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Finest Hacking and HAM

Category: HAM

Reverse Engineering Radios – ARM Binary Images in IDA Pro

Posted on 2. January 20224. January 2022

In this article I will demonstrate how to start a basic analysis of an ARM firmware image. As an example we will take a look into the widely available firmware of ANYTONE 878UVII radios. The techniques explained in this article can also be used for other ARM based firmware and for images of a wide…

ANYTONE Factory Settings Mode and Serial Communication (USB)

Posted on 1. January 20227. January 2022

The ANYTONE 878UV and most likely most other radios based on the same firmware have a secret factory settings mode. This mode is already know as “full test / self adjustment mode”. Details about it can be found here. This mode allows the a technician to fine tune various settings within the firmware. The currently…

DO0ZA is alive!

Posted on 9. August 202122. August 2021

I am happy to announce that my 2m APRS digipeater and 70cm NPR HAMNet Gateway was approved by the Bundesnetzagentur. It was assigned the callsign DO0ZA. The 2m APRS part is already on air. The NPR part will follow soon. Since I love new and experimental technology, a LORA Aprs iGate is also present at…

On Air from Lithuania as LY/DO1ALX

Posted on 8. August 20218. August 2021

I was visiting the family of my wife last week. As you might guess my wife is from Lithuania. Now after Corona withdraws a bit, we could finally visit her family and this beautiful country again. We haven’t been there for more than 2 years now and this time I took my HAM stuff with…

Building an APRS Digipeater based on a Motorola GM350 and Dire Wolf

Posted on 1. July 20211. July 2021

It all started with my friend DK2HM bugging me about APRS for a while. First I wasn’t really interested since I considered packet to be somehow a old protocol. But after taking a few more looks into the protocol specs and APRS it somehow catched my interest. This was somehow the moment when my digipeater…

Programming the Motorola GM350 on Windows 10

Posted on 11. June 20218. July 2021

Since I am totally into these Motorola devices at the moment I picked up a GM350 and looked into the programming of these devices. It is simpler as expected. The setup is pretty much the same I used for the GM950 models. All you need is a different programming software. You can find the software…

Programming the Motorola GM950 on Windows 10

Posted on 7. June 20217. June 2021

After buying and programming a few GM300 a few weeks ago, I now picked up a poorly looking – but working – GM950. There is very little written about these devices and how to program them on modern computers. So I spend some time to figure it out. Now I am going to tell you…

Analog APRS on ANYTONE AT-878UV and AT-878UVII

Posted on 31. May 202130. November 2021

I recently upgraded my AT-878UV to an AT-878UVII, the most important driver for this was the new feature ANYTONE calls APRS RX. This is basically what it says, the new model is able to finally receive APRS messages. ANYTONE builds very good radios. Sadly they are often misunderstood as pure DMR toys. I have to…

Motorola GM300 DIY Programming Cable

Posted on 30. May 20217. June 2021

I recently picked up a few old Motorola GM300 radios on eBay. These radios are very stable and work well for unattended operations or in repeaters. They are very affordable and carefree. But they are also hard to program, at least if you don’t have the information how it works on modern computer. So I…

(c) 2021 Alexander Pick - DO1ALX/K2API
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