1 Frequency Counter / Digital Dial (Japanese)|
|Casing of SDR-49 (Japanese)|
|FET Differential Headphone Amplifier (Japanese)|
Copyright (C) 2012-2018 by MATSUMOTO Koichi, JN3DMJ