Monthly Archives: November 2009

SW-40 & SW-20 repair

2009/11/08                  日本語は下にあります。   “ SW-40 and SW-20 intermittent cracking noise in keying“  「SW-40とSW-20の送信時のガリガリ音」   I built the SW-40 and SW-20 QRP transceivers and they have been working well.  In the spring, 2009, the two transceivers generated the intermittent … Continue reading

Posted in ハム ラジオ、アマチュア無線、ham radio, amateur radio | 2 Comments