An experimental HF 6-band SSB transceiver – Part 5: Analog Affairs – Getting Measurement Data

This short article will describe the adapter board that is connected to analog data sources and that is converting the respective voltage data into suitable voltage levels for the ADC inputs PA0:PA4 at the microcontroller:

DK7IH 6 band QRP SSB TRX 2019 - Analog Adaptor Board
DK7IH 6 band QRP SSB TRX 2019 – Analog Adapter Board

The following data will be converted and later shown on the display:

  • User keys (Key1:Key3)
  • TX power measurement
  • PA temperature (Sensor: KTY81-210 switched against GND)
  • Battery/Supply voltage
  • AGC output (DC) from receiver => S-Meter

This article covers the remaining digital (or “analog to digital”) stuff, next on the agenda will be the receiver.

Vy 73 de Peter

Author: Peter (DK7IH)

Radioamateur since 1987, constructor of radio hardware, software developer, science teacher in secondary education.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.