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GD-77 8M byte memory hardware hack
Just a quick post on a hardware hack that’s possible, but quite difficult, on the GD-77 to increase the internal memory from 1M bytes to 8M bytes The GD-77 memory consists of these 2 chips (Photo...
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Open-GD77 CPS
Another quick post, mainly to get some feedback. Now that the open source GD-77 being written by Kai, DG4KLU, is progressing and can receive on both FM and DMR. One of the other things on my, rather...
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Designing a CPS data structure
Work to develop a new CPS for DG4KLU’s open source GD-77 firmware is progressing rather slowly, because I’ve had other things to do, including fixing some bugs in the firmware. But after discussing...
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DMR Talker Alias
This story starts a few days ago, when the Australian DMR MARC based network temporarily cut off access to hotspots. Like many other people I switched to using Brandmeister while the DMR MARC server...
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Beware dodgy Vector Network Analysers
Just a quick post about a bad experience with buying a Vector Network Analyser from AliExpress. Update 10th July. Thanks to everyone who has commented. I’ve updated the information in the post and...
View ArticleChinese made radios becoming difficult to source in Australia
I’ve noticed over the last couple of months that its becoming increasingly difficult for Amateurs in Australia to buy a whole swathe of Chinese made radios. For example on AliExpress, on some radios,...
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Announcing – OpenGD77 firmware – Phase 1
I’m extremely pleased to announce that the open source firmware for the GD-77, being developed by Kai DG4KLU and myself, has now reached its first major milestone, and we’ve decided to call the...
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Help needed the OpenGD77 “Hotspot mode”
Guys The OpenGD77 project is massive undertaking and if possible I’d like to get some help from the readers of blog on a wide variety of related topics. Top of my Help wanted list is for the Hotspot...
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GD-77 Community CPS – initial OpenGD77 support features
Just a quick post for anyone testing the OpenGD77 firmware I’ve now finished adding some initial support for the OpenGD77 into the Community CPS, and I’ve created a special version of the installer for...
View ArticleBlog offline due to server quota problems
I woke up this morning to find a load of emails from my hosting company, Hostgator, letting me know that my entire hosting package had been locked because it had gone over its CPU usage quota....
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OpenGD77 – Hotspot mode
For the last 6 weeks, I’ve been intensively working on the Hotspot mode as part of the OpenGD77 firmware, and it is now finally with the Beta testers in Australia, Europe and the USA. Note. Currently...
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OpenGD77 Hotspot PiStar update
The configuration screen having a new Modem option of OpenGD77 DMR hotspot (USB) And the Dashboard now displays the name and the firmware version A note to the Beta testers. Your versions won’t...
View ArticleOpenGD77 Hotspot mode general Beta release
I think the OpenGD77 Hotspot mode firmware is probably stable enough for more people to Beta test it, so I am making it publicly available for download via this link on my blog...
View ArticleOpenGD77 User Guide
OpenGD77 User Guide (Alpha version) is now available as a PDF file for download Thanks to Alister G0NEF for getting the ball rolling by creating the first draft, which has now been extensively...
View ArticleOpenGD77 Hotspot users please update to the new version
While doing some testing for VK7ZJA this morning, to track down a bug in the official Anytone firmware, I managed to cause the OpenGD77 Hotspot being used by Clayton VK7ZCR to lock-up it was...
View ArticleOpenGD77 firmware update
I’ve made a few small changes to the OpenGD77 firmware and uploaded a new version to the daily builds folder on Github (see the link below) There is a fix to prevent totally incorrect power levels...
View ArticleOpenGD77 Hotspot bug fix to support BlueDV
Just a quick post for anyone using the OpenGD77 as a Hotspot connected to BlueDV on the PC I’ve resolved the problem where BlueDV set both the frequency and power of the hotspot to zero when the “DMR”...
View ArticleGD-77 Community CPS installer now includes OpenGD77 Comm driver
Jet another quick post with an update, but this time to the GD-77 Community CPS I’ve modified the GD-77 Community CPS to include an option to include the Windows Comm port driver needed when using the...
View ArticleProblems with the latest GD-77 Community CPS installer
A number of people reported that the latest GD-77 Community CPS installer had a virus in it. To cut a long story short, this is almost certainly a false positive, but I appreciate that its a big risk...
View ArticleSome progress with the OpenGD77 Tier 2 functionality
Now that the Hotspot mode functionality is relatively stable, I’ve switched my efforts to supporting DMR Tier 2 in the OpenGD77 firmware. Kai (DG4KLU) told me a couple of months ago, that he had been...
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