The Wailing Siren Mystery [SEP] series
The Wailing Siren Mystery
The Wailing Siren Mystery is Volume 30 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap.
This book was written for the Stratemeyer Syndicate by Andrew E. Svenson in 1951. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as part of a project directed by Harriet Adams, Edward Stratemeyer's daughter. The original version of this book was shortened in 1968 by Priscilla Baker-Carr resulting in two similar stories sharing the same title.
Plot summary.
-second intervals.
- Pulsed Wail - Pulsating wailing tone, alternating at half-second intervals.
- Pulsed Steady - Pulsating steady tone, at half-second intervals.
A unique feature of the SiraTone siren series was the ability to conduct routine tests with a Westminster Chime melody instead of an actual alarm tone, intended to be a more pleasant alternative to the use of actual alarm tones. This allowed for operators to test sirens without fear of public panic and still ensure siren speakers were fully functional. Various