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From a practical viewpoint, we believe the application of using the Internet for radio-to-radio communications has the most potential user value. There are two basic applications. The first would be that of Interoperable communications for differing types of radios (i.e. VHF to UHF). There are less expensive solutions if both radios are in the same operating area such as a cross band repeater. Click here for alternate VHF to UHF solutions. If the radios are not within the same operating area, the Internet solution may be the best choice. The second application would be for radio-to-radio extended communications from one operating area to another. The diagram may explain this application a little better.
In this example, let's assume that a hospital
group uses a central answering point for all security calls even though
there may be multiple hospitals far removed from the main facility.
There are some compelling financial reasons to use a single centralized
answering point. However, there are some major losses in efficiency unless
there is some way for the security answering point to communicate directly
with personnel at satellite locations.
As indicated in the diagram above, we will assume the person at the left is in charge of security (it could also be a security dispatcher) needs to talk directly to another radio user many miles away. With an Easy-Link network, the task is as simple as pressing a button! The originating call is received by a Ritron RadioNexus radio, routed to the Easy-Link analog to digital converter, then connected to the PC Ethernet where the call is forwarded to the secondary IP address via transmission over the Internet as digital data.
At the receiving end, the call is received through the secondary Easy-Link A to D converter which reads the IP address of the sending unit and connects to the associated radio after converting the digital data to analog for transmission over the secondary radio to the person on the right. Operationally, these two units talk to each other just as if they were communicating as ordinary 2-way radios.
To accomplish this objective, the Easy-Link units at both ends must be connected to the Internet with a high speed broadband connection. They can be either directly connected or a part of an Ethernet user group. The total system configuration consists of the user radios at both ends (we favor the Ritron SLX ). Additional information on the SLX is available at www.usa-radio1.com/slx. We also offer the Ritron Jobcom series radios with prices starting under $200 that are fully compatible with the Easy-Link system. Additional information is available at www.usa-radio1.com/jobcom.
The Easy-Link units are $795 each. If a radio is already in place, cables are available for connection to most popular radios for $35. If you are starting with a brand new system, you may want to consider the purchase of a Ritron RadioNexus radio for $495. The total cost of this system, excluding user radios and Internet service would be just $2,650 complete! If you have a simple requirement requiring coordination between a single primary and secondary site, the basic Easy-Link system is all you need. If you need to coordinate between multiple sites, we replace the Easy-Link with an IP Server and as many Gateways as may be needed to support multiple secondary sites. The diagram below shows how this works for a two site system.
In larger buildings, it may be desirable to add a Repeater. The Ritron Liberty Repeater is ideally suited for extending the range between handheld radios within a building. A Repeater can operate as a part of the Easy-Link system with the understanding that a separate channel may be desirable for connected calls between the primary and secondary sites. Although it is possible to use one of the regular channels at the primary or secondary location, it should be noted that this would cause all calls made on either system to be heard on BOTH systems. That may or may not be a problem. In general, we recommend obtaining a new channel for calls connected between the two sites. This special channel can be programmed into existing or new radios and scanned to assure that no calls for the alternate site are missed.
If you have a need that can be addressed using this technology solution, please give us a call - locally in the Birmingham, Alabama area at 205.854.2611 or nationwide, toll free at 1.800.489.2611. If you are ready to order now, you can order on line directly from our web store.
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Easy-Link RoIP modem for connection to RadioNexus shown below. Two of these units would be required for a simple two site system. Use of these devices requires Internet connection, compatible device at point or origin and associated radio. The RadioNexus is ideally suited for this application although other radios can be used with suitable adapter cable. Order Code ROIP102. You can order this item on line by clicking on the Buy-Me button at the right.
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Radio connector cable. Used to connect Easy-Link with host radio. Standard cable is for Ritron RadioNexus. Cable assemblies are also available for connection to other radios. Order Code ROIP103.
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A RadioNexus VHF or UHF
transceiver connected by an RJ45, CAT-5 or E&M connection is a
simple solution to VHF or UHF RoIP. RadioNexus comes with
it's own antenna and power supply. Just plug it into an AC
outlet and connect your host device. Programming on your desired
frequencies is included at no additional charge. This item
is currently not available for UHF trunking. Note:
Router and software is not included for RoIP operation. Additional
information is available by clicking here.
Order Code CP308C.
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A new high powered
version of the Liberty Repeater is available for the UHF band with
your choice of narrow band 12.5 kHz or 25 kHz. This new unit
has up to 8 watts of power. That's up to four times
more powerful than the original highly acclaimed 2 watt model.
Our low price includes antenna, power supply and duplexer.
In most installations an external antenna is not required.
Order Code LIBRPT08.
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We will do your programming for you at no charge. If you prefer to do your own programming, we offer a PC programming kit with software, cable and instructions. Order code RPT-PCPK-P2.
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$129 |
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Doing business with USA Radio is easy! You can charge to American Express, Discover, MasterCard, VISA, or we will accept Purchase Orders from approved customers. |
User information. Products sold by USA Radio are warranted to be technically compliant with the manufacturers specifications. No other warranty relative to use of the equipment or related service, when applicable, is expressed or implied. USA Radio makes no claim for suitability or fitness of users purpose or application. USA Radio is not responsible for claims arising from the use of equipment or services provided by or through USA Radio in which there are losses attributed to the use or application of equipment and/or related services. User agrees to these terms as a condition of purchase.
Be sure and insert your desired frequency and tones in the comments section if you are ordering on line. If you prefer, you can fax your programming information to 205.853.6178. If you have questions, give us a call at 1.800.489.2611.
Thanks for visiting with us!
The USA Radio Team
At your Service!
Copyright 2005/2006 - USA Radios of
Alabama Inc.
This page was last updated on 10/27/2007
American quality at prices
below the imports!
36 - 20th Avenue NW - Birmingham, AL 35215
Phone Toll Free - 1.800.489.2611