In order to form DSB/CW modulation on TX, a SSBGEN board is used.
It consists of the following parts:
- Microphone preamplifier and TX audio amplifier – TL082
- Switched input: LINE IN or MIC (MUX 4053)
- DSB modulator – SA612
- CW drive level and form circuit – ½ of MCP4631 dual digi pot
- SSB drive level (mic level) – ½ of MCP4631 dual digi pot
