tisdag 13 oktober 2015

Minima PA Driver and Rx Preamplifier


Minima PA Driver and Rx Preamplifier.


I start at locking in the book Experimental Methods in RF Design, page 2.32. There was a good example on a amplifier for higher Pout then I need, so I lower the current. I do a test and find it working. I add a Rx preamp switchable in/out amplifier, copy from a QRP station.


Made a PCB and it is now finished.


The Result, gain 1.8 MHz 32 dB, 30 MHz 29 dB.


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