RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > Announcements and News > Community Announcements and News

Community Announcements and News Announcements and News of interest to the RadioReference.com Community. All new threads posted here will be moderated by the administrators. Members are encouraged to post news and information here for the community.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 02-25-2011, 3:29 AM
k0jwh's Avatar   Premium Subscriber
Premium Subscriber
Amateur Radio Operator
Amateur Radio
 
Join Date: Jul 2010
Location: k0jwh
Posts: 1
Default Sedgwick County (Wichita), KS - P25 bid to be awarded Mar. 1, 2011

County Commissioners will award the bid for a new 700/800MHz P25 Digital Radio System on Tuesday, March 1st, 2011. The current radio system is the older Analog Motorola Type II Smartnet system. This system is shared by all Federal, State, County and City Police agencies, County, City and area Volunteer Fire Departments, the county's Emergency Medical Service as well as public works.

Information about the bidding process can be found here https://ssc.sedgwickcounty.org/RFQRFPWebApp/RFP2.aspx
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 02-26-2011, 11:04 PM
Member
  Premium Subscriber
Premium Subscriber
 
Join Date: May 2006
Location: Rawson, OH
Posts: 258
Default Yet another agency jumping on the encryption bandwagon too!

From Page 27 and 28 of the RFP located Here: http://www.sedgwickcounty.org/Purcha...es/10-0254.pdf
The Adddendums can be found at the 1st post.

In the present 800 MHz trunked radio system, it is impossible to control who
monitors calls outside of the network. Command and investigative conversations may
involve topics of a legally restricted or sensitive nature where eavesdropping by outside,
unidentified persons is undesirable or unacceptable.
Accordingly, the new digital voice radio network shall include provisions for call
privacy whereby identified users within the network can be excluded from certain talk groups
or individual conversations. This provision must offer sufficient flexibility such that the
desirable features of monitoring can be retained while permitting privacy to conversations
that are potentially confidential. Finally, the new network shall incorporate technical features
that prevent unauthorized listeners from monitoring any network calls. Ideally, the new
network should inhibit the ability of non-network users from monitoring actual voice
transmissions of any type (inclusive of telephone interconnect calls) as well as preventing
such persons from monitoring those call assignments transacted via the network’s digital
Sedgwick County…Working for you
28
control channel.
Proposers should describe the scope and operation of such provisions inherent within
their proposed solution that prevent the types of undesired radio monitoring discussed above.
3.2.4 Encryption
Digital voice encryption, using Improved Multi-band Excited (IMBE) as well as
Advanced Multi-Band Excited (AMBE) vocoder technology coupled with federally approved
digital encryption schemes, is a required feature of the new network. All proposed
encryption should be to APCO Project 25 Standards.
Three modes of encrypted digital voice operation are desired:
3.2.4.1. Unit-to-unit, where conversations in an encrypted talk group are
secure. These can be monitored at a dispatch or control point.
3.2.4.2. Dispatcher-to-unit, where conversations between the County’s
Communication Center, Backup Center(s) and field units are secure.
3.2.4.3. Unit-to-telephone network, where conversations between encrypted
units and the switched telephone network are secure.
The new network will provide encrypted transmission so that system access delays
are equal to those in the clear mode. Encrypted transmissions will not degrade the operation
of clear-voice features nor lengthen system access or audio transport delays to other users.
Encryption shall not degrade the range or coverage less than normal digital performance.
__________________
--Patrick
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:26 PM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2011 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions