CO129-390 - Acting Governor Claud Severn - 1912 [5-6] — Page 249

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SPECIFICATION OF HAIN INSTALLATION.

MAST SYSTEM.

The Fast System to be designed for the safe support of a

Vultiple Fire Aerial of the *T* share suitable for all round working. The Marts to be six in number, each of the Seotional Steel Type made

of of 230 feet of steelsork with 2* feet of projecting wooden top-

maet, giving an overall height of 253 feet.

The Warts to be furnished with all necessary stan/ting and

running rigging to meet the various stressas coming on the System with a large margin of eafety, and to permit of the simplest method of handling the Aerial ftructure obtainable under the circumstances. §ll macsssary ironwork to be furnished to form, when essbodded in concrete blocks, Zoundations and snchorageu for the six Haste, but the concreting materiale for thie part of the work to be provided

et the cost of the Pur has078.

4 Drawing indicating the general arrangement of the East System with regard to the Poser Roure, and showing the geberoi lines of the

Aerial Structure and the lay cut of the Darth System is annexed

to this Specifier rion (Drawing Bo. SC08), together with Drawinge

illustrating the Tore of Beat to be employed.

AERIAL EYEZLI.

To comprise two Tranasitting Aerials and one Faceiving Anrial.

The Main Transaitting Asrial te be of dimenciona deɛigned for 2ndia-

ling most affioiently a wave length of 3,000 ketres and the Subsidiar;

Tramoni stâng Aerial for ube in conjunction wash the 3 KF, Traummit- ting Set to be designed for affording the boat transmission on a 800

39-re wave length. The Boonving dezial to be employed for the re-

contion of wave Jangthe over the hill range specified. Suitable De-

vices to be provided for on-ging the Cirwis of the Ruceiving norial

Ther transmitting, and et the stung tin: fer introducing into the

Earth Lend of the Transmitting Anrini for the Main Installation

**2m