After nearly 30 years on the air, I still see (and occasionally make) the same operating mistakes. Before starting any transmission, spend a few minutes listening to ensure the frequency is clear. This prevents interference with ongoing communications and helps identify the right moment to join in.

Key points I've learned:

• Use your call sign legally and clearly at the start and end of your communications, as well as every ten minutes during a conversation, as required by regulations.
• Wait for your turn to speak, and refrain from interrupting ongoing conversations.
• Plain language is effective and inclusive, making communications clear to all, especially in emergency scenarios.

What other common mistakes do you see newcomers (and some old-timers) making?

Great list! I'd add that don't monopolize a frequency - allow others the opportunity to join in or use the frequency, especially during peak times or busy nets. Also, learn the proper use of Q-codes but don't overdo it on phone.

One thing I notice is new hams sometimes forget to pause between transmissions. It is important to use your call sign regularly during conversations and to wait for a pause before transmitting to prevent overlapping transmissions. Give the repeater time to reset!

Be courteous to new operators and offer help when appropriate. Remember, we all started somewhere; patience and encouragement go a long way. I try to gently correct mistakes I hear rather than jumping on someone for protocol errors.