Mobile Wireless Stations
Page 71
If you've noticed an error in this article please click here to report it so we can fix it.
ATRIO of interesting vehicles has recently been commissioned for a
special formof service in Egypt. In reality the machines are mobile wireless stations and they comprise MorrisCommercial 20-cwt. six-wheeled chassis carrying specially constructed bodies in which up-to-date wireless equipment, supplied by Marconi's Wireless Telegraph Co., Ltd., is installed. The vehicles will be used in areas which are not supplied by the land telegraph and telephone system, so that practically any point in a wide range of country on each, side of the River Nile can be linked up& with the main telegraph system.
The Egyptian State Telegraph Department decided upon the use of sixwheelers so That the mobility of the outfits is not affected, whether the machines be required to operate on bard or soft desert land.
• Each vehicle carries a medium-wave j-kilowatt telegraph transmitter and a small portable short-wave transmitter of 100 watts power. The aerial is suspended from 70-ft. masts, which are made in sections normally carried on the roof of the body. The wave-lengths employed are between 600 metres and 2,150 metres on the medium-wave set and from 20 metres to 50 metres on the short-wave set. In one of the accompanying illustrations showing a rear view the power-generating unit is to be seen. It can be removed from the interior by sliding along a runway and,
after use, can be re-housed by employing the winch gearing which forms part of the equipment.
The body of each vehicle has been specially constructed so that it can work under high temperatures, double sides and roof sections of teak being used, the intervening spaces serving to help in keeping the interior cool.
Egypt is a country in which, apart from the Delta, the towns and cities with their connecting railway and telegraph communications lie along a narrow strip of land bordering the Nile, with large areas of sparsely inhabited and desert country on each side. In these circumstances the mobile wireless stations should prove of particular value in. providing special extensions of the existing telegraph facilities, either as a regular service or in times of emergency,