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ThumbDV™: Ordering is Now Open

Now available from NW Digital Radio, a USB based version of the popular DV3000 AMBE™ vocoder board. The new product is the ThumbDV™ (model number DV3000U) and is available for ordering for $119.95, plus applicable taxes and shipping. Initial shipments for the ThumbDV™ are projected for the 3rd week of December, however, we cannot guarantee the shipment date until the production run is completed.

AMBE 3000 USB ThumbDV™(Model DV3000U)

ThumbDV™

There are a limited number of ThumbDV™ units available in December, so get your order in early. We will do our best to ship in time for Christmas (US/Canada), pending any production delays. NW Digital Radio will be closed December 18th to the 29th.

Our DV3000 product, which is designed to be the vocoder for our forthcoming UDRX-440 digital radio, also acts as a popular add-on board to the Raspberry Pi single board computer and is now deployed in 25 countries around the world. This capability allows network communication through the Internet to the global D-STAR network using a computer with a microphone and speakers. The ThumbDV™ makes this functionality available on Linux, Windows, and Mac OSX* computers through a USB port in a thumb drive/dongle package. We invite developers to extend use to other platforms.

Current products in the AMBE USB space use the older AMBE-2000 series of vocoder chips which do not support additional digital voice radio standards such as DMR, System Fusion, dPMR, NXDN, P25 Phase 2 HR, and others, which can be addressed by the newer AMBE-3000 series vocoder chip as found in the DV3000 and ThumbDV™, pending further 3rd party software development.

Press Release

ThumbDV™ Resource Page

* DummyRepeater performance is currently not satisfactory on OSX and ircDDBGateway has not been ported. We do not recommend purchasing the ThumbDV™ for exclusive use on Mac OSX at this time.

AMBE is a trademark of DVSI.

AMBEserver (DV3000) Daemon Source

The current source for the AMBEserver / AMBEserverGPIO can be found at AMBEserver Daemon Source

Pacificon 2014

George, W5JDX,  from AmateurLogic.TV came by and interviewed John, K7VE, about our current and soon to be released products. Starts at 48:50

Configuring ircddbGateway and dummyrepeater on Raspberry Pi

This blog post has been moved to it’s own page

DV3000 Qualified on the Raspberry Pi Model B+

The DV3000 has been tested on and works with the Raspberry Pi Model B+

Note placement of the DV3000 on the 40 pin header. The rest of the procedure is as outlined for the Model B

Adding a Display to AMBEServer

An AMBEServer provides a great platform for supporting applications like DummyRepeater, which need a platform to convert audio to AMBE and back again.

In previous blog posts we have discussed using the AMBEServer with DummyRepeater, but have always used a display on another computer or HDMI monitor to accomplish this task.

I decided I would like to see if I could get a Raspberry Pi display attached to an AMBEServer for user interaction without the need for a remote computer display or HDMI connected monitor.

I decided to try the Adafruit Pi TFT as a display.  Here are the early results.  After receiving the PiTFT, I followed the assembly instructions and software install instructions. I used the deb file method rather than loading a new image.

The display came right up.  Here are the results.

adafruit-tft-crop

DummyRepeater display on PiTFT

 

Stacked DV3000 and PiTFT on Raspberry Pi

Stacked DV3000 and PiTFT on Raspberry Pi

 

End view of DV3000 and PiTFT on Raspberry Pi -- Need supports

End view of DV3000 and PiTFT on Raspberry Pi 

 

As you can see this all stacks up nicely, I just need to come up with a support and a case to hold it all!

The current UI isn’t optimized for the 320×240 display yet, but as you can see the touch PTT/Transmit button is clearly visible and the TFT touch function of the board works.  The board also supports 4 buttons that UI designers could use for a menu operated or similar system.  Additionally, adding a USB or Bluetooth keyboard and mouse are supported.

 

DV3000 in Japan – Portable DummyRepeater

Note from our new friend Satoru, JA1SCW, on Olive Island in Japan
PortableDR

Portable DummyRepeater

Since I started D-Star about two years ago, I have been looking for a solution for a portable rig like the photo which consists of Raspberry Pi, DV3000, sound card, software, WiFi, battery and smartphone. You may use them as a friend of your daily exercise, walking!!I made hotspots and node adapters in total six to seven sets, but this is the very first ever set which is capable for accessing the networks supported by ircDDBgateway software. At this moment of time, only remaining issue is PTT as I prefer PTTing by using a speaker-mic rather than hitting a PTT button on a smartphone screen.I will be soon 70 years young! hi This requires skills for a soldering and programming but hope everybody could overcome difficulties you may be faced to. Thanks to a great product, DV3000 and people contributed for launching it.Very best 73s,  JA1SCW@ Olive Island in JapanThanks,  Satoru (Radio Name: Steve)

Update

GPIO PTT

Photo of Portable DummyRepeater w/PTT

Based on information from G8BPQ, Saturo was able to simplify the Portable DummyRepeater and remove the external USB hub which supported a serial connector to get PTT.  Now his PTT goes directly to Pin 3 on the Raspberry Pi.

DummyRepeaterDV3000-2

Block Diagram

 

DR-DV3000

Portable Dummy Repeater with DV3000

DV3000 Analog to D-STAR Bridge

VK5ZEA, Michael, of Port Lincoln, Australia treats us to another of his wonderful YouTube videos.

Using a Raspberry Pi, DMK URI, DummyRepeater and analog radio, Michael demonstrates bridging analog FM and D-STAR.

Preparing the Raspberry Pi for DV3000 Applications

See the basic installation instructions for the DV3000 and the dv3000d daemon in the document DV3000 – AMBEServer

Note: All production DV3000 units are configured for 230400 bps and do not have jumpers. 115200 bps is insufficient, but the board can be easily modified to add jumpers to configure baud rate, see the schematic at in the datasheet.

The dv3000d is the basic building block for the first set of applications for the DV3000.  It is a server which receives PCM audio over a UDP socket and returns AMBE or receives AMBE and returns audio.

DummyRepeater from the Yahoo! pcrepeatercontroller forum can access the daemon either locally or over a UDP/IP link. DummyRepeater in conjunction with ircDDBGateway will allow you to link to reflectors and repeaters around the world.  See notes.

You will also find utilities to convert between ‘wav’ and ‘dvtool’ or ‘ambe’ files in the ircDDBGateway file AMBETools.

 

UDR56k becomes UDRX

Press Release
Friday Harbor, WA

NW Digital Radio

Universal Digital Radio Name Change to UDRX-440

NW Digital Radio has renamed it’s forthcoming digital radio platform. Since its inception, the Universal Digital Radio was designed to be a multi-application, multi-protocol, and multi-mode digital radio platform.

When announced at Hamvention® 2012 , the radio design focused around a high integration “radio on a chip” platform that provided both the RF section as well as integrated modems. The selected device proved to be somewhat limited and did not meet the high expectations of the design team and was later abandoned in favor of a modular design that separates the RF and modem stages.

The new design provides an I/Q interface for detection and modulation of the RF signal. This affords maximum flexibility for a software defined modem system, providing a variety of modulation choices at varying data rates, thus freeing the radio from the fixed modulation and data rate choices of the earlier design.

When the radio was first announced it was targeted to a maximum data rate of 56 kilobits per second, based on available modulation choice and the limitations of the US regulations for amateur radio on the 70 cm band. The model name of UDR56k-4 was chosen to reflect this set of specifications. Now that the design allows for additional modulation choices, higher data rates are available within the specified bandwidth and, along with proposed rule changes before the US Federal Communications Commission, has prompted NW Digital Radio to increase the data rates available on the Universal Digital Radio platform.

The company re-opened the naming of the product, seeking input from its growing user interest group, and has adopted a new naming convention. The first radio design is now designated the UDRX-440. This model is a 430-450 mHz digital radio with integrated software defined modems, protocol engine, and Linux application platform.

NW Digital Radio is currently accepting order commitments from individuals who participated in the Q2-2013 pre-order process.

Confirm

Ordering will be opened to the general amateur community in late Q1 or early Q2-2014 with delivery anticipated in mid to late Q2.

John D. Hays
Director of Marketing