Following on from the last blog post that I made in July 2024, I present the progress I have made with the microphone preamplifier stages for the Irwell HF Transceivers modulator.
As per usual time has moved on and I have been sidetracked by other projects but with that said, the Irwell HF Transceiver project is and has always been a long-term project.
Since my last update, I have produced and developed various prototype circuits in a bid to get the modulator finished, some of which are illustrated below.
