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Tag: "transmitters"

Monday Memo: Listeners Kidnapped!

| May 17, 2021

By Holland Cooke
Consultant

 

BLOCK ISLAND, RI — Notice how often transmitters invite listeners and viewers to leave?

NBC uses affiliates’ air to ask viewers to watch Peacock instead. They even cannibalize their own linear channels. As President Trump recently addressed Congress, Lester Holt anchored on NBC, while MSNBC “Morning Joe” stars anchored coverage on Peacock. As if Brian Williams + talking-heads on MSNBC and Shepard Smith + talking-heads on CNBC weren’t splintering viewership already.

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Crud and Other Stuff

| May 24, 2013

By Thomas R. Ray, III CPBE, AMD, DRB
Tom Ray Consulting
President   
TALKERS
Technical Editor

First the Crud

NEW YORK — So I was working on this transmitter today.  Seriously – I know this starts off like a joke.  Problem was actually a bad air switch.  All transmitters have a way to sense air flow.  If there is no air flow in the transmitter, if, for example, the blower motor quits, it will shut down.  In the case of a tube transmitter, this is to prevent the final amplifier deck from melting down and starting a fire.  In a solid state transmitter (which also uses temperature sensing in the final amplifier), it prevents the transistors from self destructing causing a fire and/or other severe damage to the amplifier.

Anyway, this isn’t related to the air switch, but it could be (the air switch in this case was 33 years old – it simply had enough).  The air filters on the transmitter were caked with crud.

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