Search found 490 matches

by Kelly
Wed Aug 15, 2018 1:25 pm
Forum: AM Radio
Topic: Transmitter plant ambient temps?
Replies: 15
Views: 962

Re: Transmitter plant ambient temps?

I recently had the opportunity to tour one of the newer NetApp data centers outside of Raleigh, N.C. One thing of note is these new data centers don't use hardly any conventional air conditioning. In speaking with one of their engineers the need is, as it's always been, is to flow enough clean air t...
by Kelly
Wed Aug 01, 2018 8:23 am
Forum: FM Radio
Topic: Source for the rubber bungs that seal cables on transmitter shacks
Replies: 4
Views: 231

Re: Source for the rubber bungs that seal cables on transmitter shacks

EBay has them from time to time as well.
by Kelly
Wed Aug 01, 2018 8:22 am
Forum: FM Radio
Topic: Two soggy Heliax lines!
Replies: 7
Views: 243

Re: Two soggy Heliax lines!

"Draining" lines is a very temporary solution while waiting for the new line and tower crew to replace it. There is no way the line will ever dry out, and as mentioned, carbon and corrosion will cause heating and increasingly poor connections at the antenna. Replacement is the only option.
by Kelly
Sun Jun 03, 2018 5:21 pm
Forum: FM Radio
Topic: Harris HT25-FM
Replies: 6
Views: 348

Re: Harris HT25-FM

A total long shot, but check the MOV's in the HV power supply cabinet. Mine is an HT30, but I had something similar happen where after a storm the MOV just inside the right side panel was making a screaming noise. With the blowers (and in my case a rotary phase converter) running, it's hard to hear,...
by Kelly
Thu Jan 18, 2018 7:45 pm
Forum: FM Radio
Topic: Repair Log: BE FXi-60
Replies: 4
Views: 612

Re: Repair Log: BE FXi-60

The FXi-60 is one of the best sounding exciters, ever.
by Kelly
Fri Oct 20, 2017 8:17 am
Forum: TV Engineering
Topic: More Bad Sports Audio on Fox
Replies: 9
Views: 1055

Re: More Bad Sports Audio on Fox

How does the audio op monitor the 5:1 mix in a truck? It depends. Some trucks are equipped to mix with a stereo and 5.1 output. In that case the answer is yes. While others may have that capability, but don't actually mix specifically for 5.1,may go ahead and encode 5.1 on the way out of the truck....
by Kelly
Thu Oct 19, 2017 8:33 am
Forum: TV Engineering
Topic: More Bad Sports Audio on Fox
Replies: 9
Views: 1055

Re: More Bad Sports Audio on Fox

Having worked many a game from the truck, I can tell you that the many of A1's working on production trucks don't, or can't pay much attention to the mix. Their main focus is generally making sure all the audio sources, IFB's, and console mapping is correct and still functioning. They are hearing mo...
by Kelly
Wed Sep 20, 2017 9:29 am
Forum: FM Radio
Topic: Tower needed
Replies: 6
Views: 998

Re: Tower needed

It boils down to a tower designed for the weight and wind loading characteristics for the environment it will be located. For example; a tower located in the desert near sea level with light winds will require less structural elements than a tower atop a 4,000ft mountain top site with freezing fog o...
by Kelly
Thu Aug 31, 2017 10:10 am
Forum: FM Radio
Topic: Audemat FMB80 RDS and RCS..
Replies: 3
Views: 801

Re: Audemat FMB80 RDS and RCS..

It's been a while since setting one of these up, but generally you'll need a PC running some form of middle-ware application between what your automation spits out, and your RDS encoder. Allen Hartle at Jump2Go is the guru on making really good interfaces for RDS. I've always used his applications f...
by Kelly
Thu Aug 10, 2017 6:27 pm
Forum: FM Radio
Topic: Harris HT30 issue
Replies: 10
Views: 1442

Re: Harris HT30 issue

So this HT30 is randomly shutting down. Sometimes with no faults, other times with other random faults. No two times are a like (not the same fault indicator twice). After it shuts down, it attempts to restart a couple of times, then it will reset, and flame up like normal. You can apply the Plate ...
by Kelly
Tue Aug 08, 2017 12:01 pm
Forum: AM Radio
Topic: Bad hum
Replies: 6
Views: 1342

Re: Bad hum

As low-tech as it sounds, the tried and true troubleshooting always pays. I would: Start at the transmitter site. Disconnect the audio input from the STL to the transmitter and look for the noise to go away. Goes away? Then go to the studio and disconnect the audio from the transmitter STL input. No...
by Kelly
Thu Aug 03, 2017 9:40 am
Forum: STL Engineering
Topic: Backup STL link
Replies: 8
Views: 1679

Re: Backup STL link

If you're just looking for a backup positive way to shut off the transmitter, why not use the squelch contacts on the STL receiver and connect it to one of the transmitter external interlock connections? Shut down the STL transmitter and off goes your broadcast transmitter.
by Kelly
Tue Jul 04, 2017 5:04 pm
Forum: FM Radio
Topic: Static Dissipators?
Replies: 13
Views: 1868

Re: Static Dissipators?

Agree with Mark, there may be something to Static Cats or other spine-ball devices, but it's hard to document. Most of these devices are installed on top of the tower, but that doesn't stop other parts of the tower from being struck. That said, I can't think of a tower which uses some of these devic...
by Kelly
Wed May 24, 2017 11:15 am
Forum: Radio Studio Engineering
Topic: Wheatnet vs AXIA
Replies: 8
Views: 1688

Re: Wheatnet vs AXIA

We're using Axia and Pathfinder to great success with our six radio studios. We steered away from Wheatstone, mainly because we experienced a poor customer support with one of our big TV consoles. My impression: Wheatstone has a lot of blinking lights and graphics, but the overall construction seems...