Tuesday, 8 August 2017

WSPRlite Power Test - Results

Following on from the last post, I decided to carefully look at my WSPRlite unit and test its power output against that set, using a calibrated oscilloscope.

The results are as follows:

At 14MHz:

200mW set: 176mW measured output
100mW set: 114mW
50mW set: 57.6mW
20mW set: 23.6mW
10mW set: 11.8mW
5mW set: 5.2mW

I haven't conducted a comprehensive test at other frequencies.  But, I did notice a drop to 144mW at 10MHz when 200mW was set.  I will look at this in more detail in the near future.  By 7MHz, the drop was to 168mW, rising to 189mW at 3.5MHz.

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