Project 25 Technology Information Group

Friday, December 6, 2019

Project 25 Technology Information Group

The Project 25 Technology Interest Group is pleased to welcome New PTIG Corporate Member: dbSpectra.


dBSpectra Capture

dbSpectra designs and manufactures Transmitter Combiners, Filters, Antennas, Receiver Multicouplers, Duplexers, Tower Top Amplifiers and customized RF solutions and sub-systems for mission critical communications markets worldwide.

As a startup company in 2001, dbSpectra developed the Control Station Combiner which was unique in that it combined simplexed radios together and reduced the number of antennas required at a location.  Soon after the development of the Control Station Combiner, dbSpectra began to provide specialized RF equipment to those in the Two-Way Radio market.

In 2005, dbSpectra began manufacturing and supporting legacy Decibel Products LMR site management equipment. Today they manufacture a full range of products at their plant in Dallas/Ft Worth. All products are designed and manufactured in the USA. The company was granted ISO 9001:2000 certification in July 2006.

dbSpectra was one of the 1st companies to upgrade Quality Management to the ISO 9001:2008 standard. Subsequently they have been certified ISO 9001:2015 and ISO 14001:2015 in 2018.


Primary Contact:

Name: Jim Bankston

Title: Vice President Applications and System Engineering

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone: 469 322 0080 ext150  

Website link:


The Project 25 Technology Interest Group is pleased to welcome RFI Technology Solutions as a new corporate member of PTIG.  


RFI Horizontal Blue hi rez


RFI Technology Solutions is a designer, manufacturer and distributor of communications antennas, multicouplers, combiners, duplexing filters, amplifier systems and associated hardware. The company’s strengths in engineering, manufacturing, research and development and sales and marketing are maintained by employing dedicated, experienced industry professionals in each key discipline.

RFI Wireless offers customers a diverse range of products and services, from completely integrated in-building and tunnel coverage systems, to the design, manufacture and distribution of low PIM base antennas, multicoupling systems, unique mobile antenna designs, lightning management, cables and connectors, batteries and solar powered site solutions.

Formed in 1979 the company has continually expanded its operations to meet with the requirements of the fast paced industry of which it is a part. RFI holds a number of patents for unique and innovative designs that have been developed to meet with the industry demands for technologically superior systems. With offices based in Australasia. EMEA and North America, RFI is positioned as a true global vendor.

Primary Contact:

Name: Sean Johnson

Title: President, RFI Americas

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone: 330 486 0706 ext 302


Business Development Contact 

Name: Brad Washburn

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone: 330-486-0706 x304

Company WEB site:

Mailing Address:


2023 Case Parkway

Twinsburg, OH 44807

The Project 25 Technology Interest Group PTIG has published the latest update to the P25 Standards. 


This update is based on activity at the most recent TIA TR-8 meetings held June 19-21 in Atlanta GA.

This update is authored by Andy Davis the chairman of the TIA TR-8 Committee and published following each TIA face to face meeting and conference.


New items from the June report:


A revision to the Conventional Interoperability Test standard was approved for ballot

A revision of TSB-88.1-E (Part 1 Performance Modeling) was approved for ballot. 

A revision of TSB-88.3-E (Part 3 Performance Verification) was approved for ballot

A revision of the ISSI/CSSI Interoperability Test Procedures for Trunked Voice Operation was approved for ballot.

A revision of the ISSI Recommended Compliance Assessment Tests bulletin was approved for ballot.

A revision of the Security Services Overview document was approved for ballot.

A revision of the Tier 2 Location Service Specification was approved for ballot.

TCP/UDP Port Number Assignments was approved for ballot.

Mobile Data Peripheral Interface was approved for ballot.

CMS Specification for Packet Data was approved for ballot.

Packet Data Host Network Interface was approved for ballot.

The full report can be accessed on the PTIG website: using the following link:


P25 Standards meetings TIA TR-8 Atlanta June 2018 

Mission Critical Magazine has published a News article on the
new  NASPO ValuePoint P25 Equipment Contract
The full article can be found on the Mission Critical Website using the link below:
An excerpt from the article is below.
NASPO ValuePoint Prepares to Rebid P25 Equipment Contract
By This email address is being protected from spambots. You need JavaScript enabled to view it.

The NVP public-safety communications equipment contract, led by the state of Washington, is preparing to rebid the nationwide public-safety communications equipment cooperative contract. A team of procurement and technical experts from multiple states serve on the sourcing team and assist with bid development and evaluation. Their participation continues for the entire term of the contract. Members of the sourcing team represent Washington, Oregon, California, Idaho, Alaska, Utah, Nevada, Georgia and Tennessee.


To ensure interoperability and compatibility, all products offered on the upcoming rebid contract must meet the Project 25 (P25) Compliance Assessment Program (CAP) requirements. Awarded manufacturers may add products in the categories and subcategories they were previously awarded as long as they meet the following conditions:
• Must be in the category/subcategory awarded;
• Must be P25 CAP tested, certified and listed on the Department of Homeland Security (DHS) website; and
• Must adhere to the percentage off-list discount submitted with their bid.



The team will initiate the rebid process in July 2018 with the release of a request for information (RFI). To receive notification of the opportunity, companies must be registered in Washington’s Electronic Business Solution (WEBS)

The Project 25 Technology Interest Group (PTIG) has published an April 2018 Update to the P25 Steering Committee By-laws as an information resource for the P25 User Community.

Project 25 is a unique user-driven process created to establish current and emerging wireless communications standards that meet the requirements of the public safety community. In this standards development process, Project 25 is directly involved with users and manufacturers. It also involved the development of a partnership with the TIA. Using the TIA Engineering Manual, TIA may develop a suite of technical standards, telecommunications system bulletins and technical white papers that enable the development, manufacture and operation of interoperable Project 25 communications systems and system components that satisfy the Project 25 adopted requirements.

Subsequent to signing the MOU, in 1993 APCO officially changed its name to the Association of Public-Safety Communications Officials-International, Inc. In 2007, NASTD officially changed its name to the National Association of State Technology Directors.
The formal relationship with TIA was established through the execution of a MOU that outlines the responsibilities and obligations of both parties and the framework that TIA and Project 25 agreed to work within.

A key element of the MOU is the clear understanding that the Project 25 Steering Committee may choose to select any standards proposal, telecommunications system bulletin, or white paper as a P25 Standard, but a TIA/Project 25 standard can only be created in accordance with the TIA-approved Engineering Manual, policies, and rules and regulations that coincide with the requirements of the American National Standards Institute (ANSI) process for Standards Development Organizations (SDO).

The Project 25 Standards Process is based on users determining the functionality and critical interfaces that require standardization to ensure interoperability among Project 25 system components produced by any manufacturer. While it is a user driven process, it is done in cooperation with industry to ensure both the expectations and deliverables can be achieved. These functionalities and interface requirements are documented in the Project 25 Statement of Requirements (P25 SOR). The P25 SOR is in turn approved and maintained by the P25 Steering Committee. Formal standard documents are developed, balloted, published, and maintained by the TR-8 Mobile and Personal Private Radio Standards Committee of the Telecommunications Industry Association (TIA).

The P25 Steering Committee By-law document can be accessed using the link below:

Project 25 Steering Committee By-Laws (April 16, 2018)









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