Tag Archives: DMR

FreeDMR is a DMR Network for Amateur radio users around the world

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On the 9 November 2020, the birth of a new way of working with DMR was born.
A network name was devised and was called FreeDMR.
FreeDMR is the freedom for Repeater, Gateway Keepers and some Hotspots to have full control, instead of being told what has to go where.
We look forward to a great and bright future.

FreeDMR is a DMR Network for Amateur radio users around the world.

FreeDMR is currently looking for OpenBridge connections to connect to a rapidly growing system.
Open Source is here! FreeDMR – Open networking – Reaching out to the World.

Some features include:
Client configuration sent via Protocol Options line.
Dial-a-TG. All talk groups shifting via Private Call on Slot 2.
Voice idents. The repeater’s or hotspot call-sign is (spoken) every 15 mins.
Enhanced OpenBridge via Improved bridge protocol.
Loop detection & handling on the FreeDMR Network.
More features to come.

The FreeDMR Server.

The new system is derived from HBlink and is fully-open source and available on GitHUB. The server software allows the implementation of features as we would like to see them, making the software completely customisable to your needs. This also allows the response to issues and bugs more effectively. This system is bridged to other Servers, providing a frontend system with enhanced functionality. It also enabled repeaters to be able to communicate even if a Server upstream is down. An overview of the added functionality is below. Note, all of this functionality is optional and configurable.

FreeDMR UK.

FreeDMR UK (The UK Network)

Enhanced Talk Groups (dial-a-tg)

Implementation of an enhanced version of a low level talks group, including all of the voice announcements, timeouts etc. The confusing numbering used for the old reflector system (TG9) is obsolete. Instead, you can simply manual-dial a private-call to any talk group number to have it routed to Talk Group 9 on Time Slot 2 on a FreeDMR repeater. This also works on Hotspots if you decide to use it. There is control of the timer and fallback to the default Talk Group (Reflector) as before. Another abbreviation of a Enhanced Talk Groups or Reflectors as they were known is “Dial-a-TG”.

Single mode.

Only allows a single Talk Group to be routed to a Time Slot on a repeater/hotspot at one time, whilst the Time Slot is active. Even if several static Talk Groups are set up on the slot. As soon as a Talk Group is keyed up, only that single Talk Group is routed to the Time Slot until either the timer expires or another Talk Group is keyed up, which then replaces the first one. This is similar to Hotspot behaviour on other networks. This works even between Dial-a-TG (TalkGroup 9) and other TalkGroups.

Voice idents.

Optionally, (set in Options) a 15 minute voice ident in DMR can be set on Time Slot 2. The repeater’s or hotspot call-sign is (spoken) “sent” via “All Call” for optional voice ident. “This is CALL-SIGN FreeDMR”

Things it doesn’t do.

Currently we have not implemented:

  • Private calls that transit the network (PC on the current repeater still works)

Accreditations.

FreeDMR Server Software by Simon Adlem G7RZU.
Dashboard Monitor by Waldek SP2ONG.
Options Calculator by Jim Nessen K6JWN.
Some images and FreeDMR Network logo’s by José Melo.

Paul L | MØFOX | Chesterfield UK | IO93HE | Icom IC-7800 | Yaesu FT-980 | FT-902DM | WAB SK46

Hytera launches latest DMR handheld radio PD985

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Hytera, a world leading solution provider of Professional Mobile Radio communications, has launched its latest DMR (Digital Mobile Radio) handset, the PD985, the flagship professional device at the top of a strong DMR portfolio. The PD985 offers an exceptional audio experience through noise cancellation technology, as well as boasting new features including full duplex calls (*) recording capability via Micro SD card (*) Bluetooth 4.0 for audio or data (*) and single frequency repeater to increase coverage(*). The PD985 will be available in UHF (350-527Mhz), with a VHF version to follow in 2017.

“We are proud to announce the launch of the PD985” said G.S. Kok, Senior Vice President of Hytera. “The PD985 is a significant addition to our existing DMR radio portfolio. We have succeeded in adding a series of cutting-edge innovations and designs into this new model to make it a full-featured radio to satisfy our customers’ increasing demand in terms of functionality and user experience.”

The addition of the PD985 positions Hytera with the most complete DMR radio portfolio to meet diversified requirements, from simple, reliable and cost-effective handsets (PD3 and PD4 series) to rugged and feature-rich solutions (PD5 and PD6 series), up to the high-end, professional systems radios (PD7, PD9 and X1 series). The whole portfolio offers display and non-display, GPS and non-GPS, UHF and VHF versions to allow customers to select the best handset for their daily operation and mission critical scenarios.Paul L | MØFOX | Chesterfield UK | IO93HE | Icom IC-7800 | Yaesu FT-980 | FT-902DM | WAB SK46

Motorola Solutions Files Patent Infringement Trade Secret Misappropriation

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Motorola Solutions Files Patent Infringement and Trade Secret Misappropriation Complaints Against Hytera Communications

Patent Infringement and Trade Secret Misappropriation Complaints Filed in U.S. District Court

Motorola Solutions is Committed to Protecting its Valuable Intellectual Property Against Illegal Infringement and Copying

CHICAGO – March 14, 2017 – Motorola Solutions, Inc. (NYSE: MSI) (“Motorola Solutions” or the “Company”) today announced it has filed complaints in the U.S. District Court for the Northern District of Illinois against Hytera Communications Corporation Limited (SHE: 002583) (“Hytera”) of Shenzhen, China. The complaints assert that Hytera’s two-way radios, base stations, repeaters and dispatch systems, as well as its related commercialization and sales activities, are infringing patents owned by Motorola Solutions and utilizing stolen Motorola Solutions trade secrets.

Motorola Solutions believes that Hytera is intentionally infringing its intellectual property and misappropriating its trade secrets, which has enabled Hytera to compete unfairly by bypassing investment in innovation.

Mark Hacker, general counsel and chief administrative officer of Motorola Solutions, said, “Motorola Solutions has a long and distinguished track record of developing industry-leading products and technologies, reflecting our significant investments in research and our commitment to innovation. We are proud to have built an extensive portfolio of more than 4,000 patents, including the patents at issue in these lawsuits, which were developed by Motorola Solutions’ world-class engineers.”

Mr. Hacker continued, “We believe it is clear, and we are confident the Courts will agree, that Hytera’s product portfolio and marketing materials are based on Motorola Solutions’ proprietary intellectual property. Brazen copying and blatant, willful infringement of this sort create an unfair playing field and threaten the industry’s ability to innovate. We will use every means available to vigorously defend the Company’s valuable intellectual property, while continuing to drive innovation and technical excellence for the benefit of our customers around the world.”

Hytera’s illegal behavior was assisted by three engineers who resigned from the Company to join Hytera, where they had key roles in developing Hytera’s infringing products using misappropriated Motorola Solutions technologies and continue in senior-level positions today. In the period leading up to their resignations, through a series of serious misrepresentations and carefully planned illegal acts, these engineers maliciously accessed, downloaded and transferred more than 7,000 highly confidential files related to Motorola Solutions’ technologies, including confidential technical, marketing, sales, legal and other types of trade secret materials. Subsequently, Hytera began illegally manufacturing and marketing a line of products and technologies containing technologies invented, designed, developed and in some cases patented by Motorola Solutions.

Motorola Solutions is seeking to enjoin Hytera’s continued infringement and misappropriation by stopping its sales of key products in the United States and importation of those infringing products into the United States. The Company is committed to ensuring that its intellectual property rights are protected around the world.Paul L | MØFOX | Chesterfield UK | IO93HE | Icom IC-7800 | Yaesu FT-980 | FT-902DM | WAB SK46

DV4home DStar DMR dPMR NXDN C4FM

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dv4homesmall img_2153

dv4home

DV4home – Shipping again beginning of December

The DV4home is another member of the successful family of DV4 products. As usual it supports all digital modes, while simplifying and extending the supported functions. While it acts as a “home” for the DV4mini it can be easily used mobile or portable as well. It is a stand alone unit that does not need a PC to operate. (DV4mini not included)

(automatic update of firmware via Internet)

There are 2 versions available, the DV4home and the DV4home compact.

DV4home

The DV4home uses the same microcontroller platforms as the DV4home compact, but adds 2 AMBE3000 chips, a microphone and a speaker connector to the unit. There is a built-in speaker and the microphone is included.

These components allow these additional functions:

  • Direct Internet transceive mode without a DV4mini by using the microphone and the external speaker. This is an economical alternative if no local wireless signal is needed. In this mode the DV4home supports D-Star, DMR, dPMR, NXDN (and later C4FM via software update)

  • Dual mode support: even without a DV4mini inserted the unit can be simultaneously connected to a D-Star and a DMR reflector, using 2 separate speakers to play the respective audio streams.

  • Transceiver mode connects a D-Star or DMR radio via a plugged in DV4mini to a reflector.

  • Conference mode requires a DV4mini inserted into the unit and allows to use the built-in microphone/speaker connectors and the RF connection through the DV4mini to a DMR or D-Star radio. This mode works in D-Star and DMR.

  • Transcode mode allows to use a digital radio in one mode and connect to a reflector in another mode. Use your D-Star radio to try out DMR! The following conversions are supported:

    • D-Star → DMR

    • DMR→ D-Star

  • Later via software update:

    • All –>. Fusion (C4FM)

    • Fusion (C4FM) → All

  • DMR/D-Star Bridge mode allows to interconnect DMR and D-Star reflector rooms using the licensed DVSI AMBE chips. This mode bears the risk of creating loops in the network, therefore a free license key is required which also helps that the installations can be supported by the network administrators to assure a flawless integration.

  • IPSC2 and DMRplus bridge permits the connection between DMRPlus.

Interfaces:

Power

9-15V, 1A, barrel connector 5.5/2.5mm

Ethernet

RJ-45, 10/100 MBit/s

Speaker

Stereo 3.5mm for simultaneous dual mode  operation

Microphone

DTMF, Electret with modular connector

DV4mini

Integrated shielded compartment with USB connector

USB

WLAN or LTE stick for wireless internet connectivity

Line out

3.5 mm 1 Vss

Display

256 x 64, 4 lines OLED

Temperature range:

-40C – + 85C

Paul L | MØFOX | Chesterfield UK | IO93HE | Icom IC-7800 | Yaesu FT-980 | FT-902DM | WAB SK46

DV4mobile digital triband transceiver LTE

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dv4mobile

DV4mobile – first all mode digital tri band transceiver plus LTE with GPS

 

  • The DV4mobile supports all digital modes: no need for multiple radios, saving space and money.
  • It is programmed from the cloud: no need for programming and updating code plugs.
  • It is a software defined radio: future modes are just an update away.

 

The DV4mobile is another member of the successful family of DV4 products.

It operates in the 2 meter band, at 222 MHz and the 70cm band.

All modes are supported: C4FM, D-Star, DMRplus, dPMR, P25 (NXDN later via software update) Voice over LTE and of course, FM!

C4FM both narrow and wide band modes

D-Star (DCS,CCS,REF,XRF,XLX)

DMRplus (TS1 all / TS2 Reflectors or talkgroups)

dPMR(All Systems and codecs transparent mode)

P25(Phase 1 Only and all NAC transparent mode)

FM with PL and DCS tones and RDS for call sign transmission in the background

DV4LTE is a new voice over LTE mode that connects the radio to the reflector using an LTE connection.

The LTE modem connects to the CCS7 reflector system supplying  codeplugs in the cloud, there is no need to program codeplugs any more. Any changes in the network, be it on the reflector, repeater or user side are instantly updated. Private settings such as local channels can be maintained on the web.

After a reset or with a new radio all settings are downloaded after entry of the CCS7 number.

When no repeaters are in range, the radio can revert to LTE (DV4LTE) for reflector connection (i.e. between metropolitan areas)

 The GPS module provides location data for APRS and automatic display of repeaters in range. When a repeater is selected, frequency and mode is already in the radio, no programming!

Simplex repeater mode

 The DV4mobile can also be used as a dual band, dual mode simplex repeater.

For example you can use it as a D-Star repeater on 2m and simultaneously as a DMR repeater on 70cm while conducting  FM QSO on 222 MHz (USA version only)

 The extreme temperature range from -40C to +85C ensures functionality even under the most extreme conditions

Frequency range (USA)

144-148 MHz, 222-225 MHz, 420-450 MHz

Output power

2 x 20W simultaneously

Modes

FM, D-Star, C4FM, DMR+,,dPMR,P25*,NXDN*, DV4LTE

Microphone

DTMF, Electret with modular connector

Antenna

N

Speaker

3.5 mm, stereo 2 x 4W at 8 Ohms

Connectors via adapter cable and 2 x 12 pin connectors:

Ethernet

RJ-45 via adapter 10/100 MBit/s

serial

USB

External Monitor

HDMI

Internal display

240 x 320 pixel, 262k color

Power

10.5-15V, 5A

GPS

Antenna combined into main antenna

Temperature range:

-40C – + 85C

 *  via license and software upgrade
All data is preliminary and subject to engineering changes.
Made in USA  

Paul L | MØFOX | Chesterfield UK | IO93HE | Icom IC-7800 | Yaesu FT-980 | FT-902DM | WAB SK46