zaterdag 26 september 2009

power boosted to 5 mW

I made a small amplifier to boost the signal to 5 mw. The first amplifier is build around a bfy 90 in class a. A 2N2219 is used to boost the signal to 5 mW. This amplifier has a tuned circuit.

Initially the power output was much to high. The 2N2219 worked as class B amplifier. I measured 100 mW. So I added a resistor at the input of the first amplifier. This reduced the power to 5 mw.

Now I will add the RX TX relais.

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