RYA SRC VHF Radio Procedures 2

Question 1

What is the maximum permitted power output for a handheld VHF marine radio?

Accepted Answer

6 watts

Answer

Handheld VHF radios are typically limited to a maximum of 5-6 watts. Fixed VHF sets can transmit at up to 25 watts. Operators should always use the minimum power necessary.

Question 2

What is a 'working channel' in VHF radio communications?

Accepted Answer

A channel agreed upon by two stations to conduct their communications after initial contact on the calling channel

Answer

After making initial contact on Channel 16 (or another calling channel), stations agree to switch to a working channel — a designated frequency for their ongoing communication, keeping Channel 16 clear.

Question 3

What information must be included in a vessel's Ship Radio Licence?

Accepted Answer

The vessel name, call sign, MMSI number, and details of the radio equipment on board

Answer

A Ship Radio Licence (issued by Ofcom in the UK) includes the vessel name, call sign, MMSI (Maritime Mobile Service Identity) number, and details of all radio equipment fitted.

Question 4

What is the purpose of a 'radio check' and on which channel should it be conducted?

Accepted Answer

To verify that the radio is working correctly, typically conducted on a designated working channel or with a coast station — not on Channel 16

Answer

A radio check verifies that the set is working and transmissions are being received clearly. It should be conducted on a working channel or with a coast station, NOT on Channel 16 (except in areas where this is permitted).

Question 5

What is the readability scale used when responding to a radio check?

Accepted Answer

A scale from 1 to 5, where 1 is unreadable and 5 is perfectly readable

Answer

The readability scale runs from 1 (unreadable) to 5 (perfectly readable). A typical response might be 'Your signal is strength 5, loud and clear.'

RYA SRC Practice Test

RYA SRC Practice Test

RYA SRC VHF Radio Procedures 2