136 results for author: Scott Toth

Audio Basics for Hams, Part 6 – All About EQ

Now that you have a good grasp on audio routing, it's time to move onto a more subjective topic, but one that will probably be one of interest for most people: equalization.  Equalization is the ability to change the tonality, or sound, of an audio source by adjusting the relative strength of various frequencies.  Before we get into this too deep, there are a couple of things that should be understood first: 1) EQing a sound isn't the only adjustment that can be made to alter how something is perceived by the listener, and 2) there are various ways to adjust EQ without resorting to a piece of equipment to do it. Before we get into those two ...

Audio Basics for Hams, Part 5 – A Few Suggestions, and Signal Routing, Part the Second

If you've hung around all of the previous parts of this series, you're probably starting to understand that getting a handle on audio is a little more complicated than plugging things up and hoping for the best.  Getting things setup properly and working well takes time and experimentation, but it also takes knowledge and patience.  With that in mind, this seems like a good time to take an interlude and make a few suggestions before before we jump into more mixer ideas.  As I mentioned previously, these are my opinions, but they come from a decent bit of experience and a hope that they'll help you make quick progress. If you decide that you ...

Audio Basics for Hams, Part 4 – Signal Routing

While it's perfectly fine to read each article a la carte, if you haven't had a chance to look at the previous articles about audio basics, it would probably behoove you to go take a gander at them when you have a chance.  :)  I'm explaining concepts all the way from the sound you make in the air with your mouth, through the audio mixer, and finally into your radio, so some of the earlier articles will be helpful for you to understand as the ideas progress.  If you haven't been to them thus far, here are the links for your reading pleasure: Audio Basics for Hams, Part 1! Audio Basics for Hams, Part 2 – All About the Pattern Audio Basics ...

Audio Basics for Hams, Part 3 – Signal Chain

If you've read through the first two installments, you're pretty much an expert in microphones now :) .  I think it's time to move up the audio path a little bit and start getting into ways you can route and process your audio.  There's a good bit to this, so no doubt it will take a few more posts to get through it all, but I feel confident that it will be worth it in the long run.  And please keep in mind that this is called "Audio Basics" so I don't intend on going into all of the nitty-gritty details that more advanced engineers might like.  Sorry! A microphone needs to plug into something, right?  If you're anything like me, you love wires ...

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 ...

13 Colonies Special Event

Now that everyone has survived Field Day it's time to set our sights on the next event- the 13 Colonies Special Event Stations!  If you've never worked this special event, it's a great time that comes with a fun reward at the end.  The event is in honor of Independence Day and the birth of the Republic. Starting Tuesday, June 30 and running through Sunday, July 5, there will be a total of 15 special event stations on the air on HF (and, in the case of Wm3PEN, on D-Star!).  There will be stations in each of the original 13 Colonies, and two additional stations: one in Philadelphia, and one in Durham, England.  The goal is to work all 15 statio...

Get on the air this weekend!

Did you know that you can talk to people in other parts of the country, or even other parts of the world, without having your amateur radio license?  You can!  You just need to have an amateur give you a hand and operate the station for you.  There's an awesome opportunity this weekend to do just that!  Come out to Tannenbaum Park in Greensboro on Saturday, June 27 or Sunday, June 28 and visit our GOTA (Get On The Air) Station that we'll have setup for field day.  Don't know where Tannenbaum Park is?  Click here for a map. We promise that you won't be disappointed with the experience, and the first 15 people to make 20 contacts at the GOTA ...

ARRL June VHF Contest This Weekend

Here is a contest that's open to all radio amateurs, regardless of license level!  If you've never had a chance to participate in a contest because you're a Technician or because you don't have space for HF equipment at your QTH, this weekend's VHF contest is your chance to try your hand at contesting.  According to the ARRL website, the objective of the contest is: To work as many amateur stations in as many different 2 degrees by 1 degree grid squares as possible using authorized frequencies above 50 MHz. Foreign stations work W/VE amateurs only. It's kinda like WAS on steroids since there are far more grid squares than states and because of ...