Locality Switch

Being a fairly small and somewhat closed industry around the world, I’ve found it hard to find some good online resources to help me as a broadcast technician. On top of that, there aren’t any university courses specific to radio engineering, but that’s another story.

However, there are a couple of resources I’ve found around the place which may be of some help. Here’s a few:

Radio Magazine – radiomagonline.com

This free online magazine focuses on radio technology, with a particular focus on the USA markets. It has reviews and tips about every bit of radio equipment imaginable, stories on studio builds, and also an “Engineer’s Handbook”. I’ve always found this site to be very informative and enjoyable to read.

The Broadcaster’s Desktop Resource – thebdr.net

Although all of the articles are in PDF format and require me to download them, The Broadcaster’s Desktop Resource publishes easy to understand articles on a variety of different topics relevant to radio techies.

This Week in Radio Tech (TWiRT) – thisweekinradiotech.com

I was pointed towards this podcast only yesterday. As I write there’s only one episode available, but apparently it will become a weekly thing. That’s good, because the first episode was excellent! It’s hosted by Kirk Harnack, who works for Telos/Omnia/Axia, and even though I’ve only spoken to him through a couple of emails and then heard him on this podcast, he is a very knowledgeable guy. Also co-hosting the show are Tom Ray are Chris Tobin.

It is said you learn something new every day, and today most of my learning came from this podcast. One of the things of interest to me was the EAS system, which is a way of broadcasting emergency messages simultaneously through a group of stations in a geographic zone. I wasn’t aware such a system existed in the USA, but now that I do know, I’m wondering why we don’t have a similar system out here.

Audio Over IP: Building Pro AoIP Systems with Livewire by Steve Church & Skip Pizzi

Okay, this isn’t really a online resource. Hey, I haven’t even read it yet! But I have been promised a copy from the great folks at Axia, and I can’t wait to get a hold of it and read it cover to cover (several times over, I’m sure!). Not having read it myself, here’s a description from Amazon:

Position yourself at the forefront of audio and broadcast studio technology by learning audio over IP. You will gain knowledge of IP network engineering as it applies to audio applications, and then progress to a full understanding of how equipment built on Ethernet and Internet Protocol are used in today’s audio production and broadcast facilities for the transporting, mixing and processing of pro-quality audio. A chapter on integrating Voice-over IP telephony (VoIP) to pro-audio and broadcast facilities is also included.

Radio While Papers – broadcastpapers.com

I must admit, some of the papers available from Broadcast Papers can be very full on, in terms of writing style and content. They can also be very biased towards particular products, as many of these papers have been written by representatives from particular companies. None the less, there are a few good tips to be picked up and some new things to be learned.

The Product Manuals

There is a lot to be gained from reading the manual for different products. Some manufacturers of pro audio gear put tremendous effort into making their manuals informative and very useful. Better still, many are available on the internet. Some of the manuals I have enjoyed are from Axia, Behringer, Comrex, Sonifex, Tieline.

The best manuals not only explain the actual product, but provide background information which helps you understand why things work a certain way.

There we have it, a few resources we have in regards to radio technology. They’ve all been useful for me, and I hope that by sharing them here, you may find something new. If you know of any other handy resources, please post them in the comments below, or email them through to me.

During work experience, I was able to get very familiar with the Axia Audio-over-IP Studios. From my knowledge, there aren’t any that many stations using Axia studios, and I don’t even remember seeing them at SMPTE09, so their choice to invest in this brand was interesting to me.

However, there was a very valid reason they chose this brand over, say, Logiteck or Klotz. With either of these alternate brands (and others, I believe), the audio is all connect directly into the studio engines via I/O cards.

What happens if you have an audio source which needs to be used in multiple studios? You can access the audio over the network no matter what studio it is connected into, but if the studio with the audio for that feed connected into it needs to be brought offline, or perhaps restarted, you loose access to that source.

How do these companies suggest you get around this issue? Distribution amplifiers – run the audio into each studio’s engine through a DA. Hang on! Isn’t the point of Audio-over-IP equipment to avoid all of that thick multi-pair cable which is so expensive and takes extra time to install?

Let’s take a look at how Axia does it: no audio is actually connected into the studio engine. It all is connected into Audio Nodes, which are basically a 1RU device which hooks into your audio network via a single run of Cat6, and has some analog inputs and outputs on the back. All of that audio is now available on the network, to be accessed wherever you desire.

The end result: if you need to turn off a whole studio, you don’t risk taking any station-wide audio off the network. You also don’t need any multi pair cable into each studio, and DAs.

The problem I think the other manufacturers are facing is old thinking. (Actually, this is what the technical manager at Hope 103.2 described it as – and I agree with him). They are using the old methodology of all audio being connected into the studio, rather than having it connected into anywhere on the network. I can’t blame them for thinking like this – studios have been doing this for years, why change it for digital, right?

Why would you want to stick with this old approach when it’s obvious that this node approach of Axia’s is better thinking? By the way, it’s not as if Axia came up with this approach – computer networks have been doing this for ages.

Let’s move forwards and adapt new ways of thinking. Let’s be agents of change.

(I don’t mean to bag out Logiteck or Klotz. I spoke to both of them at SMPTE09, and they are great people. However, I believe that perhaps they are using the wrong techniques for this digital studio revolution.)

If you follow me on Twitter or Facebook, you would know that I have been at Hope 103.2 all week, on Work Experience. It’s been great. Truly, it’s probably been the best week I’ve had for several years.

I learnt heaps, especially about Axia Audio over IP systems, as well as Dalet 5.1, and all sorts of other tech goodies they have in master control. I was able to go around to each of the departments at the station, and see what their jobs entail, and help out a bit. I even got to do a cold call to try and sell sponsorship!

However, the best part wasn’t the tech. It wasn’t the marketing, sales, programming, promotions, events, creative, production, or on air teams. It was the atmosphere of the whole team at Hope 103.2, and the great vibe of everyone. I haven’t seen such a unified team in a long time (I believe the last time was LoveThat a few years back, but it was a smaller team).

I’ve met some great people at Hope 103.2, and I hope to keep in touch with them as time goes by. Perhaps I should even sign up as a volunteer? Would I have enough time in the day if I did that? Maybe. I suppose I should just be lead by God, and follow his guidance.

Anyway, thanks so much, Hope 103.2!!