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Question about Scream Masters.

Sun May 08, 2022 2:01 am

I remember seeing a photo of a rotating Scream Master siren in a newspaper dated around 1952 to 1956. This siren had two heads, like a 550-DHTT, but had a 20hp motor and had an output of 125 decibels at a 100 ft.
I scoured Google, the entire forum and also on the ARS subreddit, but couldn't find the photo.
Source: https://www.airraidsirens.net/forums/vi ... er#p181112
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Re: Question about Scream Masters.

Sun May 08, 2022 9:23 am

I gotcha.

Image
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Re: Question about Scream Masters.

Sun May 08, 2022 6:11 pm

That looks similar to a 550-DHTT; I wouldn't be surprised if they used the same rotating mechanism as the 550-DHTT.
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Re: Question about Scream Masters.

Sun May 08, 2022 10:39 pm

They did not have a rotator, they were a stationary siren. That unit was located in Merced, California.

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Re: Question about Scream Masters.

Sun May 08, 2022 10:57 pm

I was already suspicious that they didn't have a rotator, looking at the bottom of the siren. My suspicions are true now, that they didn't have a rotator.
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Re: Question about Scream Masters.

Sun May 08, 2022 11:48 pm

I don't believe Scream-Master made rotating sirens, but they did distribute the 500-DHTT. There was a 500-DHTT near Denver that was mounted on a Scream-Master pole.

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Re: Question about Scream Masters.

Tue May 10, 2022 12:55 am

angrynate210 wrote:
Sun May 08, 2022 11:48 pm
I don't believe Scream-Master made rotating sirens, but they did distribute the 500-DHTT. There was a 500-DHTT near Denver that was mounted on a Scream-Master pole.
Rotational 125 DB units existed.
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Re: Question about Scream Masters.

Wed May 11, 2022 6:17 am

angrynate210 wrote:
Sun May 08, 2022 11:48 pm
I don't believe Scream-Master made rotating sirens, but they did distribute the 500-DHTT. There was a 500-DHTT near Denver that was mounted on a Scream-Master pole.
Your right, Scream-Master did distribute Federal products, Colorado Springs is a good example. Here's some information about their system.
Colorado springs.PNG
Colorado springs.PNG (101.85 KiB) Viewed 1300 times
DETT was Scream-Master's way of naming the DHTT. Kind of how when Darley redistributed Screamers, they called them Champions in the adverts.
Those Model 10s were the Federal Model 7s they had.

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Re: Question about Scream Masters.

Wed May 11, 2022 8:39 pm

Interesting that this document calls the company the Scream-Master Corporation, as the company's name was originally R.J. Zievers, Inc. There must've been a name change at some point.
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Re: Question about Scream Masters.

Wed May 11, 2022 9:13 pm

That is surprising to know. I probably assume that the Rotational Scream Masters' rotators are probably based off of the 550-DHTT (I am not quite sure if there are still manuals around of the insides of a rotational Scream Master. My original assumptions that the rotational Scream Masters weren't rotational, but they were.
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