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Troubleshooting

Most beginner problems are settings, not broken gear. Work through the symptom that matches.

"I can't hit the repeater"

The repeater doesn't answer — no courtesy beep, no retransmission of your audio.

  1. Wrong tone (most common). Verify the repeater's CTCSS tone from a current directory and check your radio is transmitting it (tone mode "T" or "TONE," not just tone squelch on receive). One wrong digit = total silence.
  2. Wrong offset direction. Confirm plus/minus for the repeater and that your radio applied it. A few repeaters use non-standard offsets — the directory says so when they do.
  3. Out of range. 5 watts into a rubber-duck antenna from inside a building is the weakest possible configuration. Step outside, or try from higher ground or a car with an external antenna, before concluding anything.
  4. Repeater down. Repeaters go offline for maintenance. Check the club's website or ask on another repeater.

"Nobody answers my call"

  1. Dead repeater, wrong time. Some repeaters are quiet for hours. Try during commute times or a scheduled net.
  2. You're not actually transmitting. See below.
  3. They can't understand you. On simplex or HF, switch to full phonetics and speak slowly across the mic (not into it — a fist's width away, steady pace).
  4. Wrong frequency/mode. Double-check you dialed what you think you dialed — 146.520 vs. 146.025 is an easy slip.

"Am I even transmitting?"

  1. Watch the radio's transmit indicator (usually a red LED or icon) when you key up.
  2. Listen on a second receiver if you have one (even a cheap scanner): key up on simplex and confirm you hear yourself.
  3. Ask for a signal report on a net: "KI5ABC, can I get a signal check?" Someone will tell you how you sound.
  4. Check the battery. A nearly-dead battery can light the display but collapse under transmit current.

"High SWR" (see Antennas)

  1. Check every connection. Loose or corroded coax connectors are the #1 cause. Disconnect, inspect, reseat.
  2. Right antenna, right band? Transmitting on 70 cm through a 2 m-only antenna gives terrible SWR. Verify the antenna covers the frequency you're on.
  3. Something changed near the antenna. New metal gutter, a fallen branch touching the wire, the antenna moved — surroundings matter.
  4. Feedline damage. Kinked, chewed, or waterlogged coax misbehaves. If SWR is bad on all bands, suspect the feedline.
  5. Measure at low power. Don't troubleshoot SWR at full power — if something is wrong, low power limits the damage.

"I hear the repeater but it sounds distorted / I hear interference"

  1. Budget handheld receivers overload near strong transmitters (broadcast towers, pagers). If a better radio at the same spot hears fine, your receiver is the limit, not the repeater.
  2. Try the repeater's input frequency on simplex — if you hear someone there, you're hearing another user direct, which is normal.

General method

Change one thing at a time, and keep notes: what you changed, what the SWR/signal was before and after. Radio problems are almost always one variable, and notes turn a mystery into a ten-minute fix. When stuck, describe the symptom precisely ("SWR 3:1 on 2 m, was 1.3:1 yesterday, nothing moved") on a club forum or net — precise symptoms get precise answers.

Check: After any fix, re-verify the baseline: SWR reading, a successful repeater contact, a signal report. "It works" is a measurement, not a feeling.

Next: Glossary — every term in one place.