Archive for date: January 23, 2009

QRP Transmitter Design

January 23, 2009 | Amateur Radio | By: Mark VandeWettering

Here’s a nifty PDF on QRP transmitter design. It looks like it might have been cribbed from one of Doug Demaw’s books (which you should buy if you are interested in this stuff), but it’s just a few pages long, and is quite practical. I think I’m actually getting to the point where I understand […]

Common emitter amplifier design using ngspice…

January 23, 2009 | Amateur Radio | By: Mark VandeWettering

Okay, I’ve been reading some of my variou sources on amplifier design including EMFRD and the ARRL Handbook, and decided to try to test my understanding of them by coding up a simple common emitter amplifier, and then testing the model by plotting out the voltages using ngspice, the open source version of the popular […]