The building blocks are coming together.
- Low pass transmit filter (a)
- Antenna changeover relay (a)
- Receiver front end filter (a)
- receiver detection, AF filter, AGC and PA (b)
- Microphone amplifier and SSB Modulator (c)
- low level transmit amplifier (d)
- Power Amplifier (e)
- Synthesizer with LCD display - built and to be tested (f)
Analysis based on the inductors I had to hand suggested my receiver band pass filter may require changing. To facilitate that I decided to incorporate the three building blocks marked (a) onto one PCB. I will make the filters on a daughter board then fix that to the base board.
Rough layout and progress can be seen below.
73's
Richard
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