RYA SRC VHF Channel Usage 6

Question 1

What is the significance of simplex vs duplex channels for recreational sailors?

Accepted Answer

Simplex channels use one frequency for both transmit/receive; duplex channels use separate frequencies for ship and shore

Answer

Simplex channels use the same frequency for both transmission and reception, meaning only one party can speak at a time. Duplex channels use paired frequencies so both parties can speak simultaneously, like a telephone.

Question 2

Which organisation assigns VHF channel designations internationally?

Accepted Answer

ITU (International Telecommunication Union)

Answer

The ITU (International Telecommunication Union) is responsible for allocating and regulating radio frequencies internationally, including the marine VHF band and channel designations used worldwide.

Question 3

What is the procedure for testing a VHF radio in UK waters?

Accepted Answer

Use a DSC test call to a coast station or conduct a radio check on Channel 67 with HM Coastguard

Answer

Radio tests in UK waters should use a DSC test call or contact HM Coastguard on Channel 67. Testing on Channel 16 with 'MAYDAY TEST' is not permitted. Never send a DSC distress alert for testing purposes.

Question 4

What is the phonetic alphabet word for the letter 'N'?

Accepted Answer

November

Answer

In the NATO phonetic alphabet used in marine radio, the letter N is represented by 'November'. This word is clearly distinguishable from other phonetic alphabet words in poor radio conditions.

Question 5

What channel is used for maritime safety broadcasts by HM Coastguard in the Solent area?

Accepted Answer

Channel 67

Answer

HM Coastguard uses Channel 67 as the primary working channel for Maritime Safety Information broadcasts in UK coastal waters including the Solent area, after making an announcement on Channel 16.

RYA SRC Practice Test

RYA SRC Practice Test

RYA SRC VHF Channel Usage 6