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by kb4mdz
Sat Aug 01, 2020 11:38 pm
Forum: Siren Maps
Topic: The Official NC Siren Map (BIG update 7/25/2021)
Replies: 240
Views: 104902

Re: The Official NC Siren Map

[quote=CarolinaHurricane20 post_id=201711 time=1596294078 user_id=159578] I have found all of Duke University's Sirens. Modulator 6024s located in Durham. Update: Duke has DSAs too! Mr Gleason, do you know anything about the DSA installations on Duke? #1: 36.008450, -78.916512 (Not seen on Street Vi...
by kb4mdz
Sun Jul 26, 2020 9:41 pm
Forum: Siren Maps
Topic: The Official NC Siren Map (BIG update 7/25/2021)
Replies: 240
Views: 104902

Re: The Official NC Siren Map

[quote=CarolinaHurricane20 post_id=201333 time=1594489325 user_id=159578] I also saw some Modulators. Is that the odd one out, or is Raleigh slowly upgrading their system? [/quote] Where did you see the Modulators? There is a Modulator on the campus of Meredith College (which I helped install ahhh b...
by kb4mdz
Sat Jul 11, 2020 9:44 pm
Forum: Siren Maps
Topic: The Official NC Siren Map (BIG update 7/25/2021)
Replies: 240
Views: 104902

Re: The Official NC Siren Map

[quote=CarolinaHurricane20 post_id=201332 time=1594488456 user_id=159578] Also, can you clarify on the level sense? [/quote] Oh, yeah, sorry. ' Level sense' are at dams, they measure the water level going over the spillway & report it back to the control room. If it gets too high, the command to...
by kb4mdz
Sat Jul 11, 2020 7:26 am
Forum: Siren Maps
Topic: The Official NC Siren Map (BIG update 7/25/2021)
Replies: 240
Views: 104902

Re: The Official NC Siren Map

Raleigh Flood Warning Sirens: #A01, Lake Wheeler Dam, Level sense and siren, 35.69482, -78.69433 #A02, Brookwood at Highway 401, 35.68431, -78.68486 #A03, Swift Creek, 35.67817, -78.65745 #A04, Buffaloe Road at Shore Drive, 35.67357, -78.63412 #A05, Benson Road, between Swift Creek & Rand Road, ...
by kb4mdz
Wed Jul 08, 2020 6:41 pm
Forum: Main Outdoor Warning Sirens Board
Topic: City of Raleigh's Flood Warning Sirens
Replies: 12
Views: 6598

Re: City of Raleigh's Flood Warning Sirens

[quote=CarolinaHurricane20 post_id=201240 time=1594219124 user_id=159578] Thank you. Can you tell me the next time they will do servicing on the sirens? Thanks [/quote] There's the rub; I haven't worked for that company for over 10 years. No contact, no knowledge of their schedule. If you're close t...
by kb4mdz
Wed Jul 08, 2020 4:11 pm
Forum: Other Warning Systems - Indoor, Outdoor and Vehicular
Topic: Train horn in Pensylvania
Replies: 20
Views: 20267

Re: Train horn in Pensylvania

VHF High-Band antenna too. That coulda been installed a liiiitle bit higher to avoid the metal of the horn distorting the pattern of the antenna. :lol:

(in reality, it won't bother it that much)

Nice!!
by kb4mdz
Wed Jul 08, 2020 11:25 am
Forum: Main Outdoor Warning Sirens Board
Topic: City of Raleigh's Flood Warning Sirens
Replies: 12
Views: 6598

Re: City of Raleigh's Flood Warning Sirens

[quote=CarolinaHurricane20 post_id=201127 time=1593539134 user_id=159578] Hello, I was wondering about the City of Raleigh's Flood Warning Sirens. Does anyone know when they test? [/quote] (when I was working for the company that did the testing..) No set schedule, except it had to be done every 3 m...
by kb4mdz
Tue Jul 07, 2020 6:27 pm
Forum: Other Warning Systems - Indoor, Outdoor and Vehicular
Topic: Campus Alert system..
Replies: 7
Views: 7405

Re: Campus Alert system..

As a matter of fact (it's been a while since this thread was touched) I do. I now work on the campus. Locations of WolfAlert sirens that I have seen: -Poe Hall; all 4 sides of the roof. -Reynolds Coliseum, a 4-fer on a pole on the roof. -100 William Moore Drive, Vet School Campus, (35°47'59.7"N...
by kb4mdz
Fri Jun 05, 2020 11:52 am
Forum: Siren Maps
Topic: Need Nuke system maps for NC
Replies: 8
Views: 645

Re: Need Nuke system maps for NC

Jason, I can give you the Raleigh Flood Warning Siren locations, (since I used to maintain them) and some of the Campus Alert Sirens for NCSU (I work there now, have been noting where they are), Meredith College and a couple at UNC-CH and Duke. Also I have a couple fire stations & such, but it's...
by kb4mdz
Mon May 13, 2019 5:26 pm
Forum: Main Outdoor Warning Sirens Board
Topic: Strange Transformer Things on Sirens
Replies: 5
Views: 2924

Re: Strange Transformer Things on Sirens

The true name for them is 'current transformer'; https://en.wikipedia.org/wiki/Current_transformer basically, they provide a fixed ratio of current output to the measuring meter for a certain current thru the main conductor passing thru them; like 10:1 For every 10 amps of electrical current thru th...

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