NW Digital Radio Blog

NW APRS Summer Gathering 2017

NW Digital Radio team members will be presenting at The Northwest APRS Summer Gathering in North Bend (WA) on September 9th.

Topics to be presented will include:

  • UDRX™ Status Update
  • A Raspberry Pi Based ~1W Transceiver mentioned at the Dayton Hamvention® (Xenia)
  • NetTNC an EMCOMM Appliance
  • UDR-Tracker an APRS® Mobile Appliance
  • ThumbDV™ New SW and Applications

To learn more about the APRS® event, subscribe  to the newsletter.

Presentations will be posted on the web after the gathering.

Note: NW Digital Radio team members will not be presenting at TAPR DCC in St. Louis this year.

UDRC II – Notice of Possible Programming Error

We have discovered that some UDRC IIs have shipped with a EEPROM programmed to identify it as an original UDRC.

Please review the wiki post at https://nw-digital-radio.groups.io/g/udrc/wiki/UDRC-II-EEPROM-Flashing for details on identifying and correcting this error.

Hamvention 2017 – Dayton

We will be at booth 1105 (Bldg. 1 – next to Bridgecom) on Friday and Saturday this year.

We will not be at the Hamvention on Sunday.
We will have a limited number of ThumbDV and UDRC-II units for purchase, and maybe have a little something new to show you (not the the UDRX-440).

DMR Licensing

We get frequent inquiries about using the UDRCTM for DMR. The problem is, DMR requires a license from Motorola, the cost of which is prohibitive for the Amateur Radio market.

We all know of products that seem to indicate that it’s not really a problem, until it is …

PATENT INFRINGEMENT AND TRADE SECRET MISAPPROPRIATION COMPLAINTS AGAINST HYTERA COMMUNICATIONS

MotorolaSolutions

Pi Cases are back in Stock!

The new supplier has shipped cases so we’ll fill all of our backorders this week.

The price has increased to $15 for new orders.

Thanks for your patience.

Pi Cases – Delivery Update

We received the first article from the new supplier and the design needs tweaking so that the tabs will assemble correctly. We have a new sample in process and I’l keep you apprised.

UDRX – Status Report

Just back from Orlando Hamcation. Nice to meet many of our existing customers and chat with some new ones.

The UDRX made it thru initial bring-up and I drove them to Oregon, while Portland was being slammed with snow. Jeremy has completed the updated Drivers and PLD code and shipped the first unit to Dennis for IQ audio and RF path analysis.

No significant problems were found at this stage.

I’ll be  working on the PA and RX/TX switch while Dennis fine tunes the IQ/RF.

I’ve also been working with CMs and it looks like we’ll be be able to meet our production cost goals at this point. There is still ambiguity on the Heat Sink Extrusion and enclosure cost.

I’ll post approximately monthly as we continue to make progress.

Bryan K7UDR

The UDRC-II Enables D-STAR on Many Repeaters

In case you missed the updates on the UDRC Wiki, there are now examples of adding D-STAR using the UDRC-II on many different repeaters:

Universal Digital Radio Controller

Yaesu DR-1X (currently available directly from Yaesu on a special promotion)

Kenwood TKR-750/850

Bridgecom Repeaters (including the 220 band)

Homebrew Systems

Use the message board to share your repeater and hotspot implementations using the UDRC or UDRC-II

If you can get at the discriminator and true FM modulator of a repeater, the UDRC-II gives you a way to add D-STAR.

Pi Cases for the UDRC-II

The Pi cases were designed and supplied by Budd Churchward, WB7FHC. Budd laser cuts the acrylic at a local DIY cooperative here in Washington.

Over the holidays the coop moved and they’re not back on line yet so we are working on alternative suppliers. We should have a first article next week and will be back in stock mid February.

If you have a case on backorder or order one now with a UDRC-II, it will be shipped for free as soon as they arrive.

UDRX Pilot Boards have Arrived

After dealing with component shortages and Holiday schedule, the UDRX pilot boards arrived this afternoon from our assembly house in Renton WA.

The boards now go into the lab for initial bring-up, then they will be split into 3 task groups:

  • SW Driver additions and updates
  • IQ audio and RF path
  • PA and RX/TX switch

There are a substantial number of relatively minor changes to the design, in addition to the major change in form factor to accommodate the switch to the R-Pi 3.

I will provide an update on our progress by Hamcation in Orlando next month, where the pilot units will be on display. There is still significant work ahead, before we can determine if the pilot run can move to production.

Thanks for your patience and support,
Bryan K7UDR

UDRX Assembled PCB

UDRX with Pi and PA