Archive for the ‘IT’ Category

Dante Certified! Level 3

April 9, 2020 Comments off

Just wanted to give a quick update. I just completed and passed the level 3 test online for Dante Level 3! Yeah!

I will admit it was not as “easy” as I would have thought with the amount of work done in our facility. I am happy that I did it! Confirms that I maybe possibly really know something, though may not be an expert yet!

If you are out there working your way through any cert or achievement, keep at it. It is well worth it and quite satisfying.


Categories: Equipment, IT, Management Tags: , ,

Audio Over IP (AoIP)-Dante

March 19, 2020 Comments off

To Audio Over IP or not to Audio Over IP. That should not be the question. The answer is a definitive yes. This should be a decision of adding another layer to the arsenal of audio options toolkit. We all still need analog and digital audio. Just add IP to that kit. Of the options available, from proprietary LiveWire and Wheatnet, to what may be considered standard, the choice is yours. Do not be fooled by AES67 claims. Think about what you want to do and why. I chose Audinate Dante. It compliments what I have and moves us into the future. And for my system it is integrated with Sierra Automated Systems (SAS) 32KD and Bravo. (It even supports AES67.) Choose wisely.

I know you have read about AoIP. I know you know about AoIP. I know you use AoIP. Any modern codec is using AoIP as we all use the Internet to feed audio remotely. The basics of creating an AoIP network is simple. You need a network. The main part of this network is your switch. Do not use a hub. Make it a good switch. Design your network for at least 1 GB. Depending what you decide on a platform, you may need a DHCP server, and possibly some high-end switches. Some will want to Subnet and use VLANs on existing networks. I am of the belief of making things simple, so I chose to create a completely independent and isolated network. I chose Dante.

What makes Dante “simple?” Many things, but the main is the fact it does not require any special hardware. No special switches. No special configurations. In addition to that it does not require DHCP. The IP addresses are automatically assigned by Dante just like the automatic addressing Windows does when a DHCP server is not available. I chose to manually, or statically, assign the IP addresses. To manage Dante, the machine that has the Dante Controller has two NICs (Network Interface Card), so one is assigned an IP address for the Dante network. As the audio in the broadcast facility is contained here alone, there is not need for a gateway. I have 59 devices, so the assignment and manually configuring of the Dante portion may take time, but once it is done, it is done.

You ask about automation and playback computers. Two NICs. Ask me how many times I have been off air with this configuration. I dare you. Zero. Keep that in mind. Each machine has 1GB NICs. All studios have CAT6 cable home runs to the switch. Avoid multiple switches if you can. This is in line with keeping things simple.

And that is the basic framework that I use. Keep it simple. Don’t try and do too much at once. Get used to what you are doing.

Next post will be the basics of Dante. I will cover the Dante Controller basics.

In the meantime, check some Audinate links while you plan your system:
So You’re Adding Dante to Your Network?
Broadcast: Radio


NAB 2016

April 14, 2016 Comments off

It’s that time of year again. I’m headed to the NAB convention. It will be quite a quick trip as I’m lined up to see a bunch of folks, but I do not know when! Also learning the nuances of the new company is interesting. Key points for me is some AoIP stuff which I already have, just needing supplemental items, staring down transmitters with HD (Nautel), and getting a look a Tieline’s new Via. Wonder where they got some ideas from?

I will say I’m not impressed by the credential world. I signed up in December. Decided to check and make a minor update and discovered they want so much more personal information now then when they first had me sign up! So after signing my 1st born away, I have the “proper” email confirmation as they have a new system to pick up badges. As the saying goes, Oh, boy, this is gonna be great! I understand they have had abuse of badges, but at least be consistent and don’t change registration in the middle of the window, or at least notify those that did register they need to “update” some information. Here’s the kicker: A colleague went to update his information and he was charged $25! Bad customer service, IMHO.

Anyways, I’m looking forward to seeing folks I have not seen since last year, and to meet new people, some who actually work for the company. I’ll be posting during my short stay, so check in and get my field reports!


Categories: Equipment, IT, Management Tags: , ,

Our New Remote Broadcast Case

July 1, 2014 Comments off

Having worked many live broadcasts for radio I have seen many setups. Our setups have ranged from the complex to the most simple. A wide range for sure. We have broadcasts which require four or more mics down to simple “call-in” type hits using the Tieline Report-IT application. Now we put together something for the simple end such that any air talent can set it up.

What does this remote broadcast case contain?  Here’s the list:

Apple iPad running Tieline Report-IT Enterprise equipped with Verizon 4G LTE wireless
Alesis I/O Dock
Fostex amplified speaker
Presonus headphone amplifier
2 Shure SM58 mics
2 headphones
associated cables and 25′ extension cord.

Remote Setup

Report-IT application running on iPad install in Alesis I/O Dock

The speaker and headphone amp are items we had in house that were either spare or used in other applications that are no longer necessary.  Mr. Bill was along to assist in the setup and make sure everything ran smoothly.  The headphone amp is used just in case of a two person setup, and noted later as an interface to mono the audio feed.  We have found in many cases if the environment is not too noisy a guest does not use, or need, headphones.  It adds additional gain for the deaf air talent, too.  If the air talent does not need the amp, just plug into the headphone output of the I/O Dock.

We did find in another broadcast test that the iPad will smoothly transition between 4G LTE  wireless and WiFi connections.  This was discovered when checking out a new site.  A little added bonus.

After doing an initial broadcast and testing, we discovered that the Alesis I/O Dock is designed around two independent channels.  Input 1 is the left channel and Input 2 is the right channel.  These channels are independent throughout the system with no mixing or mono-button capability.  The Tieline Report-IT application, being a mono or one channel application, only “saw” Channel 1, so a mic plugged into Channel 2 did not feed audio to it.  I voided the warranty.  Since the device only cost us $177, I decided to open it up and modified the I/O Dock.  This first modification, and I have others planned, was to make sure two mics fed the application.  No schematic was available, but I was able to research the chip-sets used and found the AD-DA (Analog to Digital/Digital to Analog) converter chip.  Armed with the pin-outs I used my oscilloscope to trace the signal at that point with the goal of making sure the summing occurred after the pre-amplifiers for the inputs.  I located a convenient locations, soldered in a jumper, and all was good.  An instant mono, or summed, source for the iPad.  This modification does not affect the headphone or main out feed of the I/O Dock, just the feed to the iPad, so each channel is in separate ears of the headphones if plugged directly into the headphone outputs.  The Presonus headphone amp has a mono button on it, so the device acts as a nice interface for the picky talent.  Return audio from the Report-IT application is not affected and feeds both output channels.  I do plan on modifying the modification to included a switch so at a push of a button a mono signal is produced and feeds all outputs.  Where and how to implement this switch is the tricky part as there is not a lot of space to add it to the I/O Dock, but I will find a way.

Another added benefit of this setup is to allow recording on the iPad using either a third party application like WavePad or even the Tieline application for feeds later.  Using WavePad the talent can record and do basic editing, and once complete, email the audio clip back to the studio.  If using Report-IT the talent can record a report and either feed it down the connection or, if FTP is setup, upload to the studio.  We are currently researching ways to incorporate the FTP feature in Report-IT such that we can upload clips with specific file/cart numbers and have them automatically import them into a RCS NexGen log.

Why not just use a mic adapter and Report-IT on a phone or iPad directly?  We do that, too.  In this setup the ease of incorporating two microphones was ideal.  In addition the comfort level of the air talent increases as they have that physical something in front of them.  Some of our staff has embraced this new technology, but others seem to be less forgiving.  As we easy them into it, we make it simple and functional for them.  Soon they will be able to run out with a setup on their own and not think twice of it.  Getting things done.  That ‘s what it is all about.

Alesis makes a product called the I/O Mix which is a 4 channel mixer.  We are looking into that, but this is taking things backwards.  There may be a use for such a setup in the near future.  For a more complex setup, Mackie makes the the DL608 and the DL1608, 8 and 16 channel, mixers for iPad.  These are sweet as they incorporate the features of the Mackie VLZ series of mixers.  I know of a station that uses this setup for their NFL broadcasts.

As the technology and connectivity continues to improve, applications like Tieline’s Report-IT simplifies the ability to provide for quick, live broadcasts, and news gathering.  We are always looking to simplify and utilize emerging tech to our advantage.  The package seen here does not cost that much and the flexibility makes it more desirable.  The elimination of bulky and confusing mixers appeals to air talent and promotions alike.  Improved audio quality for “call-ins” over a standard cell phone call makes us stand out over the competition.


NAB Show 2014 Recap

May 1, 2014 Comments off

Coming up on a month out and I have not even done a recap of the NAB Show! Well, that’s because most of the wanderings I did had to do with actual business this year. Odd, but true. I really could have used a third day this year as I did not even make it to the South Hall!!! Nor did I visit my friends at GoPro or DJi. Now that is what I call busy.

What I did see was the cool stuff that you probably already know about through trades or hearsay. I like the new Nautel GV series transmitters. Harris is also looking good and stepping up a bit. This time I was actually talking STL equipment with them. The Alliance had their share of stuff, and all they need to do now is make transmitters since they seem to do everything else. As you can tell if you have read this far, nothing really jumped out at me at this point. I did have a nice demonstration of the Tieline offering: the Codec Lounge. A very good concept and we discussed possible ways of making it even better. Maybe I’ll get a demo/beta version to try out. I also heard about the SAS Virtual Console of which I will get to see shortly. I have some ideas for this.

Of course on the Radio side of life is talk of HD Radio. HD this, HD that. As we progress with this technology I see more and more use of it as a data transport more so than audio. Traffic, weather, album art, artist and title. Wonder what else we can squeeze into 96kb, or 128kB? Did I get to see any demos? No. I saw a couple of cars out front, though. The one thing that stood out to me is that different manufacturers are offering different radios that do different things. My new Mazda6 has HD, but it does not do album art; it does everything else. A hand full of aftermarket have displays for everything, but there are many that do not. Will there ever be a “standard?”

Along the lines of STL’s (that’s Studio to Transmitter Links for the acronym challenged) I’m seeing more in the IP transport arena. We are actually researching upgrading our aural STLs to an IP based system for two reasons, flexibility and flexibility. Audio over IP on a private network is just fine these days and for a backup to anything else it is great. With all the data we push around with IP based remote controls and addressable transmitter equipment, the added flexibility of IP makes life much more simple. For audio I was looking a the Tieline and Worldcast gear. As for a system we are looking into the licensed 8, 11, etc. Gig radios and broadband data. Let’s see how that pans out over the year.

As we move forward what did you see that excited you at the show? Overall, not too much jumped out at me. Yet, on the face-to-face time, it was a very good show. Maybe next year I can get an extra day to see the other world of cool stuff in the South Hall.

Linux, Initial Observations

October 19, 2013 2 comments

A couple of months ago I posted on Goggle+ for suggestions on how to enter the world of Linux.  I was enlightened on the responses and jumped in.  I installed VirtualBox virtual machine software on my Windows 7 desktop and had at it.

First I downloaded Ubuntu.  The 64-bit stable release 12 did not take too well, so I went with version 13.  Install went well.  My impression after starting to use it was a feel between Mac OS and Windows.  A mash up, if you will.  The package came with LibreOffice, so I briefly poked through that.  I found the standard games.  I used the standard browser.  All worked.  I when decided to download the Chrome browser as a test.  No problem there.  I still have much to explore as Ubuntu provides a lot of stuff in their package.

One thing stood out that annoyed me.  The scroll wheel on the most does not work.  At this point I did not know if it was a VM issue or Ubuntu.  I guess I’m used to that particular mouse feature, so it stood out.

After this quick study I looked for the other suggested Linux build, Debian.  There were two routes to take on this, and being a noob (yes I just used that word), I downloaded some full ISO image.  Thinking I did not need this running on a virtual machine I looked at the options again and found a network build/install.  I downloaded that and installed it.  While Ubuntu has links to apps like a Windows desktop, Debian gave me a blank desktop with a drop down menu.  I poked around and was getting comfortable very quickly, though I still have tons to learn.

Thinking I know enough to cause trouble I began to surf the web using the default browsers.  Ubuntu’s seemed a bit clunky and I decided to jump to Chrome.  The Google browser installed automatically and ran well.  In Debian the default browser was just like Firefox but with a different name.  (I’m now sitting at my machine, the browser is Iceweasle.)  It was quick and easy to use.  To be fair on the comparisons I downloaded Chrome.  Debian did not install automatically.  It downloaded an install package which made me learn how to install the package, which I did figure out after one false start.  That was not all, I had to find where it was installed and it did not add a shortcut or link in the menu.  I poked around the file system and quickly found the file to run.  I learned how to add it to the menu list which was satisfying.  Performance was similar to the default browser, so the jury is still out on which one I like best.

I plan on looking for the best or proper antivirus software to run next. I don’t want to assume all is safe like Apple does.  More research needs to be done as I continue on.  Both versions of Linux came with Libre Office, so I get to play with that.  I want to search for more applications that may be useful, too.  Any suggestions are welcome.  I will follow up on this post add I continue my journey into the Linux world.


Categories: IT, Management Tags: , , ,

Burk: ARCPlus, PlusConnect-NV, and AutoLoad Plus

October 18, 2013 Comments off

There is something very satisfying when helping a fellow engineer solve an issue.  It is also nice to think that a manufacturer would recommend making the contact due to past experience with their equipment and associated equipment.  In this case Nautel directed said engineer to make contact since I am familiar with the NV line of transmitters and the Burk ARCPlus line of products.  In fact, the Nautel tech sent me the initial email, then everything flowed from there.  Apparently, and I knew this, there is a multiplier issue with Burk and meter readings of the Nautel NV series transmitters via the PlusConnect device.

A while back I noticed after a firmware update that I was no longer getting the proper Reflected Power reading from my transmitters.  I have 2 NV20s.  No changes of decimal places seemed to make a difference.  Working with Burk technicians we determined there was a multiplier issue withing the system.  As a work-around we used an unused channel to take the reading, and then used a Virtual source on the channel on which all my units displayed the readings (ARCPlus, AutoPilot Plus, etc).  This solution worked and all was good.  I assumed that any future update would correct this issue.

Then came this contact.  I immediately recognized the situation as being similar.  Reflected Power reading and this time Reject Power.  I suggested to do the work-around and see if it made a difference.  I was glad to hear from him this morning that it did, but he had another channel that was doing something odd, the PA Temp reading was a 4 digit number and changing the decimal places in AutoLoad made the reading go out of range; the dreaded 99.99 reading.  As this was not a channel I normally monitor, I gave it a shot to see what I would get.  Sure enough the raw reading was coming back as 3613 and 3684 on my respective transmitters.  I thought that this was a good number, but the decimal place was off, so I changed the decimal setting in AutoLoad.  Sure enough the ARCPlus was now reading 99.99!  I tried a decimal setting of 000.0 from 00.00 and then I got a -999.9!  Sure enough there is an issue with a multiplier.  In this case it was TOO BIG, so I decided to take the raw reading on a spare channel.  I then changed the metering channel I wanted to read to a Virtual source and divided the raw reading by 100 which displayed the result of 36.13 for the first transmitter.  As it is a temperature in unites of Celsius, this reading on a reject is good.

Phew. Of course I called Burk and filled them in.  Off to the programmers to see what is up.  In any case, if you have a setup like this and your reading is too low and you know what it should look like, the solution is to create a channel that is a virtual source.  In my case the expression entered:  M256*1000.  Translated to take meter reading on Channel 256 and multiply by 1000.  On the PA temp the expression entered for the virtual source:  M255/100.  Translates to take the meter reading on Channel 255 and divide it by 100.

If you have this issue, fix it by doing this manual multiplier/divider thinking.  All you are doing is what the program should be doing when changing the decimal places setting.  Burk is aware of this issue.  As I copied my Nautel contact, they are aware of this issue, too.  Happy troubleshooting!


Categories: Equipment, IT, Management

The Future

September 25, 2013 4 comments

I just wanted to solicit any thoughts on the the future of Radio.  Television is OK, too, but I work radio.  I want to know what you think about hardware, programming, and how they will interact in the future.  Send email or reply to this blog. 

Email:  bill at eisenhamerengineering dot com.

Over the last few months I’ve been thinking about this subject.  Seeing some of the recent moves by companies like Cumulus makes me more sure of what I see. 

Clear your mind.  Think outside the world as you know it.  If you want to discuss and/or collaborate, contact me.  This should be quite the exercise.  Traditionalist need not apply. 

Categories: Equipment, IT, Management Tags: ,

Equipment Testing Is Fun

June 28, 2013 Comments off

I like to test equipment. I like to see if something does as advertised. I also like to see if it fits into our broadcast environment and whether it should be recommended to others. Though time consuming, some days or weeks are free to have fun. Let’s do it!

As posted in my Tweets, I got the play with the new Tieline Technology Merlin Plus codec. I had two things that piqued my interest: 6 mono simultaneous IP streams and the Opus algorithm. The box proved worthy on both accounts. I await a blog post from yours truly on the Tieline blog. As soon as it appears I will link to it.

Next on the bench is a continued test on the 25-Seven PDM. I’ve had the precision delay awhile and have been testing it for HD diversity delay control. I had a couple of suggestions. Well, since then, they made the changes. These changes required a firmware update. That firmware updated required a hardware change. So, I sent the test box back, it got it’s guts replaced, the firmware updated, and now it is burning in on the bench. I soon will be poking at it to make sure it does what I expect it to do. I will write more on that when I get it back in service.

In the past I’ve done Field Reports for Radio Magazine and Radio World. I hope those who have equipment they want to test out in the field read this because I enjoy poking at the new stuff. Now only if I can afford to purchase some of these things! That’s a whole different story.

If you have any equipment that you are interested in learning about, please ask, and I will give you my honest opinion.

Have a great weekend.


What Apps Do You Use?

June 7, 2013 Comments off

Happy Friday All!

Yeah, this is some filler stuff, but it crossed my mind and I wonder what apps you use for your work.  There are some apps that I use daily, and others are available when I need them.  All my apps are Android as I use a Samsung Galaxy Note 2 phone and an Asus tablet.  If you have i-apps, I bet you have some good one there.  So, here is my list:

DroidEdit Pro:  This is on my tablet.  I use this to edit web pages on the fly and as a text editor if necessary.  The pro version has FTP support built into the app and if you use Dropbox (I don’t) it will connect with that.

ElectroDroid:  I use this as a reference.  Comes in very handy.  If I see myself using it more I will purchase the full, pro, version.

Evernote:  Daily use.  I love this service.  The app works well, though I think their interface can be a bit better.  It syncs to all my devices, so I am a happy camper.  Having notes that I take at the office available at a transmitter site has been invaluable.  I’ve had calls while out and about and I have the information handy.  Invaluable.

GPS Essentials:  A new app I am playing with is handy.  Compass and GPS information.  Still in the eval stage.

HootSuite:  Yup, this is where I post to my Twitter feed and catch up on those I follow.  I do not use Facebook that much, so that part doesn’t help.  Now if they added a Google+ feed that would be awesome.

OpenSignal:  We do a lot of 4G LTE broadcasts.  Yes, we do.  We have one today.  When out in the field checking on broadcast sites, I whip out the phone and use this app to tell me all the information about where the cell tower I’m connected with is, whether it’s 3G or 4G, data rate, voice quality, and mapping.  This app has improved over the years and continues to serve as a useful tool.

RealCalc Plus:  Paid version of RealCalc.  This is a very handy scientific calculator.  If I do not have my trusting HP with me, this fills in nicely.

Report-IT:  Of course I had to add this.  We are a Tieline shop for our remote codecs.  This app we have on our Apples and Androids.  It has saved us much time and effort on some multi-location, single venue events.

RF Terrain Profile:  I just found this one and testing the free version.  This looks useful for a quick evaluation of STL paths.  It gives you the profile of the path and you can add a link budget.  The paid version allows import and export to a KML file for use in Google maps/Earth.  It shows the first Fresnel zone on the profile.

SatelliteAR:  I had this about 4 devices ago. This is an awesome satellite tracker, finder, and then some.  I use it to track the ISS, too!  If you need a rough way to point a satellite dish, this will help tremendously.

Shush!:  How many meetings do you go into and set your phone to vibrate or silence?  How many times do you forget you did that?  This app is awesome.  You use your phone’s volume control and set either silence or vibrate.  Then you set the time, e.g. 2 hours, and click Shush!  After 2 hours, the phone will go back to normal volume settings.

Smith Chart Matching Calc:  I have not had a real use for this, but it doesn’t hurt to have in the arsenal, especially if you work on AM arrays.

Splashtop2 Remote Desktop:  A great find by our IT dude.  Remotely access all your necessary computers via phone or tablet and operate them as if you were sitting right there in front of the machine.  I can check up on our main remote control computer for an overall look, access my Importers, and of course my work desktop if I need something on that.  Good stuff.

Ulysse Gizmo:  Another GPS compass that I’ve use for years and it just gets better with upgraded devices as the GPS receivers in said devices get better.  Compass, speedometer, GPS status, bubble level, clinometer, magnetometer, map viewer, etc.  With this you don’t  need to carrier that GPS device with you any longer.

Weatherbug:  I keep bouncing between weather apps, but always come back to this one.  I would settle on Weather Underground, but that one seems to really slow my device, so back to this.  The upgraded interface is nice and covers all my weather needs.

WolframAlpha:  Just becuse!  Have you every used this?  It is very cool and fun, in a geek way.  Check it out.

I have the whole Google Suite thing going for me, too.  All the obvious with GMail and Maps, but I also use Voice and Sky Map.  I just started getting into the Google Now thing.  So far it is pretty good, but very basic.  Not the most useful stuff, yet.  I know they will start tracking me more as I use it.

There you have it.  A bunch of apps that I have on my Android devices that help with my work.  I know there are others, so feel free to suggest more.  I’m always looking for improvements and upgrades.


Categories: Equipment, IT, Management Tags: , ,
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