Features:

• 1W Power Output
• Available in UHF 400/800 Bands
• Auto Power – On Reset
• Ultra Miniature GSC Connectors
• Receiver Sensitivity – 112 dBm
• PPP Connected Packet Data Mode
• Optional GPS Location on Command
• 5V DC Power Supply
• Status Message

TD-1500MD      TETRA UHF Data Radio / Modem  Coming Soon

Features:

• Bluetooth (Class 1) – Up to 100 Meters
• Interfaces with TecNet TM-8000 Series Mobiles ¹
• External Antenna
• Recharge in Vehicle

Package includes: Dongle, speaker microphone, charging cables, interface cables and antenna.

^{Note 1:  Also provides interface connectivity to other mobile transceivers.}

The PBX and RF Gateway Derby are online and operational.

weather.alertradio.net

 Kansas Weather Site is operational

kansas-weather.blogspot.com

The Maxon SD-170 Series Data Radio is ideal for digital and analog development.   With a GMSK 9k6 modem and FFSK 4k8 modem available as options.   A pair of SD-170 Series Data Radio can be configured as a in-band repeater as well  as a full bi-directional crossband repeater.

Some of the features of the Maxon SD-170 Series Data Radio include:

• 5 / 1 Watt RF Output
• 16 Channels (serial port controllable)
• CTCSS/DCS
• LED Status indicator
• Busy Channel Lock-out
• Battery Save Circuitry

For more information contact:

ResourceOne InfoQuest

Currently the network has the capability to communicate via:

• RF Gateways to;
  • VHF
  • UHF
  • 2.4GHz
  • 5.8GHz
• Public Switched Telephone Network (PSTN)
• Internet Telephone Service (ITS, IPphone, et al)
  • SIP connectivity
  • IAX2 connectivity
• Digital Smart Technologies for Amateur Radio (D-STAR)

For more information about AADN please visit Southeastern Asterisk Radio Networks (SEARN)

2 ) Long range HSMM networks with data/video/voice capabilities. (With products like the Ubiquiti Networks Bullet[ubnt.com] should be able to get some decent range)

3) Low-cost Digital Interface that can plug into any radio with a data port (most new radios have a data port present, plus by regulation {at least for Part 90 equipment} they have to be able to handle at least 4k8 baud data – definitely not high speed, but it lets messaging take place).

4) Compact Rapid Deployment Links (RaDL) based on Asterisk that can be quickly delivered to any location thus providing phone and radio connectivity. ** Come up with a way to do it with the Gumstix Overo boards everything could fit in a radio. Add a Ethernet pigtail on the back of the radio one would have access to local SIP/IAX2 phone capabilities plus the radio could provide long-haul capabilities for at least one call to the outside world. Instant dispatch capabilities with the package too, along with intertie to other radio systems.**

The radio itself would work as a link/remote base anyone in the local network could connect through the LAN/wLAN to the RF side to transmit/receive via the radio itself. Plus they would still have local network capabilities. Since the original gumstix/Asterisk package was able to handle 10 to 15 calls, the new package should be able to increase that by at least (to 15 to 20 calls). Attach another wLAN to the RaDL would create another sub-network as well as capability for a second RF Gateway channel.

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.”

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 conexist 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.

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 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 Acess).

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.

Digital Analog Radio Network

Send In Most Potentially Linkable Exchange

With the diversity of both digital and analog systems available today a way to connect them together is needed.  Through the development of Digital Analog Radio Network (DARN) methods will be presented that complete the interconnectivity and interoperability necessities.

May DARN be found as a way “to mend by weaving thread across a gap” in technology.