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Re: arrakis 12k series issues
To: CRTech <crtech@crtech.org>
Subject: Re: arrakis 12k series issues
From: Mark Croom <markc@newmail.kinshipradio.org>
Date: Fri, 17 Nov 2017 14:43:35 -0600
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Hi Ron,

Interesting but not surprising result. Hopefully everything will keep working hunky dory for you.

On the early Winter -- where I work, across South Dakota, southern Minnesota, and Iowa, we haven't really had much of that wintry stuff yet. But Autumn has been unusually wet and cool. Very little of any warm weather after Labor Day this year which is very unusual. Often we can be doing last-minute painting projects early in November. Not this year.

I already can't wait for Spring and Winter hasn't really arrived yet.

I'm in Pierre, South Dakota right now working with an antenna consultant trying to optimize our two-frequency Shively antenna. Yesterday was actually warm, near fifty degrees, but the wind was 25mph steady on the ground. The guys soldiered on though and got some work done. Today it's cold but relatively still, and it was unexpectedly damp this morning. Tower guys are slugging the antenna while the consultant (Mike Flood out of Wisconsin) directs them to move, add, and remove slug material to try to bring this thing back in. I'm watching over his shoulder occasionally wondering whether anybody really understands this stuff.

And so it goes, another day in the life of a field tech in broadcasting.


On Tue, Nov 14, 2017 at 6:09 PM, Ron Huckeby <huckebyrj@gmail.com> wrote:



The update….after moving 11 DBX 286A’s to their new homes, I found they are all labeled TRS balanced on the back next to the jack. They appear to be happy into the StudioHub/Axia wiring.


Now that I am somewhat recovering from the move of 8 signals across town in Helena, Montana, to brand new studio facilities, I am contemplating the fact that winter was about 3-4 weeks earlier than the last 10-15 years. Last week’s snow is still here with 3 inches of new on top of it this morning. Those mountaintop projects are going to have to wait until June…




Ron Huckeby, CBRE

Broadcast Engineer

Butte, Montana


200 pixelSBECertifiedLogo2015


From: Mark Croom [mailto:markc@newmail.kinshipradio.org]
Sent: Friday, November 03, 2017 8:40 PM
To: CRTech <crtech@crtech.org>
Subject: Re: [CRTech] arrakis 12k series issues


I'm a little confused here --

I've never had an issue using Tip/Ring into an electronically balanced input with either the 286A or the 286s. I rarely connect grounds on balanced line level gear.

Is this something unique to the original 286 that I haven't encountered yet? I the INSERT jack is unbalanced, but the TRS output, at least on the more recent ones, is electronically balanced and if you put that balanced signal on the balanced inputs of a console, I have never failed to get audio through.

So I'm having a little trouble getting my head around this issue.


That said, if the mods on the Arrakis board have anything to do with patch points then I would definitely remove them, put everything back to factory if possible, and THEN use a signal generator and tracer to see what's coming through, or where it's getting lost.






On Mon, Oct 30, 2017 at 12:53 PM, Ron Huckeby <huckebyrj@gmail.com> wrote:



The DBX is unbalanced output. If you used a stereo plug for your output connection and you are going into a transformer on the mic channel (I don’t know what those boards have) you have an open connection. I ran into the same thing using StudioHub on Axia with a DBX mic processor. Premade stereo plug, wired to my own RJ45, no ground, no audio.


So, first thing is put a known signal on the mic input to the board to see what you have.



Mark W. Croom
Riverfront Communications, LLC
Yankton, SD
References: arrakis 12k series issues
(Robert Chrysafis <kc8gpd@hotmail.com>, 29 Oct 2017 12:47:41 -0000)
RE: arrakis 12k series issues
("Ron Huckeby" <huckebyrj@gmail.com>, 30 Oct 2017 17:53:13 -0000)
Re: arrakis 12k series issues
(Mark Croom <markc@newmail.kinshipradio.org>, 4 Nov 2017 02:39:55 -0000)
RE: arrakis 12k series issues
("Ron Huckeby" <huckebyrj@gmail.com>, 15 Nov 2017 00:09:51 -0000)
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