73·STUDY

Technician exam question T8C06

Subelement T8, SIGNALS AND EMISSIONS· Group T8C

T8C06

How is over the air access to Internet Radio Linking Project (IRLP) nodes accomplished?

  • A.By obtaining a password that is sent via voice to the node
  • B.By using Dual-Tone Multi-Frequency (DTMF) signals (correct answer)
  • C.By entering the proper internet password
  • D.By using Continuous Tone-Coded Squelch System (CTCSS) tone codes

WhyOver-the-air access to Internet Radio Linking Project (IRLP) nodes is accomplished using Dual-Tone Multi-Frequency (DTMF) signals. IRLP nodes are accessed over the air by sending DTMF (touch-tone) digits from a transceiver's keypad, which the node interprets as commands to connect to a particular reflector or another node, answer B. A voice password (A), an internet-entered password (C), and CTCSS tones (D, which are used for squelch access, not command signaling) don't describe how IRLP command access actually works.

Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.

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