1. Don’t rely upon 44 Net/AMPRNet for connectivity. It’s no substitute for building out your local RF links or at least independent internet links. It’s simply too unpredictable long term and a major SPF...
Starting with the EMRFD Fig 2.57 amplifier as a base, you can measure input returnloss using a return loss bridge. Return loss can be translated into VSWR and impedance. If the return loss is...
ere is a very clean way of assembling RCA plugs with RG-188 coax cable. These cables are used throughout with my version of the QST spectrum analyzer, which he built exclusively with “ugly” methods....
One of my favorite circuits uses a bipolar transistor with two forms of negative feedback. One is parallel feedback in the form of a resistance from the output collector back to the input base....
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