Public Safety

Alliance Supports Public Safety Wireless Networks

Public safety networks MUST work. First responders use LMR systems for communications. Typically these networks use a combination of the public switched telephone network and microwave wireless links to connect the towers where transceivers are located. Alliance Corporation distributes microwave wireless solutions for LMR backhaul and we distribute public safety DAS / ERRCS (Emergency Responder Radio Communication Systems). Reliable and convergent critical communication systems are important to allow emergency responders to safely carry out their duty.

Broadband Wireless Solutions More Reliable and Saving Money

For several reasons the municipalities have decided that they would like to find a way to move away from using the PSTN and build their own network.

  1. Poor quality connections. Over time copper PSTN lines have degraded in quality and so sometimes they don’t provide clear signals and thus the emergency services users of the LMR network hear cracks, pops and other noises on their radios.
  2. Major price increases. In some areas the incumbent carriers have decided to build out fiber optic networks to replace the aging copper infrastructure. Because of this, the monthly recurring cost that the municipalities pay will increase substantially. On average for each PSTN backhaul link the municipalities were paying $100 per month; with fiber the cost would increase to $500 – $1000 a month. That is a very significant cost increase and it’s an operating cost that never goes away!
  3. Poor Network Reliability. The wired PSTN isn’t always as reliable as we need it to be. Reliable communications systems are paramount for public safety. Unfortunately, when the weather is bad, emergency services are needed more than ever and sometimes poor weather can cause parts of the the public safety network to go down. If one of the connections to a particular LMR tower is down, the body-worn radios of EMS most likely will not work when within the range of that tower. Body-worn radios are lower power and thus cannot get a signal from a tower than is further away. So an officer in one of these dead zones might no be able to radio for assistance when needed. Wired networks are vulnerable – to fire, to construction breakage, bad weather .

Public Safety DAS Networks / ERRCS

Alliance stocks a wide range of products to support public safety DAS / ERRCS (Emergency Responder Radio Communication Systems), including:

Bi-Directional Amplifiers (BDA)

  • SOLiD: 700/800 Public Safety. Class A & Class B
  • ADRF: VHF, UHF, 700/800 PS, & Cellular. Class A & Class B
  • G-Wave: VHF, UHF, 700/800 PS – Class B
  • Comba: 700/800 PS & Cellular. Class A & Class B

Active DAS Head End/Remotes

  • SOLiD
  • Cel-Fi by Nextivity
  • ADRF
  • G-Wave
  • Comba

Cabling (coax or fiber)

  • RFS
  • Wireless Supply
  • Corning
  • Prysmian

Connectors/Jumpers

  • RFS
  • RF Industries
  • Wireless Supply

Antennas

  • Galtronics
  • Wireless Supply
  • Laird
  • ADRF
  • Amphenol

NEMA 4/4x Enclosures

  • Acceltex
  • DDB

Back-up Power

  • Newmar Power
  • Alpha Technologies

Passives

  • Microlab
  • Wireless Supply

Lightning Protection

  • Polyphaser
  • AC Line

Grounding

  • Polyphaser
  • AC Line

Our team of Subject Matter Experts can help recommend the right products for your requirements because one small item missing from a BOM can cause huge delays. We will help you develop the bill of materials that you need including all of the ancillary products such as splitters, combiners, antennas, cable and battery-backup systems.

When you partner with Alliance Corporation, you get:

  • The right inventory for public safety networks– ‘one stop shopping’
  • Competitive pricing
  • Access to Public Safety Subject Matter Experts
  • Personalized service (no one is a number at Alliance!)
  • We let the Customer drive the Process, rather than letting our Process drive the Customer!