48 Plain Roman or Arabic Numerals, same price, 16"' Size -Open Face. The "A-1" REGULATOR 16"' Strong Keyless Lever Watch Nickel Silver Case. Prudent buyers will find it particularly van - able where warranted trouble -free timekeeping and long-lasting trust. In its class it holds the pride of place, being built throughout in a.rict conformity with the bat traditions of our firm. 1 ' Sa EXPENSIVE CLOTHES l Distinctive of design which is both handsome and durable, this "A-1" Regu'ator has for long been favoured by the Indian public. Queensway, NEW DELHI.ģ THE INDIAN LISTENER N[t[As[ Te TN[ /Yr11/e M. 127 MAHATMA GANDHI ROAD, BOMBAY Haz ratgan j, LUCKNOW. It enables you to hold a conference with your colleagues without leaving your lesk With push-button selection, It Is se easy w use as your home!actin CHICAGO TELEPHONE & RADIO CO. LOUDSPEAKING TELEPHONES No mouth -plena or ear_plece Is used In these modern Loudspeaking Telephone* chat work off your ordinary electric current. Their clear, distinct tone, speed and sending ease have made them popular among beginners and professionals alike. WIRELESS SIGNAL PRACTICE SETS Chicago Telegraph iininstrumr,menta.,d Wireless Practice sets and keys are excellent for beginners, and for amateur and commercial work. E'ements are of cartridge type and are easily replaced at low cost. CYAN DELUX ELECTRIC SOLDERING IRONS FOR A FASTER AND BETTER JOB Three Irons are intended for interm ittent duty, they are excepu,'ua.u) efficient for light and medium work, with a minimum of repair and replacement expense. Ask for prices and particulars of the AVO range of precision electrical testing instruments. AVO TESTING INSTRUMENTS e' urn year:, of intensive research to the design and manufacture of elect, ical testing eerjipmcnt has grows: the range of world famous 'AVO" instruments. Thousands of Chicago Sound Trucks ale oow,n use al, over India and have proved their all -roans superiority in tone. or other police or civil Uelet,:e Services. ,j2,selltial and effective tredium of.r mmuu,cation with the public r.er w de areas, be it for traffic control, A.R.P. All over the wo: sound Trucks have been found to he the m. CHICAGO SOUND TRUCKS FOR PUBLIC SAFETY SERVICES Never before have Chicago Sound Trucks been more o'ciully employed than today. IP Transformers ad coils Condemrra of all kinds. and Utah transformen Resistences of all values a Pernuwe.r.r magnet and ~Ile addled Loudspeaker seal borne Dynarnoc wit-rophone American.Radio Tub. PRICE Rs QUALITY RADIO ACCESSORIES Amph,nol Radio Paro Amplifies, flatteries 1w as raro, nva meats Volume Control. Whatever your goal in radio here is your basic training. More than 000 photographs and diagrams make every point clear. from basic electrical principles through televasion. BEST RADIO TRAINING COURSE DIO Ph! YSICS COURSE,y.MtO A ^.Xt4AXc' This easy -to -read, easy -to -understand training course explains everything tep-by-step. Chicago Radio Microphones are precision engineered and give you long and faithful service. The frequency character - 'sties is extremely good over the whole audible range speech being crisp and dear without the hollowness u: ually as-,ociated with many types of microphones. NEW MOVING COIL DYNAMIC MICROPHONES Effective for all purposes both d outdoor. 15 tubes 110 to 220 volt cycle AC D'mensions: 19" one. Controls are: RF gain control, Band Twitch, Antenna trimmer, IF selectivity control and power switch, Volume control, Pitch control, Tone control, S -meter adjustment, AVC on -off,witz.h, Send -receive switch, phone jack, amplitude of frequency moduat, n switch. Acorn tubes in RF.ud converter system High gain 1852 tubes in Iron Core IF stages. This Freq.esney Modulation communications receiver covers 3 bands: 27 to 46 mc: 45 to 84 mc:81 to 145 mc Switch changing from FM to AM reception. 2 RADIO HEADQUARTERS OFFER THE FOLLOWING: - HALLICRAF iers COMMUNICATION RECEIVERS specilications.