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^51*11 30, 1932
50 CTOtS Sf Am'iTIt Umn
0oiaR)la9lon thl« ir*e*r r«X««»e'' a »tn6*i8«nfc on the present etnto* of broadoast etotlone In rerpeot to efforts hein.^ h«m1« to eowply with th^e re^xlatlon requiring 60 cycle traneoltter jBalnt«ni«Bioe June 335d.
'?he etj^tenjent followB In frill texts
•?he f'edeml %tdlo Coanalsslon Is raich ^^rntlflsd to report that epproxliaately two-thirds of th® broedcaust atstions nosr bare Installed frequency ooatrol «®nt that has the oanahility of raaintainini^ th® operating freqjtenoy within 60 cyoles of the Designed freqircnoy as required ^X© X44 whliSi hecoaes effective June 22, 1932. In eonjrmotaon with this eqalpraent, an approved frt^ency suonitor BRiet be employed.
♦•Three frequency awnltors hnv® been approved to date and othere are nc3W being tested at the Baresai of Stnndnrds. All stations mist have in operation by June 22, 1932, an approvei laonltor to he operated in conjunistlon with the trans¬ mitter 80 as to dstsrmlne that the station le onerstlng within the rigid frequency deviation toleranoe speolflsd, '?he monitors are (snsldered aecossa^ry to maintain the <!l ose frequency requlri^nts anc! ar® required 1^ l5ile 145.
•binder the present rulfca, broadcast stations are reqtalred to maintain their operating frequency within only 50C cycles of the asslgh^'® freq^nmoy. Such opera¬ tion subjects duplicated channel stations to severe mit^ial Interference in the form of Whistles and heterodynes. 7tm new mile isntii^ly slimlnstBS these whistles and heterodjries. thereby increasing the sisrvic® ar>--a of all stations that are now thus so limited In eervlos.
•*It is Uie hops and expectation of the :>»mmlssion that wiisn th* new rule goes into effect ail st«:tl'>TUi will be squin'‘«d with frequency control an-^ frequency monitorn so as to observe the new rigid frfc; quency deviation tolsi^usce.
••it is tfif« intention of the CfsiiKlsslon to en.f''rce rigidly ths new rule and no St tlo««i will b« allowed to ©p®r«ttw isdii-sh cannot laaet the r«.,p.ilrci5«nts. ^o exes t ions will be granted In this regard for any e«us«» Wbat soever, v^ilus of
the Improvement, both to the broaticaatsrs and the llstenems, d©'«nds upon strict SosDllnnce. The failure of Coe station on a channel to asiintain th«» tolerance limits mi/ destroy the advantages to aevr?ml other stations which Bialataln the required accuracar.
•■Tie chief Imeflciaries of the new rule will be those listeners located fairly close to a station but now unable to receive it satisfactorily due to inter¬ ference frost other statlorut on the channel. the new mile this interference will be mt-rially reduced and thereby the stations will serve l^rrg*r areas. ^1 stations tmt are now stifferlng from heterodyne lnterf©rs?ioe will have their service areas increased. It is estlmted that this Increas® in service ar a will be fr>o 2i> to 100 er cent for all duplicated ebj^mel stations now differing heterodyne interference. ■