Back in October 2022, I posted details on the blog of a "High Performance AM, CW & SSB Modulator for the G6LBQ Irwell HF Transceiver" this module was somewhat experimental and, for me, a practical introduction to the MC1496 modulator IC. The module contained no microphone amplifier stages, as it was my intention to add these as a separate module at a later date.
To view my 2022 Modulator blog post article, click here.
In
this blog post, I get to grips with the microphone preamplifier and share some of my design methods and thought processes along the way. Note it is not my intention to provide a step-by-step guide to the design but more of an insight and reference.
The success of this module is crucial in order that I can continue the development of the final transmit stages and achieve finished project status.
