The Birmingham age-herald., 1923-04-02
RADIO RULES WILL bE PUT IN EFFECT BY HOOVER 0FF|CE
Changes to Be Made Gradual " to Give Stations Time
 to Change

WASHINGTON. April 1.--Recom- mendatons of the recent national ra- dio conference fer re-allocations of ether wave lengths as means of reducing interference will be ac- cepted with certain slight modified tions by the commerce department, Secretary Hoover announced today but will be put into effect gradually.
 Broadca sting stations will be given time to adjust equipment to their wave length assignment and no sta tion will be forced to cease use Of the present 360-meter band. The conference concluded it's sessions 10 days ago and it's report has been in the hands of Mr. Hoover since.
 The recommendations by the radio conference represent a step in ideal development of measures for the pre- vention Cf interference in public broadcasting," MT. Hoover's state- ment declared.
 The report recommends making available all wave lengths from 222 to 545 meters for public broadcasting. the various possible bands to be as- signed to different stations so as not only to reduce direct interference but alse to build up Zonal regions of distribution.
 Fnce Difficulties.
 The department fully accepts the recommendations of the conference, but there are number of difficult ties in placing the plan abruptly into action: First, the hardship that it may cause to various stations to move arbitrarily to new wave lengths second the difficulties intro duced by the ship to short ctmmu- nicatton which are now working to some extent on 300 metres and also on b40 meters.
 'The conference recommended that the ultimate development for ship communication be to assign for the general purpose Cf shipping the whole wave area from GOO to 500 me ters.
 Tn order to make progress in this direction of developing the area from 500 to 500 for ship communication, 1t is proposed that all ships and all shore stations used fer ship commu- nications shall cease using 456 meters between and II D. m, but may use 700 meters at any time. The 800 me- ters wave length now assigned un- der the international convention is very little used and will be used for Inland broadcasting.
 For internal broadcasting the de- partment proposes to cooperate with the various stations with view to developing systematic assignment of wave lengths to the various sta tions within the broad confines of the recommendations of the conference. In order to carry this out without hardship, the following classifica- tion Of stations will be made:
 Will Classify stations.
 Glass A Stations-That is, stations equipped to use power not exceeding 300 watts. In this class it is pro- posed that the radio inspectors, in CO., operation with the station owners, shall assign distinctive wave lengths to each station so far as Is possible in the area from 222 to 300 meters. No station will be required to change from 360 unless 1t so de- sires.
 Glass B Stations-That is. stations equipped to use from 800 to 1000 watts. In this class it is proposed to similarly offer to license these sta- tions on special wave length from 800 to 345 and from 375 to 545 me- ters, having regard to the mainten- ance of ship work on 450 meters as outlined above and again no station will be required to change from 360. unless it so desires.
 Glass C Stations-Comprising o0 stations now licensed for 360 metef4 In this class no new licenses will be issued for stations Cn 360 meters un- til the plan is entirely realized. Sta tions which do not wish to move un- der the general plan may remain at 360 meters, but they necessarily will be subject to some interference at best. It is thought that by the above plan the stations can be gradually brought into accord without hard ships.
 O O o
 Amateurs Sphere.
 Under the plan amateurs are given the whole area from 150 to 220, instead of being fixed upon 200 with special licenses at S75. The special licenses hitherto issued for amateurs at 375 will now be issued at 220. Certain special cases will be taken care of otherwise. It is proposed in cooperation with the amateur asso- citation to develop an assignment of wave bands in classifications so as to somewhat reliev the present in- terference among amateurs. It will be remembered that the number of wave bands can be used among the short wave area assigned to amateurs is greater in proportion than among the longer wave lengths, and these arrangements expand the area hith- erto assigned tC amateurs