It’s that time again …
It’s that time again, did you remember your time pieces?
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RepeaterGear professional quality gear for industrial, public safety and amateur radio. Custom built communication transportable systems, wireless networks including 4.9GHz, 900MHz NLOS, 2.4GHz, 5.8GHz as well as VHF, UHF and Satellite connectivity.
Communications … the act or process of communicating.
Experience within the Commercial Land Mobile Communications industry since 1980 along with experience in Amateur Radio operations since 1991. From our experience we continue to find that communications failure is one of the greatest problems facing any organization. With the multitude of different communications systems in use it is very difficult to get adequate information to those who need to have it. Solutions are available that can help your business in the utilization of these technology resources.
Computers … an electronic machine capable of accepting and processing data.
With over 20 years of technical knowledge, ResourceOne has the capability to provide technical support, service, training and solutions to special needs. Resources are available to assist with network applications, design of wire and wireless digital networks.
Networks … a group linked together.
Technology is advancing ever so quickly and the need for interoperability is ever increasing. Through networks the mission can be accomplished. From in-house local networks to global wide area networks that link voice and radio via the Internet.
What is the function?
What will it be used for?
How will it connect to other stations?
What is the function:
A Remote Base provides a method in which locations outside the normal range of a Base Station or Repeater can be accessed. Thus providing additional communications coverage area.
What will it be used for:
Provide additional communications coverage area; also can be used to augment communications resources in emergency situations and special events.
How will it connect to other stations:
Depending on the complexity of the Remote Base (and the amount of funds available) the ideal situation would be to have a combination of RF and Internet backhaul capabilities. If Internet access is available this would be the ideal method for connectivity. Once again if funds are available use of Satellite Internet services would provide some additional remote accessibility.
When using RF backhaul capabilities there are number of methods that can prove to be beneficial. When possible consider VHF Links and for full-duplex A VHF / UHF combination. We cannot forget about the flexibility of HSMM on 2.4, 3.3, 5.8 GHz and even 902 MHz has some promising potential.
Can HF be considered a viable extension of the Remote Base Link? Depends on the mission objective. Looking back to some of the applications in the past couple of years where HF Remote Base Links have been used as a method to receive emergency traffic from distant locations out of normal range of EOC there may be some practical usage for HF.
The way the Amateur Radio licensing is set up it is rather tough to test a station in a non-emergency setting. Especially for those holding a Technician Class license. There are some that have taken the test for the General and Extra class license and passed the test yet don’t have a clue about the technology that they were tested on. It appears that some don’t really care about the technology just the fact that they can now “talk voice on HF.” In some instances voice on HF will not be the best approach for getting the necessary information from those that have it to those that need it.
Okay back to the Remote Base chatter …
So what do we need to create a Remote Base?
What do we need to create a Remote Base:
Determine the type of terrain in which the Remote Base will operate; is it urban, rural, forested, hilly, mountains, etc.
What resources are available;
- Internet; Dial-up, Broadband, HSMM, Satellite;
- RF Equipment – HF, VHF, UHF, Microwave;
- Power – Grid, Solar, Wind, Battery, Generator
- Antenna Structure – Building, Tower, Mast;
What is the distance that needs to be covered between the Remote Base and Base / Repeater Site:
Will the distance require additional enhancements via extenders, cross-band repeaters, etc:
Once the above information is available we can start working on creating the actual Remote Base
- Emergency Management / Planning / Training
- Internet Services (VoIP – PBX / RF Gateways)
- Network Services (Wired and Wireless, DATA / VIDEO / VOICE)
- Power Protection (UPS / WIND / SOLAR / GENERATORS)
- Technical Support & Training
Always Be Ready even for those times you really think that it isn’t that time yet. The resources that you create may not be for your own needs, yet they will be of help when you need it because of the knowledge you have gained.
There are times when we think that a job is the perfect for what we need yet time rolls along and bad news is received. But is it really as bad as one would have thought? When you have the talents and skills that are needed can you really create the work that is needed so progress can indeed take place?
What are your talents and skills that you can bring to a group / organization / company that will make things the best possible that many don’t even take the time look at?
It is indeed time to build new technology and resources, are you ready?
Digital Voices – The Formats Presently Being Used in Public Safety and Amateur Radio
APCO P25 Phase I is the present version that is in used across the country for Digital Public Safety, the P25 “open” standard has been reworked by some manufacturers limiting some of the standardization that the P25 was hoped to present..
P25 Phase I has the ability to function as a analog system or digital system.
P25 Presently operates via FDMA (Frequency Division Multiple Access) with the plan for P25 Phase II to use TDMA (Time Division Multiple Access), P25 Phase II will also have the capability to “roll-back” to FDMA for “conventional emergency operations.”
D-STAR is a Amateur Radio system which offers digital voice and data communication. It connects repeater sites over microwave links and the Internet and forms a wide area Amateur Radio network.
The D-STAR system provides a new capability and functionality to the Amateur Radio world and increases the efficiency of emergency communications.
D-STAR provides digital voice at 4k8 baud and data is available via 1.2GHz at a rate up to 128kbps via GMSK modulation – Gaussian Mask Shift Keying,
On VHF and UHF digital voice plus 950bps data can coexist on the same channel.
At the present time only Icom is making transceivers with D-STAR capability. With experimentation one can modify other transceivers for D-STAR Connectivity.
Fixed Base (i.e. repeaters) do not have analog capabilities – Strictly Digital Only.
Mobile/Porable D-STAR enabled equipment have both analog and digital capabilities.
MotoTRBO(tm) MotoTRBO is a product of Motorola with the primary market being Industrial-Business Sector. MotoTRBO is designed to operate digital only on a single 12.5kHz channel by slicing the digital transmissions into time slots thus creating to available channels via TDMA (Time Division Multiple Access).
Data throughput is 2k0 per time slot.
MotoTRBO has analog capability (repeaters can be programmed to operate analog or digital, mobiles and portables can operate analog and digital).
NXDN was designed by Icom and Kenwood primarily for the Industrial-Business Sector.
NXDN is marketed by Icom as IDAS (Icom Digital Advanced System) and Kenwood as NEXEDGE. With channels at true 6.25kHz channel spacing using FDMA (Frequency Division Multiple Access).
NXDN provides 9k6 @ 8.3kHz bandwidth and 4k8 @ 4kHz bandwidth.
NXDN is compatible with analog systems thus making migration from analog to digital easier. Some of the companies participating in NXDN equipment development include: Daniel Electronics, Icom, Kenwood and Ritron among others.