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Old 11-27-2013, 1:58 AM
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Question Norman State Motortrbo Trunked System?

Found this Mototrbo trunked system issued by the state in Norman? What is this all about? Anyone know?

ULS Application - Industrial/Business Pool, Trunked - 0006027992 - OKLAHOMA, STATE OF
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Old 11-27-2013, 8:51 AM
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Default Norman State Motortrbo Trunked System?

The address checks to a location on the OU campus
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Old 11-27-2013, 9:07 AM
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sheesh....400W ERP???? I guess it's better to hear than to be heard (on a 4W portable that is).

-M142
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Old 11-27-2013, 9:29 AM
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Originally Posted by monitor142 View Post
sheesh....400W ERP???? I guess it's better to hear than to be heard (on a 4W portable that is)
400W ERP and 50W output power is only 9 dB.
That would be typical if they have a 12 dB antenna and 3 dB loss in the feedline and duplexers.

That 9 dB gain applies to the receiver too. It would make the portables appear to have 8 times more ERP than if the receiver had a 0 dB antenna.
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Old 11-27-2013, 3:40 PM
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Originally Posted by HogDriver View Post
The address checks to a location on the OU campus
Facilities Management. Formerly Physical Plant. Partially privatized to Corix. Used to use Nextel, but with that system gone ...
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Old 11-28-2013, 12:47 PM
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Quote:
Originally Posted by nd5y View Post
400W ERP and 50W output power is only 9 dB.
That would be typical if they have a 12 dB antenna and 3 dB loss in the feedline and duplexers.

That 9 dB gain applies to the receiver too. It would make the portables appear to have 8 times more ERP than if the receiver had a 0 dB antenna.
Tom, I get that. Just saying this is so typical these days of the licenses that I see going through. The talk in and talk out are vastly different no matter the gain of their RX antenna and the preamp/multicoupler they might use.

Kind of like the high level mountain top licenses that are coming out these days in my neck of the woods with 100W PO and 4W ERP.

Yeah right!

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Old 11-28-2013, 6:31 PM
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I noticed today that the old physical plant VHF DB-224 is the only non-cell antenna up on that water tower. Looks like things are still pending for a bit.
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