I was playing with my bitx build yesterday. Specifically, I tried to add CW to the rig. Original bitx20 is a SSB rig. I my mod was inspired from PY2OHH bitx40. I wired up a 10mhz crystal oscillator as shown below. The idea is to inject 10mhz ( approximately) at the beginning of transmitter IF… Continue reading Adding CW to bitx
Several friends have asked me to explain the procedure and formalities of becoming a ham radio operator in India. Unlike many of the western countries , the active population of amateur radio operators in India is very minuscule. The major reason for this is the cumbersome procedure and the lack of interest from concerned authorities.… Continue reading How to become a HAM radio operator in India
Most of the home brewers and electronics hobbyist see fabricating a PCB as a roadblock . I will describe an alternate approach to circuit construction where you need only bare copper clad sheet. This method is some times called Manhattan method.( I don’t know the reason.) The basic ingredients you need for this type of… Continue reading Manhattan Style construction for Hobbyists
The bitx, I built using the ugly construction method was too ugly to look at. The board was rebuilt using Manhattan style construction last week end . Now the board looks tidy and neat. The added advantage is that I can plug and play with any section. Individual sections are built on smaller PCBs and… Continue reading Bitx 20 update: The band pass filter.
The Amateur Station Operators Certificate Examination is conducted by Ministry of communication Government of India. You have to pass this examination if you want to be a HAM radio operator in India. Several SWLs have asked me about the nature of the examination and how the question papaers look like. I am posting some sample… Continue reading Sample question papers for ASOC Examination