Amateur Radio Contesting
Contesting -- also called radiosport -- is the competitive side of amateur radio. In a contest, operators attempt to make as many contacts as possible within a defined time period, exchanging specific information with each station. Contests sharpen your operating skills, push your station to its limits, and connect you with thousands of operators worldwide.
How Contests Work
Basic Structure
- Time period: Contests run for a fixed duration, typically 24 or 48 hours (though you may not be allowed to operate for the full time).
- Exchange: Each contact requires a specific exchange of information. This varies by contest but commonly includes a signal report and some identifying information (zone, state, serial number, etc.).
- Scoring: Your score is calculated based on the number of valid contacts (QSOs) multiplied by the number of unique multipliers (typically countries, states, zones, or other geographic entities).
- Categories: Operators compete in categories based on power level, number of operators, number of transmitters, band restrictions, and other factors.
The Contest Exchange
Every contest defines what information must be exchanged. Common exchange types:
| Contest | Exchange |
|---|---|
| CQ World Wide DX (SSB/CW) | Signal report + CQ zone number |
| ARRL Sweepstakes | Serial number, precedence, callsign, check, section |
| ARRL DX | US: signal report + state; DX: signal report + power |
| CQ WPX | Signal report + serial number |
| Field Day | Class + ARRL/RAC section |
Major Contests
CQ World Wide DX Contest (CQ WW)
- When: Last full weekend of October (SSB), last full weekend of November (CW)
- Duration: 48 hours
- Exchange: RS(T) + CQ zone number
- Multipliers: DXCC entities and CQ zones per band
- Why it matters: The largest amateur radio contest in the world. Propagation conditions, time zone strategy, and station capability all matter. It is common to work 100+ countries in a single weekend.
ARRL International DX Contest
- When: Third full weekend of February (CW), first full weekend of March (SSB)
- Duration: 48 hours
- Exchange: US/VE stations send RS(T) + state/province; DX stations send RS(T) + power
- Multipliers: DXCC entities (for US/VE) or US states and VE provinces (for DX)
CQ World Wide WPX Contest
- When: Last full weekend of March (SSB), last full weekend of May (CW)
- Duration: 48 hours
- Exchange: RS(T) + serial number
- Multipliers: Unique callsign prefixes (e.g., W1, VE3, JA6, etc.)
- Why it matters: The prefix multiplier system rewards working many different stations from many different call areas.
ARRL Sweepstakes
- When: First full weekend of November (CW), third full weekend of November (SSB)
- Duration: 24 hours (30 hours available, maximum 24 operating)
- Exchange: Serial number, precedence (A/B/U/M/Q/S), callsign, check (year first licensed), ARRL/RAC section
- Multipliers: 84 ARRL/RAC sections
- Why it matters: A North America-only contest focused on working all 84 sections. Achieving a "clean sweep" (all 84 sections) is a prestigious accomplishment.
ARRL Field Day
- When: Fourth full weekend of June
- Duration: 24 hours
- Exchange: Class (e.g., 3A) + ARRL/RAC section
- Why it matters: While technically not a contest (the ARRL calls it an "operating event"), Field Day is the largest amateur radio event in North America. Clubs set up portable stations, operate on emergency power, and combine competition with public outreach and emergency preparedness training.
Other Notable Contests
- IARU HF World Championship -- July; international team-based contest
- CQ 160m Contest -- January (CW), February (SSB); 160-meter specialists
- ARRL 10m Contest -- December; 10-meter band only
- WAE DX Contest -- European-focus DX contest with unique QTC (message traffic) feature
- Stew Perry Topband Challenge -- December; 160m distance-based scoring
- NA Sprint -- Short, high-speed contests for North American stations
Contest Categories
Power Categories
| Category | Typical Limit | Notes |
|---|---|---|
| QRP | 5 watts | Challenging; rewards efficient stations and skilled operators |
| Low Power | 100 watts | Most competitive category for home stations |
| High Power | 1500 watts (legal limit in US) | Requires significant station investment |
Operator Categories
- Single Operator (SO): One person does all operating and logging. Subcategories include Single-Op Assisted (using DX clusters) and Single-Op Unassisted.
- Multi-Operator (Multi): A team operates the station. Subcategories include Multi-Single (one transmitter), Multi-Two (two transmitters), and Multi-Multi (unlimited transmitters).
Band Categories
- All-Band: Operate on all available bands.
- Single-Band: Operate on only one band. Good for operators with limited antenna options.
Contesting Techniques
Rate and Multipliers
Your score in most contests is QSO points x Multipliers. This means both volume and variety matter.
- Running: Calling CQ on a clear frequency and working stations who respond. This is the primary method of accumulating QSOs quickly.
- Search and Pounce (S&P): Tuning across the band and calling stations who are running. Slower for QSO rate but good for finding multipliers.
- Strategy: Top contesters typically run on one band while periodically searching other bands for new multipliers.
Operating Speed
Efficient contest exchanges are fast. A skilled SSB contester completes a QSO in 20--30 seconds:
"CQ contest, W1ABC.""W2XYZ.""W2XYZ, 59 05." (Zone 5) "59 03." (Zone 3) "Thanks, W1ABC contest."
On CW, exchanges are even faster, often under 15 seconds per QSO.
Band Strategy
- Open the contest on the highest band that is still open at the start time (often 10m or 15m if conditions are favorable).
- Follow the propagation as bands close in the evening: move from higher bands to lower bands (20m, then 40m, then 80m, then 160m).
- Be on the right band at the right time. Knowing when each band opens and closes to different regions of the world is critical. This comes with experience and by studying propagation predictions.
Logging Software for Contests
Dedicated contest logging software is essential. The top programs include:
| Software | Platform | Cost |
|---|---|---|
| N1MM+ | Windows | Free |
| Win-Test | Windows | Paid |
| SkookumLogger | macOS | Free |
| TLF | Linux | Free |
These programs:
- Track your score in real-time
- Check for duplicate contacts
- Display rate meters
- Generate Cabrillo files for contest log submission
- Interface with your radio for automatic band/mode tracking
- Display multiplier maps showing what you still need
Getting Started in Contesting
- Pick a contest and listen. Before your first contest, tune through the bands during a major contest to hear the pace and style.
- Start with Search and Pounce. Running a frequency requires confidence and speed. S&P lets you work at your own pace.
- Enter in a low-pressure category. Single-op, low-power, single-band is a good starting point.
- Set modest goals. For your first CQ WW, aim for 100 contacts. You'll learn enormous amounts just by participating.
- Submit your log. Even if your score is small, submit it. Your log helps confirm other stations' contacts, and your score contributes to your section or country.
- Read the rules carefully. Every contest has specific rules about bands, modes, exchange format, and operating time. Violating the rules can result in disqualification.
- Have fun. Contesting can be intense, but remember it's a hobby. Take breaks, stay hydrated, and enjoy the experience.
Contributors
IUU6