Search found 445 matches

by grich
Fri Jul 12, 2019 10:03 am
Forum: FM Radio
Topic: Harris Z FM FET replacement
Replies: 7
Views: 239

Re: Harris Z FM FET replacement

I've only had one Z PA failure, and I didn't fix it myself because I didn't have the time, but Paul Thurst's broadcast engineering blog has details on swapping Z PA FETs. I don't believe he had to align anything. One thing to be mindful of is the age of the transmitter. Harris changed the FET suppli...
by grich
Mon Jul 08, 2019 12:07 pm
Forum: AM Radio
Topic: BE AM-6A RF Out Problem
Replies: 18
Views: 426

Re: BE AM-6A RF Out Problem

I'm working on an AM-1A with a similar problem...symptom was high reflected power, even when running into a good dummy load. I was advised to first try the balance adjustment procedure on the Directional Coupler replacement manual (you can download it from the BE website). That got the reflected pow...
by grich
Wed Jul 03, 2019 10:53 am
Forum: Radio Automation Systems
Topic: SmartCaster Systems help.
Replies: 8
Views: 247

Re: SmartCaster Systems help.

I have a RF client that is still running a version that predates me... Probably early 90's in what looks like DOS. I have never had to touch it since a guy at the station is intimately familiar with it and keeps it limping along. One of my clients has two DOS Smartcaster chassis sitting in the base...
by grich
Tue Jul 02, 2019 10:25 pm
Forum: Radio Automation Systems
Topic: SmartCaster Systems help.
Replies: 8
Views: 247

Re: SmartCaster Systems help.

Dang it...you're quick on the draw. :D
by grich
Tue Jul 02, 2019 10:23 pm
Forum: Radio Automation Systems
Topic: SmartCaster Systems help.
Replies: 8
Views: 247

Re: SmartCaster Systems help.

http://smartsbroadcast.com/library/ Here you'll find manuals for the current Skylla product and the older Smartcaster 2002 product that merged the DOS Smartcaster program with On Air Digital's RS-HD Linux-based audio playout...the Smartcaster software runs in a DOS emulation window within Linux. If...
by grich
Fri Jun 21, 2019 4:37 pm
Forum: TV Engineering
Topic: NBC Late Night and closed captions
Replies: 4
Views: 435

Re: NBC Late Night and closed captions

Yup, they are only doing 608 apparently. This started on May 13th with Fallon. Commercials come though with 708. I have my encoders set to translate 608 to 708 when 708 is missing, so that explains why I still have CC on my Volicon recordings. I just found out NBC has moved network master control t...
by grich
Thu Jun 20, 2019 10:56 pm
Forum: TV Engineering
Topic: IRD control
Replies: 6
Views: 138

Re: IRD control

Make it three thumbs-up for Compusat. It works, and it controls a lot more than receivers. It costs, but if you have to automate receiver switching, dish moves, recordings, etc...this is the way to go.
by grich
Tue Jun 18, 2019 3:06 pm
Forum: TV Engineering
Topic: NBC Late Night and closed captions
Replies: 4
Views: 435

Re: NBC Late Night and closed captions

I spot-checked our Volicon and all looks good.
by grich
Fri Jun 14, 2019 12:47 pm
Forum: TV Engineering
Topic: emergency STL
Replies: 5
Views: 347

Re: emergency STL

We finally had a chance to test this end-to-end today, and it worked! Thanks again NECRAT!
by grich
Fri Jun 07, 2019 12:27 am
Forum: TV Engineering
Topic: NBC Namedropper Trigger Configuration Help
Replies: 30
Views: 1061

Re: NBC Namedropper Trigger Configuration Help

Thanks for all of the great replies everyone! I actually have a new question regarding Namedropper. This is the box that just wont stop! After all of the drama with getting the triggers to receive properly, I now have an issue with LTC. When we set it up initially, we just set the time manually unt...
by grich
Fri Jun 07, 2019 12:08 am
Forum: AM Radio
Topic: SX 2.5 Won't Power on No Lights
Replies: 10
Views: 315

Re: SX 2.5 Won't Power on No Lights

Always a good idea to check for loose connections on the regular. It'll also save your ATU components and avoid downtime... The input and output connections on the SX PA boards are also good places to check for tightness. The output side of the SX1 I care for burned off at the lug and I had to do s...
by grich
Fri Jun 07, 2019 12:03 am
Forum: AM Radio
Topic: SX 2.5 Won't Power on No Lights
Replies: 10
Views: 315

Re: SX 2.5 Won't Power on No Lights

Loose bolts are one thing, but a guy should never have loose nuts. Ouch! That's part of our routine with our Harris Platinum SS TV transmitter...check all of the DC bus connections for tightness. Lotta current to arc-weld with if it got loose. That, and cleaning, are about all we do for maintenance...
by grich
Thu May 09, 2019 3:36 pm
Forum: FM Radio
Topic: Harris HT-35CD No filament voltage.
Replies: 8
Views: 628

Re: Harris HT-35CD No filament voltage.

If you carefully disconnected and taped off the control lines to the SSR, and clipped a 9V battery across the control input of the SSR, that should operate the SSR. Might be worth a try.
by grich
Thu May 09, 2019 3:31 pm
Forum: FM Radio
Topic: Harris HT-35CD No filament voltage.
Replies: 8
Views: 628

Re: Harris HT-35CD No filament voltage.

From the HT35CD manual: "A request for FILAMENT ON produces the following events: if the Three-phase Line Monitor is satisfied with the condition of the power delivered to the Main Cabinet, the DIGIT™Exciter is turned on and the Blower is started; when the Air Switch closes, the Filament solid state...
by grich
Wed May 08, 2019 10:13 pm
Forum: TV Engineering
Topic: NBC Namedropper Trigger Configuration Help
Replies: 30
Views: 1061

Re: NBC Namedropper Trigger Configuration Help

The Namedropper supports a local temperature probe as an alternate to using a METAR server. We do this at WRC / NBC Washington. Evertz sells the probes. They are a serial port device. They can easily be extended a long ways (> 100 meters) with simple RS 422 wiring. The problem with using a local pr...