Stage 1 of 6
LEARN
The antenna is part of the radio system. A wire that fits one frequency is a different fraction of the wave at another frequency.
Labs · 06
Antennas & SWR
Frequency, wavelength, antenna length, resonance, SWR, and troubleshooting.
NOT STARTED
Lab workspace
Work through the six stages. Try the controls. Nothing here receives or transmits a real radio signal.
Stage 2 of 6
SEE IT
Forward energy goes toward the antenna. Reflected energy is what this model sends back when the match is poor. SWR is an indicator of that match, not a universal safe limit.
Stage 3 of 6
DO IT
Use the antenna bench. The length readout tells you if the wire is long, short, or near the size you selected.
Stage 4 of 6
EXPLAIN IT
Why might an antenna that works well at one frequency perform poorly at a very different frequency?
Stage 5 of 6
EXAM CONNECTION
RADIO LAB PRACTICE. These questions are about the antenna model you just used. They are not official exam questions.
Stage 6 of 6
FIELD TASK
You are preparing a portable 2-meter station near 146 MHz. No product names. Use the wavelength comparison and the placement sketch. Pick a wire and a place for it.