New Amateur Logic Episode

Published on Aug 12, 2014

In this episode Peter demonstrates a new microcontrolled component test. George talks all about Dummy Loads. Tommy shows us the new DV Mega Raspberry Pi D-Star Hotspot. And a visit to the K7LWH D-Star Repeater site in Bellevue Washington.

Be sure and watch the whole thing and notice the GREAT prize they are giving away! They also announce our 9th Anniversary Sweepstakes where some ham is going to win the Ultimate Mobile Station.

Amateur Logic Episode 69

Full Duplex: A Fundamental Radio Tech Breakthrough

Image From www.extremetech.com

Could double throughput, alleviate the spectrum crunch

It is generally accepted that we’re fast approaching the limits of what is possible with radio waves, due to numerous technical constraints that have plagued RF-based wireless networks since their inception over 100 years ago. But what if one of those constraints — perhaps the biggest — was blown away?

AM and FM Explained

AM and FM explained by an old Army training film! This is excellent and informative. It is in two parts so be sure and watch them both !

Part One

Cheap Digital Voltmeter from K7AGE

Here is a nice little cheap project for a digital voltmeter. I will be watching for some of these at the Joplin Hamfest!!

'Holy Grail' of battery design achieved: A stable lithium anode

Image From http://www.ecnmag.com/

Full Story Here -- 'Holy Grail' of battery design achieved: A stable lithium anode

Engineers use carbon nanospheres to protect lithium from the reactive and expansive problems that have restricted its use as an anode

Engineers across the globe have been racing to design smaller, cheaper and more efficient rechargeable batteries to meet the power storage needs of everything from handheld gadgets to electric cars.

July Meeting and Lincoln Park

The July meeting of SEKARC was held Saturday and it was a very good one. Bill WBØLXZ brought his project that he has been working on for a demonstration. A 555 keyer plus sidetone paddle. At the coffee on Wednesday he had his schematic and circuit board all printed and by Saturday it was complete! We had a great turnout at Hardee's and I can happily say that I think we are outgrowing Hardee's as the location for our meetings.

QRP - Discoveries and Experiences

By David Keath NØWKZ

As of late, I have been accumulating more experiences, not just with CW, but also with QRP operations. Indeed, a number of recent portable operations were quite instructive for me. What I hope is that by sharing these perhaps, minor details, I might be able to save some other operators the trouble of so much frustration.

Voices of Experience

First, and as always, I think the number one thing I am continuing to find is that the best source of advice and help is Elmer's. Operators with years of experience. This is a source of knowledge that can never be underestimated. Oh, and don't be like me. Don't selectively take advice from Elmer's while ignoring some things in favor of stubborn personal ideas. The object really is to operate. These guys usually know how to help you get up and going. If you need help; ask for it.