Part 9 (1/2)

By J C HAWKHEAD and H M DOWSETT, MIEE Provides a complete theoretical course for the Postes 240 Diagrams and Illustrations Price 7S net (POSTAGE 6D)

MANUAL DE INSTRUCCIoN TeCNICA PARA OPERADORES DE TELEGRAFIA SIN HILOS

Por J C HAWKHEAD y H M DOWSETT, MIEE Precio: Espana, 10 pesetas; Franqueo, 1 peseta extra America Latina, 225, oro, neto; Franqueo, 25 cents extra (Great Britain, 9S; POSTAGE 6D)

THE ELEMENTARY PRINCIPLES OF WIRELESS TELEGRAPHY

By R D BANGAY In two Parts Price 3S each (POSTAGE 4D) Or in one Volume, price 7S net (POSTAGE 6D) Used by HM Government for instructional purposes

PRINCIPIOS ELEMENT ALES DE TELEGRAFIA SIN HILOS

Por R D BANGAY (Partes 1a y 2a en un Volumen) PRECIO: Espana, 10 pesetas; Franqueo, 1 peseta extra America Latina, 225, oro, neto; Franqueo, 25 cents extra (Great Britain, 9S; POSTAGE 6D)

PRINCIPES eLeMENTAIRES DE TeLeGRAPHIE SANS FIL

Par R D BANGAY (Great Britain, 9S; POSTAGE 6D)

MAGNETISM AND ELECTRICITY FOR HOME STUDY

By H E PENROSE Crown 8vo Over 500 pages Price 5S net, (POSTAGE 6D) Contains fifty complete lessons

THE CALCULATION AND MEASUREMENT OF INDUCTANCE AND CAPACITY

By W H NOTTAGE, BSc Invaluable to all engaged in Telegraph Engineering

Indispensable to the Wireless Engineer, Student and Experimenter Price 3S

6D net (POSTAGE 5D)

A SHORT COURSE IN ELEMENTARY MATHEMATICS AND THEIR APPLICATION TO WIRELESS TELEGRAPHY

By S J WILLIS To Students in Wireless Telegraphy, as well as those engaged in the practical application of this Science, this book should prove of real value Price 3S 6D net (POSTAGE 6D)

THE MARCONI OFFICIAL GRAMOPHONE RECORDS

For self-tuition in receiving Morse Signals Price 4S each, double-sided

(POSTAGE 9D) Set of Six Records, 24S post FREE

THE MAINTENANCE OF WIRELESS TELEGRAPH APPARATUS

By P W HARRIS An up-to-date Manual, full of practical hints and explanations Diagrams of all shi+p installations, from kw to 5 kw Price 2S 6D net (POSTAGE 4D)

DICTIONARY OF TECHNICAL TERMS USED IN WIRELESS TELEGRAPHY

By HAROLD WARD Vest Pocket Edition 2nd Edition, revised and enlarged

Contains over 1500 definitions Price 2S 6D net (POSTAGE 2D)

ARMATURE MODEL FOR 1 KW ROTARY CONVERTER

Shows every Winding of the Converter Armature from start to finish Price 1S net (POSTAGE 3D)

MORSE MADE EASY