How to Call CQ on the Phone Modes

The Art of Calling CQ: Preparation, SSB Rules, and Operating Etiquette

The golden rule of amateur radio is simple: „Always listen first!“ Thorough prep and strict bandplan compliance ensure you avoid causing interference (QRM) to existing contacts while maintaining technical accuracy.

1. Pre-Transmission Steps and Frequency Checking

Before keying your microphone, follow these essential procedural steps:

1. Select the Right Band: Choose an appropriate band based on distance and current ionospheric propagation (consult MUF charts).
2. Check the Bandplan: Confirm that your target frequency is allocated for phone (SSB) operation.
3. Sideband Standard (LSB vs. USB):
   • Below 10 MHz, Lower Sideband (LSB) is standard.
   • Above 10 MHz, Upper Sideband (USB) is standard.
4. Band Edges and Bandwidth: An SSB signal requires at least 3 kHz bandwidth. LSB extends 3 kHz below the suppressed carrier frequency, while USB extends 3 kHz above.
   Critical Band Edges: Never transmit LSB below 3603 kHz (or 1853 kHz on 160m) to avoid out-of-band emissions. Never transmit USB above 14347 kHz.
5. Check Frequency Occupancy: Even on a seemingly clear frequency, always inquire: "Is this frequency in use?". Stations in a skip zone may be in an active contact. If unheard, ask a second time before transmitting.

2. Calling CQ Efficiently

A CQ call should be concise, rhythmic, and clear. Always use standard IARU phonetics when pronouncing your callsign.

Common CQ Errors to Avoid:

• Do NOT end with „Over“: „Over“ means „over to you“, but you have not established contact with anyone yet.
• Do NOT end with „QRZ“: „QRZ“ means „Who is calling me?“. Nobody was calling prior to initiating your CQ.

3. Special Operations: Split Working and VHF/UHF Repeaters