Kevtistic wrote:SPK4 wrote:Kevtistic wrote:For bell systems, most schools I've attended used National Time for their bell systems, w/ a 4 second ringing time.
Do you mean either a 4-second ringing of mechanical bells and/or a 4-second electronic tone over a PA System?
Mechanical bells--none of the schools I have attended have ever used bell tones over the intercoms.
Simplex4Life wrote:1st ES - I have no clue about what kind of bell system they had, but it used vibrating bells, I think 6" ones behind grilles. They were definitely loud though. They were probably either Edwards or Simplex, and they rang for either 3 or 5 seconds. The school was built in the mid-70s and had a more open architecture; the classrooms were open to the hallway and the walls were movable. I've never seen that kind of setup anywhere else. Therefore, I don't think they had a clock system. I'm not sure about the PA system.
2nd ES - Simplex clocks and time system with tones over the PA system (which was most likely Simplex, since the fire alarms were also Simplex). The class tone only rang when school started and ended. The tone was a 500 Hz chime with 3 dings that lasted about 1.5 to 2 seconds, and then a ding that was cut off after about a half-second. The announcement tone was about 700 Hz (not sure of the exact frequency, but it was an F note) and lasted either .5 or 1 second.
MS - the middle school used to be 2 separate schools, but they were connected around 1970. Some of the rooms had Standard clock/speaker units, and the rest of them had separate clocks and speakers. They originally used bells - half of the school had grey IBM 6" bells, and the other half had black Autocall bells, mostly 4" but some were 6". Actually, there was one tan 8" bell like the one in SimplexTech's vid when he was testing that old IBM/Simplex system. When I went there, they had a class tone over the PA that sounded the same as my ES except there were 4 dings. The clock system was most likely Standard, but I'm not sure about the PA system. The announcement tone was a half-second 500 Hz tone, but it sounded a bit buzzier than the class tone. Half of that building was renovated in '99, and I don't know what companies they use now.
HS - the original high school had Edwards clock/speaker/phone units, and I think the bell system was Edwards. They had Edwards 4" adaptabels, and buzzers in the rooms, behind the clocks. They rang for 3 seconds. I thought the bells were loud, but not as loud as my first ES. Some of the buzzers didn't sound though. A few of the ones that did were loud, and others were quiet. That school was renovated in 2000, and they now have Simplex clock/speaker units, and they use the exact same tones that my second ES uses. I'm pretty sure their time system is Simplex. The PA might be Simplex also.
EdwardsFan wrote:Elementary school: Some Edwards bell control panel. There were 10 bells installed inside + outside the school. There are Edwards 4" adaptabels (5), Edwards 10" adaptabels (4), and 1 Edwards adaptahorn (outside). Outside, The only 6" adaptabel we had was replaced with a 4" adaptabel, and one of the 4" adaptabels were replaced with a adaptabuzzer, then a 10" adaptabel. The only bell that doesn't work is the one in the gymnasium, a 10" adaptabel. I think it's disconnected, it hasn't worked since I began school there.
High school: The bells are over the PA system, and are controlled by a panel ( the company is named ______tone, have no clue). There are about 11 bells installed around the school. A mix of 6" adaptabels, and 4" IBM and Simplex bells. I don't know if they were part of an old bell system, or are used for another system, but I have never heard them go off.
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