The Birmingham age-herald., 1922-09-17
BRITISH REPORT URGES USE OF
 BROADCASTING
Committee PessimiStiC Over Radio Telephone Public Communication Service
 More Than 100 Miles

Tho subcommittee which was ap- pointed by the British radio research board to investigate the possibilities of wireless telephony AS a means of public communication service has rem dered its report. The findings gre passimistio regarding the use of ra- dio for this purpose. but urge 1t for broadcasting purposes.
 The committee was headed by Ad- miral Sir Henry R. Jackson, one of the most famous figures in wireless development. and one of the original inventors. The committees made thorough investigation from the time 1t was appointed, one year ago, espe- oially with regard to developments made by the three fighting services of the British government
 The report in part reads as fol- lows:
 "The sub b-commlttee, dealing with radio telephony over short distances, reports that 1t has learned that the Marconi company in this country Is experimenting with semi secret sys- tems with the expectation of placing l radio-telephony on commercial basis in the near future for dis- tances up to about 200 miles over sea. The representatives of the Mar coni company have kindly furnished l us with a complete description of | the installation intended for such q | service between this country and | the continent, using short wave lengths of the order of 100 meters and a power of k.-w. This com pany has informed us also of the very promising results of certain ex- | periments carried out by their ex- perts at a range of 90 miles over land, using wave lengths of the order | of 20 meters. Although this latter line of development appears promis- | Ing, 1t must be recognized that the system proposed Is only in the ex- perimental stage. Neither of the systems has yet been tested in an ac- | tual service"
 Findings of the Committee
 The conclusions arrived at by the | sub committee are as follows:
 "(a) We consider that the de- velopment of radio-telephony for long ranges ia in an extremely elementary stage. and we see no line of develop ment which would be likely to lead to its establishment on a commercial basis within measurable period.
 "(b) For ranges of the order Of 1000 miles we consider that in certain remote localities, where the interfer- ence from atmospherics and other radio communications Is not excess i've, 1t would be possible to establish Eon-secret radio-tclephonic services using waves of the length usually employed by medium power radio telegraph stations communicating over the same range. The power necessary for telephony, how ever, would be much greater than | igfa ofa munication by radio telegraphy over the same distance.
 "(c) For ranges of the order of 200 miles we consider the position more hopeful, and it seems that the lines of experiment which are being followed will lead to the develop ment in reasonable time of sys- tenn of radio-telephony which will approach, approximately at any rate, to the requirements of commercial system.
 Recommends BroadcastinE
 "(d) We cannot, however, recom- mend the use of radio telephony as substitute for any other means of telegraphic communication. except in those cases where the special re- quirements can be met in no other economic way; for example. the broadcasting of intelligence or gen l cTdl iHlOTtudiOHt WHefe one costly transmitting station supplies a great number of simple, inexpensive re- ceiving stations. seems a practical commercial problem, especially in To- calities ill-equipped with land lines" The subcommittee goes on to state that "as regards the future work of the subcommittee we can, if desired. examine moro fully the DO sition of radio-telephony abroad. We desire to state. however. that from the general study which we have made of the information published in the technical press we hardly expect to find that the development of radio telephony in foreign countries has beon carried much, If any, further than in this country. We can. if de- sired. recommend to the radio re- search board a program of investiga- ton which could be undertaken with a view to the improvement and de- velopment of this means of com munication."
 The report is signed by the four members of the b-committee--Ad- miral Sir Henry B. Jackson (chair- man). Prof. c. l.. Fortesque, Prof. G. W. O. Howe and Maj. A. G. Lee. l 1roas hefp0 rrnad oo1y vVtth apaars