history of the Metropolitan Fire brigade Medium Wave Radio
system Melbourne Victoria Australia - By Lionel VK3NM/VK6DC
was the callsign used by the Metropolitan Fire Brigade dispatching
fire trucks to
jobs on approx 1620 Khz at the top end of the AM broadcast band with replies
fire trucks back to base on about 83 Mhz FM.
station operated with a power output of about 1000 watts into a loaded
" T " vertical
a ground plane on top of the Eastern Hill fire station just east of Melbourne
wave ground plane was mounted on one of the poles for reception of replies
83 Mhz from the fire trucks.
carrier with some power supply hum was transmitted continuously 24 hours
a day with
beep every 30 seconds and sometimes when you hear the base operator giving
you could hear the fire truck replying due to leak through from the VHF
to the MF carrier.
the evenings VKN8 could be received interstate and I have heard the station
, It was very rich in harmonics with the 2nd heard many miles from the
Sunday mornings VKN8 conducted radio checks with all the fire trucks usually
Henry VK3EN as the operator conducting the tests, Henry designed and maintained
station for many years up his retirement, Henry is now a silent key after
very active on 160 metres AM.
of the frequency used VKN8 could be received on any AM radio including
radios and many years before Victoria Police also used MF before moving
VKN8 closed down on MF in 1972 and are now on UHF.
of Henry at the controls of VKN8