Which statement about HF-IP is true?

• A. HF-IP allows simultaneous operation with HF voice.
• B. HF-IP provides data over the air using the HF antenna and cannot be used concurrently with HF voice.
• C. HF-IP uses satellite uplinks.
• D. HF-IP requires no setup.

Answer: (B)

HF-IP is a data mode that transmits IP packets over the HF radio link. When using this mode, the RF channel is dedicated to data traffic, and it isn’t designed to carry voice at the same time on the same link. That means you would switch the transceiver between data and voice modes or use separate equipment/frequencies to talk while data is not possible on the same channel.

So the statement that HF-IP provides data over the air using the HF antenna and cannot be used concurrently with HF voice is the accurate reflection of how this system operates. It isn’t about satellites, and it isn’t a no-setup operation—the data path requires configuration and parameters to establish IP communications.