[Scan-DC] DC Fire emission designators

Jeff Krauss jeff at krauss.ws
Sat Mar 14 21:41:03 EDT 2015


Someone asked a few weeks ago whether the DC Fire radio system will 
be using LSM, so I took a look at the FCC's ULS database.

The frequency that RadioReference has designated as the control 
channel in the P25 system is 855.46250 MHz.  That is licensed under 
two call signs, 
<http://wireless2.fcc.gov/UlsApp/UlsSearch/license.jsp?licKey=1302170>KNJE616 
and 
<http://wireless2.fcc.gov/UlsApp/UlsSearch/license.jsp?licKey=2520309>WPXT459 
.  They both show 20K0F3E emission designators, which is analog FM 
voice, not digital.  Not LSM.

But who knows, maybe DC Office of Unified Communications doesn't 
bother to operate in accordance with their FCC licenses.

Or am I missing something?

Separately, their 700 MHz frequencies seem to be covered by 
<http://wireless2.fcc.gov/UlsApp/UlsSearch/license.jsp?licKey=2377049>WPTZ766 
but that file doesn't show any emission designators.
This page does provide links to letters with some additional background:
http://wireless2.fcc.gov/UlsApp/ApplicationSearch/applAdminAttachments.jsp?applID=8787965#



At 03:27 PM 3/14/2015, freqhopping wrote:

>Fairfax Co  LSM  Emission code= 8K70D1W P25 Linear Simulcast Modulation
>
>Frederick Co, MD
>8K70D1W- P25 Linear Simulcast Modulation
>8K10F1E- P25 Phase I C4FM voice
>8K10F1D- P25 Phase I C4FM data
>
>Loudoun County not LSM.
>9K80D7W- P25 2-slot TDMA (Harmonized Differential Quadrature Phase 
>Shift Keyed modulation - H-DQPSK)
>8K10F1E- P25 Phase I C4FM voice
>8K10F1W- P25 Phase II subscriber units (Harmonized Continuous Phase 
>Modulation - H-CPM)


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