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Showing posts from February 1, 2011

How to quiet the IC706?

The IC706 ( ohne alles)    is a great set  but has an annoying fan  that always runs. Now using it again for receiving  137kHz  it becomes a problem if you switch of the IC706 it is a relieve. I tried to find if something could be done about that noise. The FAN runs at lower speed during receive. There is an 47 Ω R  in series that is shorted during TX (the schematic says 470 Ω  but i doubt that. This R is located at the PA board close to the connector of the FAN. It is a power SMD. Recently i got an SMD soldering station the AOYUE 968   this great demo is the 962 without the extra 30W soldering tool real nice  3 functions in one  120€  Elektroshop  real heavy device 5kG?  8€ shipping costs.  incredible how they can do it!  But not to hasty .. first test and measure before changing anything. Had some exercise with a defective Satellite  converter  real interesting parts that normally would just be wasted. What about a I2C controlled 2


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