Monthly Archives: June 2013

Partsim: Circuit Simulation Made Easy

I came across Partsim, a free and easy to use circuit simulator that runs in the web browser, and would definitely encourage you to check it out if you’re looking for a tool to design and simulate circuits.   It … Continue reading

Posted in Commentary, DIY, Electronics, Ideas, Internet | Tagged , , , , | 1 Comment

Colorful NTIA Poster of U.S. Frequency Allocations

This great infographic looks like it could really help me figure out who’s talking on all of those data channels I pick up with my RTLSDR. Click through for the full size, a 3.5MB JPEG.  You could also get your … Continue reading

Posted in Radio, Technology | Tagged , , , , , , , , , , | 1 Comment

Overloaded 1931 Transformer [Fried Electronics]

I’m working on a 1930/31 Westinghouse WR-8 Columnaire clock-radio which had a bad transformer. The filter capacitors failed and shorted the high-voltage secondary, burning it open and causing a lot of heat and melting.   The replacement is a General … Continue reading

Posted in DIY, Electronics, Projects, Radio, Vintage | Tagged , , , , , , , , | 3 Comments

Listen to Ham Radio Online with the ETGD WebSDR

I just discovered the fascinating Wide-band WebSDR operated by the amateur radio club ETGD at the University of Twente in the Netherlands. PA3FWM built a fascinating wideband SDR using a Xilinx FPGA, high-speed ADC and gigabit Ethernet interface to receive … Continue reading

Posted in Internet, Radio | Tagged , , , , , , , , , , , , | 1 Comment