• Home
  • Blog
  • Thinking
  • Guides
Categories
All (3)
Broadcast FM (1)
Constellation Diagram (1)
Frequency Modulation (2)
IQ (2)
Narrowband FM (1)
Repeaters (1)
SDR (3)
Signal Processing (2)
Teaching (1)
Visualisation (2)

Thinking

Thinking

Here you will find material teaching theoretical concepts needed for amateur radio

Seeing an FM Repeater in IQ Space

SDR
IQ
Frequency Modulation
Narrowband FM
Repeaters
Signal Processing
Visualisation

Exploring narrowband FM repeater behaviour using IQ plots

Jan 6, 2026
7 min

Seeing Broadcast FM in IQ Space

SDR
IQ
Frequency Modulation
Broadcast FM
Signal Processing
Visualisation
Constellation Diagram

This post is the first in a short series exploring what different radio signals look like in IQ space. It begins with broadcast FM.

Jan 5, 2026
6 min
 

Why SDRs Are Great Teaching Tools

SDR
Teaching

Exploring how software-defined radios help in learning radio theory.

Dec 19, 2025
1 min
No matching items
We use Google Analytics to collect anonymous data on site usage. Learn more.
© 2025 Dr Ian Henry, G0LFT. All rights reserved.
Privacy Policy | Image Credits | About | Station | Contact | QRZ | YouTube
Main Hub