I can share my personal observations from two County Fire stations back in the 70's.
15's had one of the first SCU base units issued and over the station speakers you would hear only most of the second tone for their station followed by any other tone -outs that were selected as well as a bell that would ring for about three seconds.
At 59's, which received a new unit when Whittier was merged into the Consolidated FPD, the second tone would cause the unit to open up and send out a high pitched alert tone lasting several seconds. No part of the two-tone or radio channel was heard until the alert tone ended. They did not have a bell or klaxon.
I went in to a good number of stations in the mid 70's and into the early 80's and it would be very unusual if the station radio would have been on. If the BC was at the station he would likely have his HT with him. Radio traffic was never ending so I think it would become a nuisance real quick
15's had one of the first SCU base units issued and over the station speakers you would hear only most of the second tone for their station followed by any other tone -outs that were selected as well as a bell that would ring for about three seconds.
At 59's, which received a new unit when Whittier was merged into the Consolidated FPD, the second tone would cause the unit to open up and send out a high pitched alert tone lasting several seconds. No part of the two-tone or radio channel was heard until the alert tone ended. They did not have a bell or klaxon.
I went in to a good number of stations in the mid 70's and into the early 80's and it would be very unusual if the station radio would have been on. If the BC was at the station he would likely have his HT with him. Radio traffic was never ending so I think it would become a nuisance real quick
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