SP6AB radio blog

I published post about making a home made filter board for Yaesu radios and some folks has written me to make the boards for them. Because ...

Recently I had to repair friend's Kenwood TR-751. Quick internet query showed that the problem is with negative AGC voltage not being st...

I purchased Collins mechanical filter XF-115C 500Hz wide which was soldered out of the CW filter for FT-847 and decided to design a board to...

My antenna situation in home QTH is far from perfect. Sometimes I have been able to throw some wire onto a tree with mixed success, no chanc...

I’m 45 years old and have been interested in electronics since childhood. In my youth years I also started taking interest in radio techno...