3 results for month: 07/2015

W9HPX Presentation on Amateur Radio Digital Voice Modes

Hopefully you didn't miss the GARA meeting this past Monday evening because we were treated to an excellent presentation about the various types of popular digital voice modes by Charlotte Digital Radio Group member Roland Kraatz, W9HPX!  If you weren't able to attend, or even if you were, you'll probably want to review Roland's slide deck since so much information was presented.  Thankfully Roland has provided us with a PDF copy of the slides, and you can download it here: Be sure to join us for the next GARA meeting on Monday, August 24, when our own Chris Thompson, K4HC, will give a presentation on applying for ARRL awards using both paper ...

Audio Basics for Hams, Part 2 – All About the Pattern

If you had a chance to read Part 1 of this series, you now have a decent understanding of what makes a mic tick and the different types of mics that are in general use.  That's awesome, and it's definitely the information you need as a foundation to get a better understanding about mics and audio.  But as Paul Harvey used to day, here is "...the rest of the story!" We know that as a general rule, dynamic mics are good for higher sound pressures (volumes) and condenser mics provide better clarity, but there's more to knowing which mic to choose than just that.  Audio engineers (and hams, for that matter) need a little more variety in order to ...

Audio Basics for Hams, Part 1!

This week we had a great discussion on our Sunday evening Technical Forum (every Sunday at 7:30pm EST on the 145.150 W4GSO repeater, BTW!) about audio gear that we use to improve the quality of the sound we transmit or receive.  That got me to thinking that it might be nice to put together a series of posts about audio, the types of gear we use to manipulate audio, and other basics specifically related to our hobby.  So here (hear!) it is!  My plan is to divide ideas up into multiple posts so that we can explore the concepts in a little more depth than could be done otherwise.  I don't plan on getting too deep - it's not really necessary to do ...