col : callsign | area served | frequency | band | fate | freq currently | purpose row 1 : 7cae | hobart | 92.1 | fm | changed call to 7the ca. 1980 | 7the | community row 2 : 7dy | derby | nan | am | moved to scottsdale and changed call to 7sd in 1954 | 7sd | commercial row 3 : 7ex | launceston | 1008.0 | am | moved to fm in 2008 as 7exx | silent | commercial row 4 : 7ho | hobart | 864.0 | am | moved to fm in 1990 as 7hho | 7rph | commercial row 5 : 7ht | hobart | 1080.0 | am | moved to fm in 1998 as 7xxx | 7tab (hpon) | commercial row 6 : 7la | launceston | 1098.0 | am | moved to fm in 2008 as 7laa | silent | commercial row 7 : 7nt | launceston | 711.0 | am | moved to fm in 2006, retained call | silent | national row 8 : 7qn | queenstown | 630.0 | am | moved to fm in 1991, retained call | 7rn | national row 9 : 7qt | queenstown | 837.0 | am | changed call to 7xs in 1988 | 7xs | commercial row 10 : 7uv | ulverstone | nan | am | moved to devonport and changed call to 7ad in 1940 | 7ad | commercial row 11 : 7zl | hobart | 603.0 | am | changed call to 7rn in 1991 | 7rn | national
which stations don't have a frequency? whoch one is not derby?
ulverstone
Callsign Area served Frequency Band Fate Freq currently Purpose
whoch one is not derby?
7CAE Hobart 92.1 FM Changed call to 7THE ca. 1980 7THE Community
7DY Derby nan AM Moved to Scottsdale and changed call to 7SD in 1954 7SD Commercial
7EX Launceston 1008.0 AM Moved to FM in 2008 as 7EXX silent Commercial
7HO Hobart 864.0 AM Moved to FM in 1990 as 7HHO 7RPH Commercial
7HT Hobart 1080.0 AM Moved to FM in 1998 as 7XXX 7TAB (HPON) Commercial
7LA Launceston 1098.0 AM Moved to FM in 2008 as 7LAA silent Commercial
7NT Launceston 711.0 AM Moved to FM in 2006, retained call silent National
7QN Queenstown 630.0 AM Moved to FM in 1991, retained call 7RN National
7QT Queenstown 837.0 AM Changed call to 7XS in 1988 7XS Commercial
7UV Ulverstone nan AM Moved to Devonport and changed call to 7AD in 1940 7AD Commercial
7ZL Hobart 603.0 AM Changed call to 7RN in 1991 7RN National
Ulverstone
whoch one is not derby? || which stations don't have a frequency?