Category Archives: electronics

New AnyLocker- radio reference locking board

Posted on May 12, 2018 by glenenglish

Project sources, schematics (in PDF also), and a readme https://github.com/glenenglishgithub/Locker-4 Recent changes : Added LVDS diff receivers for better performance and more sensitivity at low frequencies. Modified input amplifier to have better midband gain. change to 2 layer PCB, 0603 … Continue reading →

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New digipeater for Mt Ginini VK1RGI

Posted on January 3, 2018 by glenenglish

The performance of the VK1RGI packet digi on 145.175 MHz was clearly degraded on its best, or capability, and so it has been replaced.. The original install was a 1990s TNC2 and a FM-828 PMR radio.  FM828s make good split … Continue reading →

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RF check of QYT KT-8900R Chinese origin Dual bander S/N 1608181253

Posted on January 2, 2018 by glenenglish

A friend gave me this radio to evaluate just how clean or dirty this low cost ($100) 146 / 440 MHz 25W mobile dual bander might be. The answer is pretty bad. It has a similar in-sub band spur output … Continue reading →

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Ryzen7 and Xilinx Vivado and B350+

Posted on November 4, 2017 by glenenglish

I’m putting a Ryzen system together for evaluating the AMD work. It’s important to support the Intel competition. My system is a 1700  on a B350+ Asus , 128GB M2 SSD, 4 xGB DIMMs 2400. 8GB? this is a cheap … Continue reading →

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