[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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