Self-Paced Course — YAGI-UDA DIRECTIONAL ANTENNA
TM-ANT-073 — Open Handout TM-ANT-073 Estimated time: 2–3 hours (reading + practice + field lab) Handout: TM-ANT-073 (yagi_uda/tm.html) — keep it open throughout
What You Will Be Able to Do
TLO-1: Given the required materials and tools — construct the YAGI-UDA DIRECTIONAL ANTENNA per TM-ANT-073, tune it to resonance, and verify performance meets the SWR and resonance criteria stated in Chapter 7.
TLO-2: Given NanoVNA or SWR bridge measurements — interpret resonance and SWR data, apply the required calculations from Appendix A, and determine pass/fail against the stated acceptance criterion.
Scope
This manual covers design, construction, and calibration of the Yagi-Uda Directional Antenna directional antenna for operation on 6M (50–54 MHz), 2M (144–148 MHz), 70cm (430–440 MHz). The antenna provides significant forward gain and front-to-back re
What You Need
Handout
- TM-ANT-073 (YAGI-UDA DIRECTIONAL ANTENNA) — open alongside this course
Equipment (needed for Unit 4 and Unit 5 labs)
- Materials specified in Chapter 3
- NanoVNA or SWR bridge
- Calculator
Course Units
| Unit | Topic | TM Chapters | Est. Time |
|---|---|---|---|
| Unit 1 | Theory of Operation | Ch. 2 | 20 min |
| Unit 2 | Materials and Construction | Ch. 3 | 20 min |
| Unit 3 | Assembly Procedures | Ch. 4 | 25 min |
| Unit 4 | Calibration and Tuning | Ch. 5, Ch. 6, App. A | 45 min (lab) |
| Unit 5 | Verification and Field Testing | Ch. 7 | 30 min (lab) |
| Final Assessment | 15-question written test | All | 20 min |
How to Use This Course
- Work units in order.
- For each unit: read the assigned TM chapter first, then read the unit, then answer the self-check questions.
- Self-check answers are at the bottom of each unit — try before looking.
- The checkpoint at the end of each unit is a go/no-go.
- Complete the Unit 4 and Unit 5 labs with a real antenna before taking the final assessment.
- Passing score: 13/15 (87%). All calculation questions must be correct regardless of total score.