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New Zealand Gazette – 1989 – No. 209

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✨ Radiotelephone and Radiotelegraph Regulations

NEW ZEALAND GAZETTE

No. 209

NINTH SCHEDULE

SCHEDULE

FORM OF RADIOTELEPHONE LOG BOOK

Radiotelephone Log

Name of Ship	Official Number	Port of Registry	Gross Tonnage

		Radiation Length (L) (Dimension of Aerial) (L)	pF per Metre
		25	15-4
		30	14-9
		50	12-9
		70	11-9
		100	11-1
		200	9-8
		300	9-2
		400	8-10
		600	8-2
		800	7-8
		1,500	7-2
		3,000	6-6
		10,000	6-0

Name of company operating the radio service...

Period covered by log: From... to...

Delivered to the Superintendent of the Mercantile Marine Office at the Port of... on the... day of... 19...

Countersigned:
...
Superintendent.
...
Master.
...
Address.

SECTION A—PARTICULARS OF RADIOTELEPHONE OPERATORS

Name	Home Address	Certificate Number and Class

S.S...
M.V...

SECTION B—DIARY OF THE RADIOTELEPHONE SERVICE

Date and Time	Station From	Section To	Frequency Used	Record of Working

TENTH SCHEDULE

Range of Radiotelegraph Transmitters

For the purposes of this Schedule, the normal range of a radio telegraph transmitter, when determined by calculation on a frequency of 500 kHz, shall be calculated in the manner specified in clause 2 or clause 3 of this Schedule.
(1) In the case of all types of transmitting aerials except “L” and “T” types, by ascertaining the product of (I₁) the effective radiation current in amperes and (H₁) the effective height in metres of the aerial. The effective radiation current (I₁) is obtained by multiplying the root mean square (RMS) current in amperes fed into the aerial system by a factor Cᵢ/Cₜ which is determined by the ratio of the radiation capacitance (Cᵢ) to the total measured capacitance (Cₜ).

(2) The radiation capacitance (Cᵢ) is obtained from the radiation length (Lᵣ) in conjunction with the table given in subclause (4) of this clause.

(3) The radiation length is as follows:

(a) Single vertical aerial without capacitive loading—Radiation length (Lᵣ) = measured length of aerial in metres.

(b) Single vertical aerial with top capacitive loading—Radiation length (Lᵣ) = measured length of aerial + two times the diameter of loading structure, in metres.

(4) The radiation capacitance (Cᵢ) is now obtained by the product of the radiation length (Lᵣ) and the capacitance per unit length as given in the following table:

Product in Metre-amperes	Equivalent in Miles
95	175
74	150
56	140
42	100
21	75
15	60
5	25

(5) The radiation capacitance of N similar vertical aerials joined in parallel shall be taken to be N times the radiation capacitance of one, provided the spacing between them is greater than 1/4 λ.

(6) The total capacitance (Cₜ) of the aerial shall be obtained by measurement using a capacitance bridge of approved design.

(7) The ratio Cᵢ/Cₜ may now be obtained, and this, when multiplied by the measured RMS current in amperes fed into the aerial system, gives the effective radiation current (I₁).

(8) The effective height of the aerial (H₁) shall be obtained by measurement of the vertical distance from the load line mark indicating the greatest depth to which the ship may at any time or place be submerged in accordance with the Load Line Rules 1970, or, if there is no such mark on the ship, from the mean level of the surface of the water in which the ship is afloat, to the base of the aerial, plus half the radiation length (Lᵣ) of the aerial or its physical height, whichever is the smaller.

(9) The product (I₁H₁) so ascertained in metre-amperes shall be converted to miles in accordance with the following table:

Product in Metre-amperes	Equivalent in Miles
56	175
44	150
33	140
21	100
15	75
10	60
5	25

In the case of transmitting aerials of the “L” and “T” types, by ascertaining the product of the root mean-square current in amperes at the base of the main aerial and the maximum height in metres of the aerial measured from the load line mark indicating the greatest depth to which the ship may at any time or place be submerged in accordance with the Load Line Rules 1970, or, if there is no such mark on the ship, from the mean level of the surface of the water in which the ship is afloat. The product so ascertained in metre amperes shall be converted to miles in accordance with the following table:

Product in Metre-amperes	Equivalent in Miles
102	175
76	150
45	100
30	75
20	60
10	25

ELEVENTH SCHEDULE

Basic Principles and Operational Guidelines Relating to Safety Radio Watchkeeping and Maintenance for Radio Officers on STCW Convention Ships

General

Basic guidelines—(1) The master of every STCW Convention ship should ensure that—

(a) The radio watch is maintained in accordance with these performance standards; and

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VUW Te Waharoa — NZ Gazette 1989, No 209

NZLII — NZ Gazette 1989, No 209

The Executive Wing of Parliament (depicted) is universally known as The Beehive. It was completed in 1977 and remains the primary office for the elected Government of the day.

✨ LLM interpretation of page content

🚂 Form of Radiotelephone Log Book (continued from previous page)

Domain🚂 Transport & Communications
KeywordsRadiotelephone Log, Log Book, Radio Service, Voyage, Mercantile Marine Office, Radio Staff, Ship Details, Call Signs, Distress Signals

🚂 Range of Radiotelegraph Transmitters

Domain🚂 Transport & Communications
KeywordsRadiotelegraph Transmitters, Range Calculation, Aerial Types, Radiation Current, Effective Height, Frequency, Load Line Rules

🚂 Basic Principles and Operational Guidelines Relating to Safety Radio Watchkeeping

Domain🚂 Transport & Communications
KeywordsSafety Radio Watchkeeping, STCW Convention, Operational Guidelines, Radio Officers, Maintenance, Performance Standards

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