[NHRC-user] Announcing the RadioGrid RG-4 Radio Gateway

[Jeff Otterson]

NHRC Repeater Controllers and RadioGrid LLC are pleased to introduce
the RadioGrid RG-4 Radio Gateway.

The RadioGrid RG-4 Radio Gateway allows Radio traffic to tunnel through
the Internet using industry-standard VoIP technology.

Each RG-4 can control up to four repeaters or link radios. Each repeater
or link radio can be linked to any other port on the RG-4, or, through 
the internet, to repeater or link radio ports on other RG-4 Radio Gateways.
Any port can operate independently or be linked to one or more ports, on 
the same RG-4, another RG-4 on the same LAN, or to other RG-4s through 
public or private IP networks. Your network can support a very large 
number of radios, limited only by available network bandwidth.

The RG-4 is built around Asterisk open source PBX technology. Telephony 
integration is built-in, and fully integrated. Radios gatewayed through 
the RG-4 can be allowed to originate and receive VoIP telephone calls 
from your local network, and (with appropriate external hardware or by 
using an internet telephony provider) to and from the public telephone 
network. This means you can dial into your repeater or remote base from 
anywhere there is a telephone, or Internet access.

The RG-4 uses industry-standard protocols and CODECs. It can interoperate 
with a variety of hardware and software platforms, including Asterisk, 
SIP and IAX-based soft-phones, and a wide variety of VoIP Service 
Providers. The RadioGrid RG-4 can be easily managed and upgraded with 
its built-in web configuration utility.

Because the RG-4 is built with 100% open source software, the entire 
software platform can be modified by experienced end users. New 
functionality can be added by editing the supplied scripts, or writing 
new applications to run on the RG-4.

Security is built in. Connections to the RG-4 can be limited to specific 
IP addresses, hostnames, and/or require authentication using conventional 
passwords or asymmetric encryption, using RSA keys.

Specifications:

  VoIP Protocols

    * SIP
    * IAX2

  VoIP CODECS

    * G.711 (?-law)
    * GSM

  100% Open Source

    * uClinux, including Linux 2.6.16 kernel
    * Asterisk 1.4.19
    * RadioGrid drivers and scripts
    * All source code is available

  Web-based setup and management

    * No expensive proprietary programs to buy!
    * Web-based Software Update keeps you current.

  Digital Voice Storage

    * All prompts are stored voice
    * ID messages
    * User-recordable messages
          o record over phone
          o record over the air
          o record offline and upload
    * Time-of-day messages (Internet access required to set the clock)

  Hardware Features

    * 500 MHz Blackfin processor provides about 1,000 integer MIPs
    * 64 MB RAM
    * 4 MB Flash memory
    * 1 GB SD Card
    * LEDs indicate radio interface status, PTT, COR, CTCSS
    * Digital potentiometers allow audio level adjustments without 
      physical contact with the RG-4
    * Two RS-232 ports allow remote control of HF and other frequency-agile
       radios, including the popular Icom IC-706 and Yaesu FT-897.
    * Radio interface is standard DB-9 connector.

Requirements

    * Internet connection with at least 128 KBPS inbound and outbound. 
      More (much more!) is better.
    * Static IP address or reliable dynamic DNS service
    * Ability to *quot;port-forward" at the router if the RG-4 is 
      on a private IP address.
    * 12 volt DC power, at 200 mA.
    * Computer with working web browser for configuration and setup.

NHRC / RadioGrid Synergy

The RadioGrid RG-4 Radio Gateway was developed by RadioGrid LLC in close 
cooperation with NHRC Repeater Controllers. NHRC's repeater control and 
radio interfacing expertise was combined with RadioGrid's advanced 
development experience to produce the RG-4 Radio Gateway.

About NHRC Repeater Controllers

NHRC Repeater Controllers (NHRC LLC) is a leading manufacturer of 
repeater controllers and related accessories for the amateur radio, 
land mobile radio, and government/public safety radio markets. Since
its founding in 1998, NHRC has sold thousands of repeater controllers
 and related accessories to customers worldwide. NHRC is the sole
 amateur radio distributor for all RadioGrid products.

About RadioGrid, LLC

RadioGrid is a company formed in 2006 to design and develop advanced 
VoIP solutions for radio users.

For More Information

For more information about the RadioGrid RG-4 Radio Gateway, 
please contact:

NHRC Repeater Controllers 
415 Fourth Range Road 
Pembroke NH, 03275 
603-485-2248 

email info at radiogrid.com

http://www.radiogrid.com
http://www.nhrc.net