Comment Yes, for amateur radio (Score 1) 283
I utilize my headphone and microphone jacks for AX.25 operations with a generic tnc modem or Slow Scan TV. Most of the equipment has not made the jump to USB based sound card for VHF and UHF amateur packet radio operations. Only the most expensive radios for V/U contain a USB digital audio interface. While most people would say "that's not important", these are the types of communication methods used in disaster or emergency situations to get information passed where the internet or pstn is otherwise unavailable.
73 de W4NTR