1927:Washington,
1929 trattato di Praga, distanza 9Kc 1931 Semmering, settembre 1932 Madrid, 1933
Lucerna ed Amsterdam revisione 1938. 10 luglio 1935 Ginevra. 1940
Montreux, 1947 Atlantic City.
La
riunione ebbe luogo al Semmering tra i delegati della federazione mondiale di
radiodiffusione, la discussione durò quasi due settimane tra 56 delegati 
di 15 stazioni europee esclusa la Russia. Alla fine il comunicato
ufficiale afferma di aver elaborato delle proposte per la revisione della
conferenza di Washington del 1927. Nei prossimi 3 mesi i delegati provvederanno
ad eseguire una serie di misure del campo delle elettro-onde creato dalle
principali stazioni in 15 stati europei tenendosi lontani dalle trasmittenti
relative.
Si
discute sugli intervalli tra stazioni e si pensa a 9 Kc/s per le stazioni
normali e 12 per le più potenti. Realizzando questo si ridurrebbe il numero
delle stazioni di 1/6.
Mussolini,
in un articolo che un tempo fece scalpore, ebbe a deplorare l'uso invalso in
questi ultimi anni d'indire conferenze internazionali, per discutere\e risolvere
problemi d'importanza generale. Tutte queste hanno manifestato impotenza e sono
fallite. Questa nuova mania, contagio del dopoguerra, che ha preso il nome di
conferenzite, ha infierito ed infierisce tutt'ora nel campo della
radiodiffusione con risultati effimeri o nulli.....la conferenzite è un male
terribile che sta distruggendo una cosa la cui  caratteristica essenziale
è la comunicazione collettiva internazionale. Le conferenze di Madrid,
Bruxelles, Lucerna ed Amsterdam tendono infatti a fare delle radiofonia un
servizio esclusivamente nazionale e fermare le radio-onde ai confini di ciascun
paese. 
La
conferenza di Madrid iniziata nel settembre 1932 tra i delegati della URI,(Unione
Radiofonica Internazionale) non ha dato risultati e si rimanda tutto a Lucerna
A
Lucerna non c’è grande accordo e si rimanda ad una conferenza da tenere ad
Amsterdam. Quest’ultima al 1 novembre 1933 ha dovuto interrompere i lavori.
 
 
sett
26             
                  febb27                                        gen 31         
gen 32       
1932 sett      
1933 marzo   
1933 luglio             
marzo 1940
                                                             
                                                                                                                                                                                
                    
ginevra?       
ginevra     
washington                                                                                                   lucerna                            montreux
                                                                            
                                                                                                     bolzano 
536  
                                                                                                                                                                                                                   
  bolzano   
543
                                                             
milano 546                           
palermo 554
                                                                                                                                                            palermo565 
                     
M.Ceneri 558
bologna 567
caltanisetta
s. remo
aosta
                                                                                       
 milano 598          al dic 32 
                                                                                        
milano 599                                                                                                                          
    
                                                                                        
bolzano 662       ( anche dic 32)                                                     
                                                                     
                                               palermo
571
                                                                                                                                                            
palermo 572
 
                                                                                                                
 firenze
598
                                                                                                              
     firenze 599                      
firenze 599
                                  
    
palermo 607                                                                          
                                                           
                                                                                                                          firenze 
610  
                                                                                                                                                                            
                                        
firenze I 616
napoli 657
firenze
torino
bolzano
venezia
                                        
roma 668
                                                              
roma 670
roma 680 roma 680 roma 680 roma 680
palermo
686                                                                                                                                                                                                                              
roma
705.8
       
             roma
710                                                                                                                                                 
roma  713  
                                                    
                                                                                                                                                                  roma
I   735
                                                 
                                         genova
788
                                                                                                                                                                                              
                    
  torino1 
798
                                                                                                                                                                                   
                                   
   genova
I
                                                                                                                                                                                    
                                       trieste 
firenze II 798
                                                                                                                         
                                                              milano 
814 
                                                                                                                 
bolzano 815 bolzano 815  bolzano
815
roma 846
                                                                                                                                                                                                                         milano 861
napoli
900                       
napoli 900
                                                                                           napoli
905     ( anche al dic32)
                                                        
                                                          milano
905   
milano 905    
milano 905
trapani 936
milano
937,5
                                                                                                                 napoli 941    
napoli 941       
napoli 941
                  
 
milano 950 
milano 950
                                                                                                                 
genova 959  genova 959  
genova 959
981 trieste
                                                                                                                                                                                                                                        
                
                                                                                                                                                            
genova  986
rimini 999
s. agata
taranto
                  
                                                                         torino
1013        al dic 32
venezia 1017
genova
                                                                                                                                                  
                                                                 bologna1
1033
                                                                                                                                          
                                                                                catania
                                                                                                                                        
                                                                            palermo
1033
altre 8
bari 1059
1062
                                                                                                                                                                                                                                                  
8 stazioni                                    
                                                                                          
torino 1094
             
                                                                                                   torino
1096    
torino 1096    
torino 1096
bologna 1098
genova
1100              
   genova 1100 
                                        
                                                                                                                                                                                napoli
1104
    
                            
                                                                                                        bari
1112
1116
6 stazioni
                                                                                                                         
                                                                                             
  bari I 1132                                                           
                                                                                                                                      
                                                                                                                        
                                                                      torino
1140
messina 1143
torino
1160
monte ceneri 1167
                                                                                                                                                                                                                                                      
S.remo 1188
                                                                                                                                                                       
                                                    tripoli
1195
venezia
1180                               
     venezia 1180
                                                                                        trieste
121        
trieste 1211  trieste 1211                                                                                   
                                                                                                                                                                           
                 trieste
1222                               
                                                                                                                                                                        
                                                  roma
1231
                                                                                                                                                                
                              roma
II 1258
                                                      
    
trieste 1300                                
                                                                                                
                                                                                                                      ancona,
1303
                                                                                     
                                                                                                                                            bari
II,
                                                                             
                                                                                                                                               genova
II, 
                                                                  
                                                                                                                                                             milano2
                                                          
                                                                                                                                                                      napoli
I
                                                 
                                                                                                                                                                              roma
III
                                         
                                                                                                                                                                                      torino
II,
                              
                                                                                                                                                                                     leningrado
1303
1314
4 stazioni
1332
4 stazioni
milanoII 1348
nel 1935
               
                                                                                                                                                                
   
 onda com it 1357   benevento 1357
                                                                                                                                                                                                                            Catanzaro
                                                                                                                                                                                                                             cosenza
                                                                                                                                                                                                                                padova 
                                                                                                                                                                                                                                s remo 
                                                                                                                                                                                                                         danzica
1357
                                                                                                                                                                                                                  
 com int per tre 
                                                                                                                                                                                                                
   stazioni it 1366
firenze III
1368
14 stazioni
                                                                                                                                                                                                                         cagliari
1402
                                                                                                                                                                                                                                  spezia
                                                                                                                                                                                                                                potenza
                                                                                                                                                                                                                                 taranto
                                                                                                                                                                                                                       norwich 
1402
                                                                                   
palermo 1410        al genn 31
foggia 1431
pesaro
                               
                                                                                                                                                                                    com
intern 1438
                
                                                                                                                                                                                                      milano
III  1438
                                                                                                                                                                                                                           
 napoli II
                                                                                                                                                                                                                       
 torino
III 1438
1449
23 stazioni LP
                                                                                                                                                                                                                      bologna
II 1537
                                                                                                                                                                                                                             venezia
                                                                                                                                                                                          
                             verona 
1537
genova 1575
altre 17 LP