Search found 2674 matches

by NECRAT
Wed Feb 05, 2020 4:33 pm
Forum: Broadcast Engineering News
Topic: Sony camera leap day bug
Replies: 6
Views: 2326

Re: Sony camera leap day bug

Moved to Engineering news forum.
by NECRAT
Tue Jan 28, 2020 4:49 pm
Forum: AM Radio
Topic: Another one bites the dust
Replies: 10
Views: 1266

Re: Another one bites the dust

The only ways for an LPFM to generate revenue are through donations, fundraisers and underwriting because they are non-commercial. Any LPFM that airs actual commercials should be reported to the Commission for violating the terms of its license. Two of the three I mentioned where. Nothing happened.
by NECRAT
Sun Jan 26, 2020 10:35 am
Forum: AM Radio
Topic: Another one bites the dust
Replies: 10
Views: 1266

Re: Another one bites the dust

Then there are the three LPFMs in Southern New England, which are all running commercially, two of which are "co owned" as part of a four station cluster.... The two which are co-owned, supposidly were reported by another radio owners in the state (who himself is running two translators on...
by NECRAT
Fri Jan 24, 2020 3:20 pm
Forum: From the Trenches
Topic: Oh those viewer calls...
Replies: 15
Views: 5816

Re: Oh those viewer calls...

Back during the transition to all digital TV, we had a woman who called us, after talking to her friend "in the know" to tell us how unhappy she was that we were turning down our transmitters at night to save power. She was so mad she even contacted the local senator's office. Turns out, s...
by NECRAT
Wed Jan 22, 2020 4:15 pm
Forum: Broadcast Engineering News
Topic: KOLN-TV 1500 foot tower down
Replies: 1
Views: 456

Re: KOLN-TV 1500 foot tower down

KOLN-TV's tower was constructed in 1984, according to FCC records. KOLN did not repack.
by NECRAT
Mon Jan 20, 2020 8:28 pm
Forum: AM Radio
Topic: AM Revitalization Idea.
Replies: 8
Views: 801

Re: The Looming Engineering Age Crisis

Deep Thought wrote: Mon Jan 20, 2020 2:23 pm
This should probably be moved to the AM forum.
Agreed, and it has been done.
by NECRAT
Thu Jan 09, 2020 3:23 pm
Forum: FM Radio
Topic: Smart AC Power Circuit Breaker with Web Control?
Replies: 18
Views: 1005

Re: Smart AC Power Circuit Breaker with Web Control?

Three comments: Motor operated circuit breakers are found in UHF TV transmitters employing IOT's (Inductive Output Tubes). The crowbar circuit which protects the IOT throws a dead short on the beam supply via a hydrogen thyratron. This trips the 3-phase breaker for the beam supply located (in the c...
by NECRAT
Wed Jan 08, 2020 4:21 pm
Forum: FM Radio
Topic: Smart AC Power Circuit Breaker with Web Control?
Replies: 18
Views: 1005

Re: Smart AC Power Circuit Breaker with Web Control?

spareparts wrote: Tue Jan 07, 2020 8:17 pm ABB (and I'm sure others) make motor operated circuit breakers.
Motor Operator Breakers are typically only found in machine control logic systems, where breakers are also tied to a shunt trip, and used as a method to reset. They are never found in life or property safety panels.
by NECRAT
Tue Jan 07, 2020 2:46 pm
Forum: FM Radio
Topic: Smart AC Power Circuit Breaker with Web Control?
Replies: 18
Views: 1005

Re: Smart AC Power Circuit Breaker with Web Control?

Reminds me of the photo in RadioWorld magazine's Workbench column that showed a Continental Electronics FM TX circuit breaker being pulled up/on through a rather large externally-mounted solenoid? Seemed like a clever idea but I too agree that you really want to be present when restoring power. Bob...
by NECRAT
Sat Jan 04, 2020 2:33 pm
Forum: FM Radio
Topic: Smart AC Power Circuit Breaker with Web Control?
Replies: 18
Views: 1005

Re: Smart AC Power Circuit Breaker with Web Control?

The old panel box is about 40 years old. I would never want a circuit breaker that I can't reset in person. If something causes a trip, you're not sure, hit "reset", and it comes back, you could be looking at replacing the panel with the rest of the building that burned down. For the nuis...
by NECRAT
Fri Jan 03, 2020 12:15 pm
Forum: FM Radio
Topic: How to feed mono only audio into base band input on tx?
Replies: 14
Views: 723

Re: How to feed mono only audio into base band input on tx?

You want an audio processor for your translator. Trust me on this. The audio processor does more than make your station "sound good", it helps provide modulation density and other niceties that can help reduce multipath noise, offer protection from over modulation and make your station sou...
by NECRAT
Tue Dec 31, 2019 3:47 pm
Forum: AM Radio
Topic: AM Digital NPRM
Replies: 54
Views: 3459

Re: AM Digital NPRM

Might as well find another use for the band, and put the AMs on ch. 6 and other places. Channel 6 is an active channel in the forever shrinking Television Table of Allotments. This is not happening. With the recent loss of 100MHz of spectrum, the last thing we need is to lose another channel. This ...
by NECRAT
Mon Dec 30, 2019 6:02 pm
Forum: FM Radio
Topic: Nicom BKG77 Issue I think
Replies: 11
Views: 874

Re: Nicom BKG77 Issue I think

Our tower guy had told me about issues with water getting into the Nicom bays. He's had it at more than one station.
by NECRAT
Fri Dec 20, 2019 3:56 pm
Forum: TV Engineering
Topic: Leitch ADC5116 Analog Clock
Replies: 3
Views: 1902

Re: Leitch ADC5116 Analog Clock

The OP hasn't been back on the forum since he posted the question in 2017. The chances of him seeing your question are next to nil, sorry.
by NECRAT
Sun Dec 15, 2019 8:11 pm
Forum: TV Engineering
Topic: Image Video protocol
Replies: 1
Views: 271

Re: Image Video protocol

We're using this interface between the TSI and VIP cards, let me ask our engineer who does this tomorrow.