CRAC Class C (2025) — Questions 41–50

A Class A station may operate across the 30–3000 MHz range (i.e., VHF and UHF only) with a maximum transmit power not exceeding 25 W (A). Class A does not include HF (below 30 MHz), and the power cap is 25 W, not 15 W.

A Class B certificate holder may apply for bands below 30 MHz (HF) at less than 15 W, or bands above 30 MHz (VHF/UHF) at not exceeding 25 W (A). Note that the 100 W HF limit belongs to legacy "grandfathered" B holders (see U0068), not the current Class B certificate scope.

A Class C certificate holder may apply for bands below 30 MHz (HF) at up to 1000 W, or bands above 30 MHz (VHF/UHF) at up to 25 W (A). The 1000 W HF ceiling is the highest of the three classes; the VHF/UHF cap stays 25 W as for other classes.

To sit the Class A verification you must be familiar with the radio management regulations (A) and possess a basic operating- technical capability (B). There is no minimum age of 18 or 16 — minors may also participate, so C and D are wrong.

To sit the Class B verification you must have lawfully held a station license for over 6 months (A) and have practical operating experience (B). Like Class A, there is no fixed age requirement of 18 or 16, so C and D are distractors.

To sit the Class C verification you need a station license that records bands below 30 MHz (HF) held for more than 18 months (A) plus practical operating experience (B). The 6-month and 12-month figures are too short, so C and D are wrong.

Class A permits VHF-band (A) and UHF-band (B) stations up to 25 W. Class A does not grant any HF (below 30 MHz) operating privilege, so neither C nor D is available to a Class A holder.

A current Class B certificate permits VHF up to 25 W (A), UHF up to 25 W (B), and HF/LF below 30 MHz at less than 15 W (C, D — "LF" below 30 MHz is covered by the "bands below 30 MHz" privilege). All four are within the Class B scope, so A, B, C, D are all correct.

Class C permits VHF ≤25 W (A), UHF ≤25 W (B), HF up to 1000 W (C), and — where genuinely needed for special technical testing or QSO events — a VHF station above 25 W under approval (D). All four are valid Class C privileges, so A–D are correct.

Exceeding the licensed power limit for special tests/QSOs requires the licensing authority's approval (A), and only a Class C certificate holder with a license may be approved for such temporary, limited operation (B). Class B (C) and Class A (D) holders are not eligible for this special privilege, so they are incorrect.