Digital Modes In Amateur Radio

Digital modes Are Great For New Ham's & Old Alike

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Digital modes Are Great For New Ham's & Old Alike

 

Operating D-STAR

To a great extent, operating using the D-STAR system is like operating using FM repeaters. Most of the same basic courtesies and procedures exist. But there are a few exceptions...

Calling Stations: When calling stations, especially a CQ / General Call, you need to specify where you are calling from. Are you on the local repeater are on a remote repeater? Any station that wants to respond to your call needs to know how to program their radio.
Example: Is there anyone listening on the KI4SBA repeater, this is WA4YIH on the WD4STR repeater module A.

You can't hear remote activity - When you have your radio set to talk to someone other than your local module, you can't hear any of the remote stations. So when you start talking, please realize that there might be a QSO already occurring on the remote repeater. You can check www.dstarusers.org to see if it has registered any recent conversations.

Station Identification - While the D-STAR protocol handles legal identification requirements for the US-FCC, some countries require voice identification. Just to make sure that everyone stays happy, operators continue to identify just as if they were using any other voice mode.

So you find the equipment a little more than you want to spend, well thanks to David PA7LIM he has developed a way to operate on Dstar, its called the Peanut, David has made it possible to use your Android Phone or A Computer, this is a great way to be able to get on Dstar without a lot of up front cost, and yes all class of license can use.  And with  band conditions low you will find a lot of HF users on, when the HF bands are not workable. You will find many nets as well as general QSO's from folks all over the world ! I will give you Davids Website to read, and remember when signing up with David for your ID you must also have a Dstar Registration, these are not hard to get and be registered..

  http://www.pa7lim.nl/peanut/  

DMR

Probably The Most Inexpensive Digital Mode To Use

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 Brief History DMR was developed in Europe by ETSI, European Telecom Standards Institute and was adopted as Commercial Standard 20 years ago. Initially, Commercial Business Equipment was the only source of DMR handhelds and mobiles. In 2016, several vendors entered the Ham Radio DMR market. These radios are a bit more affordable and designed to be more Ham Friendly.  Audio Quality Digital vs Analog Where an analog signal will lose quality and readability as the signal strength is decreased, a digitally processed signal will remain clear until the signal is lost.   Spectrum Efficiency (Time Slots) Where the bandwidth of an Analog FM signal is 25.0 kHz, the DMR (TDMA) bandwidth is only 12.5 kHz. Not only does it occupy half of the required spectrum, but it has the ability to transmit two separate conversations at the same time. This is accomplished by digitally splitting a transmitted signal into alternating 30 millisecond slices referred to as Time Slots.  Full Time vs Part Time (Repeater) A Full Time (FT) group is one that is always available for monitoring. If the TG becomes active, you will hear the traffic immediately. These are normally Local and State groups. A Push-to-Talk TG is one that requires activation and only stays active for a predefined amount of time. These would be high traffic groups, such as Nationwide, Worldwide, etc. The TG remains active for a given amount of time after your last PTT. It will then release the TS for other potential users. Only one TG can be active for each TS.  Repeater vs. Hotspot There are two main pieces of equipment used to access the DMR network. One is a repeater which is normally located at a high elevation with wide area coverage. The repeater is then linked to an internet connection allowing it to access a DMR network. The other is known as a Hot Spot. These were developed for short range access to the network when there is no repeater available. It is not a repeater, but rather a low power device that receives a digital signal and passes it to a DMR network via the internet 

DMR has become a very popular mode of operation, getting a code plug is not hard many groups will share with you in your area, and there are many Youtube Video's to help you as well,  Here are a few websites that will also provide you with great information !!

 http://www.miklor.com/DMR/ 


 https://www.raqi.ca/~ve2rae/dmr/Amateur_Radio_Guide_to_DMR.pdf 


 https://www.facebook.com/groups/1810973552514937/ 


Probably The Most Inexpensive Digital Mode To Use

FUSION / WIRES X

System Fusion by Yaesu

The most easiest to program at a affordable price !.......

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System Fusion by Yaesu

 

System Fusion is Yaesu’s implementation of Digital Amateur Radio, utilizing C4FM 4-level FSK Technology to transmit digital voice and data over the Amateur radio bands. In the early 2000’s GMSK emerged in the Amateur radio market as the dominant digital mode, however in 2013 Yaesu introduced “System Fusion” which quickly became the dominating digital format in Amateur radio because of quality, reliability and enhanced performance in a wide range of environments.

Digital Communication modes have gained popularity over the years in the market because of superior performance in environments with interference, noise and other contributing factors that degrade the quality of a standard FM Analog signal. Narrower bandwidth and the need for increased spectrum have led to the development of digital communications technology, which has been widely adopted in the Public safety and private business sectors that use two-way radio technology. Unlike it’s commercial counterpart, System Fusion is an Amateur Friendly Digital Operating mode, straying away from some of the design considerations that make commercial solutions less appealing and more difficult for Amateur Radio Operators, providing a simpler interface and features that meet the demands and needs of the Amateur enthusiast specifically. Below you will find more information on this marvelous new technology, and how it can meet every operators demand and needs for a clear and simple Digital Experience.   

WiRES-X – Wide-Coverage Internet Repeater Enhancement System

WIRES-X (Wide-Coverage Internet Repeater Enhancement System) is a comprehensive and easy-to-use system for linking repeaters and/or home stations together, using Internet voice technology. Now you can talk to old friends, or make new ones, around the world.Yaesu incorporated a suite of features within the System Fusion product line that are designed specifically for Amateur Radio Use. These features allow the operator to transmit High quality digital voice simultaneously along with Digital Data, and a High Rate (Data FR Mode) dedicated Digital Data mode that provides a method of transmitting Images, Text message and Telemetry Data at a high rate of speed. 

The most easiest to program at a affordable price !.......

In General

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There are other modes of operation that  also are used in HF, the Tennessee Digital ARG, is a local group that has many that have extreme knowledge of the digital modes. They are on Facebook social media.  Our club as well has several well versed  in the digital modes so if you have questions ,let us know ,we are here to help you and answer questions .. come join us at one of our meetings or get togethers..