Monthly Archives: August 2015

“ My EICO 720 QRP “ 「EICO 720 QRP送信機」

2015/08/20            日本語は下にあります。  ve3cgc@hotmail.com Subject: “ My EICO 720 QRP “ 「EICO 720 QRP送信機」 The EICO 720 transmitter was introduced in the market in 1958. It has 6CL6, 6AQ5, 6AQ5, GZ35 and 6146, five vacuum tubes with 90 watts of power on … Continue reading

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“ An isolation transformer “ 「アイソレイシオン トランスフォーマー」

2015/08/04            日本語は下にあります。  ve3cgc@hotmail.com    Subject: “ An isolation transformer “ 「アイソレイシオン トランスフォーマー」 Schematic I came across an “isolation transformer“ when I was watching about ham radio on You Tube. It is a good device to run antique radios and old radio instrument for safety … Continue reading

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