NARRI - D-Star

NARRI - D STAR INFORMATION PAGE

The name D-Star stands for “Digital Smart Technologies for Amateur Ra dio the JARL standard for Digital Voice and Digital Data on VHF/UHF/Above.

NARRI has the following D-Star repeaters in Las Vegas under the N7ARR call sign:

VHF (Module C) on 145.175 (-) 0.600 MHz,

UHF (Module B) on 446.800 (-) 5.000 MHz,

1.2 GHz DV (Module A) on 1,293.9 MHz (-) 22 and DD on 1,251.0 MHz.

The above repeaters can connect to D-Star system Gateways and Reflectors via the N7ARR Gateway.

NARRI also operates Reflector REF014 with three conference channels.

NARRI has D-Star coverage into the sleeping rooms of most "Strip" hotels and a 45 mile plus range in the Greater Las Vegas area.

Go to https://n7arr.dstargateway.org/Dstar.do to register and obtain a ‘license” for use of the N7ARR Gateway. Let Kent W7AOR know by e-mail w7aor@narri.org that you completed the first part registration and then log back in to complete the final step. Click here for assistance withregistration

RADIO SETUP TO USE N7ARR LAS VEGAS D-STAR REPEATERS

While in Las Vegas, setup your D-Star radio with the following, or substitute your local Gateway in place of N7ARR. Program in the information below under "menu/call sign", in your settings:

For NARRI UHF Repeater Operation

UR:CQCQCQ

Rpt1: N7ARR--B

Rpt2: N7ARR--G

MY: <W7AOR>

For NARRI VHF Repeater Operation

UR:CQCQCQ

Rpt1: N7ARR--C

Rpt2: N7ARR--G

MY: <W7AOR>

For NARRI 1.2 GHz Repeater Operation

UR:CQCQCQ

Rpt1: N7ARR--A

Rpt2: N7ARR--G

MY: <W7AOR>

Note: Use your own call sign in place of W7AOR. Each call sign location (Rpt1 and Rpt2) can hold up to eight characters. The 8th character (B and G in the above example ) is the “Switch” and is necessary for controlling the repeater. Spaces are required to position the switch character into the 8th character location UR is the destination.

See the NARRI system operations manual, that is provided to NARRI members, for programming details.

Link to a handy programmer that makes programming easy. DSTAR INFO RADIO PROGRAMMER

Link to a list of all D-Star repeaters sorted by state. LIST OF ALL D-STAR REPEATERS

For NARRI Western D-Star Reflector REF014

NARRI owns and operates D-Star reflector number as the Western D-Star Reflector REF014. It is a high bandwidth server with three Channels: A, Band C. D-Star Gateways and DV Dongles are free to connect any of the three channels. D-Star owners have asked to have a 1.2G technical net on REF014A. REF014B has Emcom priority and REF014C is a hangout for Northern California, Nevada and Oregon plus visiting gateways and dongles.

Click this link D-STAR REFLECTOR REF014 to see who is connected to REF014. The instructions for linking, via N7ARR Gateway, to REF014 are provided below.

UR:REF014AL (connects to channel A, REF014A or make UR REF014CL for connecting to REF014C. After connecting, change UR to CQCQCQ .)

Rpt1: N7ARR--C

Rpt2: N7ARR--G

MY: <W7AOR>

Note: If a NARRI repeater is linked to REF014 do not connect directly to the N7ARR Gateway, connect to the appropriate REF014 channel (module) after seeing where the NARRI repeater connected.

Contact Kent W7AOR@narri.org for further instructions, as needed, for connecting to the REF014 or other D-Star questions.

ANALOG vs DIGITAL COVERAGE

Analoge means that the original information is retransmitted to the receiver/listener without any manipulation. The received information is analogous to the original information. Analog signals are continuous electrical signals that vary in time. Most of the time, the variations follow that of the non-electric (original) signal. Therefore, the two are analogous hence the name analog.

Digital means that the original recorded information is juggled to enable it to be preserved without any loss of quality. Digital signals are non-continuous, they change in indiv idual steps. They consist of pulses or digits with discrete levels or values. The value of each pulse is constant, but there is an abrupt change from one digit to the next. Digital signals have two amplitude levels called nodes. The value of which are specified as one of two possibilities such as 1 or 0, HIGH or LOW, TRUE or FALSE and so on. In reality, the values are anywhere within specific ranges and we define values within a given range.

There are proponents for both digital and analogue. More repeaters are analogue at this time.

ICOM IMPLEMENTATION OF D-STAR

ICOM implemented the D-Star standard with the following equipment:

Digital Voice (with simultaneous low rate data) on 2 meters
Digital Voice (with simultaneous low rate data) on 70 centimeters
Digital Voic e (with simultaneous low rate data) on 23 centimeters
Digital Data (128Kbps) on 23 centimeters
Point-to-Point Backbone (10 Mbps) on 10 GHz. band
Internet Gateways

INTEREACT WITH THE D-STAR SYSTEM USING A DVDONGLE

The DV Dongle connects to your PC or Apple Mac via a USB port and provides encoding and decoding of compressed audio using the DVSI AMBE2000 full duplex vocoder DSP chip. This allows uses to connect to Gateways and Reflectors onthe D Star System. This devise requires a PC or Mac with 2+GHz CPU and 512 MB RAM , two USB-2 full speed ports , a head set (Logitech preferred), and Broad Band internet. See DVDongle.com for more information.