The MX7 is a 7 hp siren that was used originally for fires. But when Areyland was advised by the US to install air raid sirens in fear of a bombing, they turned these into air raid sirens
NBE’s Model X5 (Picture from 1930)
A Type 2 MX7. Notice the lack of the flare on the side of the projectors
In 1929, New Bradford Electric (NBE) was instructed to make fire sirens after the Grand Forest Fire of 1928 happened in Central Areyland. NBE spent the next few years making a prototype with great coverage, distinctive sound, and long lasting abilities. Then in 1930, they created their first prototype was released. The initial release in 1931 had major improvements than its original prototype.
Prototype “Model X-5”[]
The Model X-5 is relatively similar to the MX5 except for the large amount of bolts on the projector. The siren had a 5hp Cedar motor as well as a 20 inch rotor. The controller was controlled by a spinning metal disk with a wire touching the surface, followed by a relay controlling the motor.
MX7 Type 2 (1940-1953)[]
The MX7 Type 2 was an attempt to reduce the cost of the 1st generation. The siren’s chopper was shortened by half an inch, the motor cover was shortened by 2 inches, & the pedestal the siren stood on was shortened 3.5 inches. This effectively reduced the cost by 20%. These were also more common in the eastern part of Areyland (Eastborn & Hadabun). The Type 2 had 6 available port ratios as well, these were 6/6 port, 12/12 port, 12/14 port, 10/10 port, 6/12 port, and the rarest port ratio was 10/14. Another notable change is that it lost its flare on the deflector.