What attracts a lot of people to amateur radio is that it gives you the ability to make your own gear. Scratch-building hams usually start by making their own antennas, but eventually, the itch to ...
When we first spotted the article about a one-transistor amateur radio transceiver, we were sure it was a misprint. We’ve seen a lot of simple low-power receivers using a single transistor, and a fair ...
The UPA895TD twin transistor combines two NE851 NPN oscillator chips in a six-pin TD package measuring 1.2 mm x 0.8 mm. In essence, users can design two voltage-controlled oscillators (VCOs) with a ...
Alternatively, you may want to connect its inputs and output in parallel with IC1.C to increase its drive power to the transistor test circuit. IC1.A and IC1.B together with R2, R3 and C1 form an ...
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