Leo Victor Maurer

Leo Victor Maurer

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Adding and Optimizing an External Antenna to Your Two-Way Radio : Part 1 – Choosing an Antenna

Adding and Optimizing an External Antenna to Your Two-Way Radio : Part 1 - Choosing an Antenna - Code Green Prep

Arduino Breathalyzer Microphone connecting

The breathalyzer microphone is a system for the inconscpicuous collection of blood-alcohol content level data sets.

Arduino SMART FM OLED RADIO by pat007 - Thingiverse

Arduino SMART FM OLED RADIO by pat007 - Thingiverse

circuit-breaker.jpg

circuit-breaker.jpg

Cockcroft–Walton generator - Wikipedia

Cockcroft–Walton generator - Wikipedia

PSDR  -  The PSDR is a completely stand-alone (no computer is needed), compact, Portable Software Defined Transceiver (hence the name, sorta). Originally designed for backpacking use by Ham Radio operators. It includes complete coverage up to about 30Mhz (plus 144Mhz), it has a 168Mhz ARM processor, color display, and an innovative interface. Vector Network Analysis (which includes antenna analysis) and GPS functions are included. The entire design is Open Source.

The PSDR is a completely stand-alone (no computer needed), compact, Portable Software Defined Transceiver (hence the name, sorta).

G7DDN Homebrew 40/80m QRP set

Club member Chris has been busy with his soldering iron already this winter, as the photo shows.

Cheap Wireless device to Control Arduino from anywhere in the world

stands for DUAL TONE MULTIPLE FREQUENCY , in which we are going to use Mobile phone to make its as a wireless device, it works on the frequency which we generate on keypad of caller phone.

Binnenshuis fietspompantenne 2m-70cm

Binnenshuis fietspompantenne 2m-70cm

Dave Richards AA7EE

Dave Richards AA7EE