Search found 290 matches

by grich
Mon Mar 20, 2017 9:55 am
Forum: Ask the Engineers
Topic: TFT 3320 CAP converter
Replies: 4
Views: 88

TFT 3320 CAP converter

I know someone with a 3320 CAP converter. He says the unit appears to be polling the FEMA site just fine, but the processed alert log shows it hasn't actually processed a message since 2015! I didn't ask him how he passed the last National EAS test. :shock: Of course, he's not getting any CAP tests....
by grich
Thu Mar 09, 2017 5:19 pm
Forum: FM Radio
Topic: STL dropouts....back today
Replies: 8
Views: 410

Re: STL dropouts....back today

Happens with our TV STL a few times a year, and at about the same times you list. The only thing you could do is get a second antenna in the spot the ducting forces the signal to. The telco folks have designed space-diversity into many of their MW systems for years...a second dish is mounted a speci...
by grich
Tue Mar 07, 2017 1:58 pm
Forum: FM Radio
Topic: High Pitched Tone in FM Audio?
Replies: 22
Views: 724

Re: High Pitched Tone in FM Audio?

I have also ran into the rotten jumper issue on the HT10. In my case, the IPA was erratic. The outer jacket of the RG213 had cracked off and the exposed braid was shorting to the IPA regulator heatsink. The only thing handy was a short piece of RG8 with N connectors left over from a Marti antenna in...
by grich
Thu Mar 02, 2017 3:40 pm
Forum: FM Radio
Topic: High Pitched Tone in FM Audio?
Replies: 22
Views: 724

Re: High Pitched Tone in FM Audio?

davek wrote:
Thu Mar 02, 2017 3:38 pm
Here you go :)

FM-535-WCF.pdf
FM-580-WCF.pdf
You beat me to it! :D
by grich
Thu Mar 02, 2017 3:39 pm
Forum: FM Radio
Topic: High Pitched Tone in FM Audio?
Replies: 22
Views: 724

Re: High Pitched Tone in FM Audio?

I found both bulletins on my computer. Attached.
by grich
Thu Mar 02, 2017 12:21 pm
Forum: FM Radio
Topic: High Pitched Tone in FM Audio?
Replies: 22
Views: 724

Re: High Pitched Tone in FM Audio?

Is the transmitter still running the Digit or Digit CD exciter? If so, get ahold of service bulletins FM-535-WCF and FM-580-WCF from the Gatesair web site. Both bulletins address audio tones generated in the exciter caused by dried-up capacitors. Perhaps something was missed in the previous repair a...
by grich
Tue Feb 21, 2017 10:59 am
Forum: Radio Studio Engineering
Topic: Cleaning out the basement
Replies: 4
Views: 258

Re: Cleaning out the basement

Several stations, especially those far away from decent cell and internet access, still use Marti. One of my clients use Marti almost every night this time of year. SGII power supplies are exact replacements for the control power supplies in many BE transmitters. A couple of networks still use SGIII...
by grich
Tue Feb 07, 2017 12:08 pm
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 67
Views: 2897

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

Learfield just announced the new carriers are up on AMC-18. February 7, 2017… It's official! The five U.S. commercial radio networks who operate their own satellite systems are now up and running on the new AMC-18 at 105 degrees West Longitude. This is the long-term replacement for AMC-8 at 139 degr...
by grich
Fri Feb 03, 2017 10:41 am
Forum: General Computers
Topic: How many entries are in your HOST file?
Replies: 7
Views: 329

Re: How many entries are in your HOST file?

And to answer your question, I don't currently have any entries in my hosts file.
by grich
Fri Feb 03, 2017 10:40 am
Forum: General Computers
Topic: How many entries are in your HOST file?
Replies: 7
Views: 329

Re: How many entries are in your HOST file?

You mean Windows\System32\drivers\etc\hosts? Typically if someone were trying to block access to a website, the entry would read 0.0.0.0 websitename I don't know if just a zero in the IP field would be enough to block access to the sites in your file, but that appears to be the intent. If there were...
by grich
Thu Feb 02, 2017 12:11 pm
Forum: AM Radio
Topic: Translators
Replies: 29
Views: 1502

Re: Translators

And today comes a slight rule tweak:

http://transition.fcc.gov/Daily_Release ... 3304A1.pdf
by grich
Thu Jan 05, 2017 3:10 pm
Forum: Ask the Engineers
Topic: CenturyLink Question
Replies: 8
Views: 526

Re: CenturyLink Question

One of my clients has four different sites with CenturyLink DSL and POTS. We've had a couple of 3-day outages. They tried a 10-day thing once, but I have a helpful account manager on the sales side that helps run interference for me. I'm sure he'll end up being punished someday for it. The only time...
by grich
Wed Nov 30, 2016 12:21 pm
Forum: AM Radio
Topic: How to find out which coax is which to DA?
Replies: 15
Views: 836

Re: How to find out which coax is which to DA?

... and deliberately not put back underground so is to mitigate sitting in potentially wet or saturated soil... Hope you don't mind me asking why the splices are there...is there a groundhog loose on the property? We've had critters gnaw on direct-buried 3-phase feeds to an equipment shelter. Presu...
by grich
Tue Nov 29, 2016 5:14 pm
Forum: AM Radio
Topic: How to find out which coax is which to DA?
Replies: 15
Views: 836

Re: How to find out which coax is which to DA?

Since the bad cable is disconnected at both ends, try hooking a cable locator to the bad line.

Dollars to doughnuts one of those splices failed.
by grich
Fri Nov 11, 2016 5:02 pm
Forum: Digital Television
Topic: Tandberg RX-1290 shows service but no streams?
Replies: 7
Views: 364

Re: Tandberg RX-1290 shows service but no streams?

Doesn't sound like this applies here, but another nice Tandberg gotcha is a missing feature license. One of our news 1290's does not have a 4:2:2 decode license. About 99.9 percent of our news feeds are 4:2:0, but every now and again some network truck throws 4:2:2 at us. Usually the truck op agrees...