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Author Topic: Tour of AM Stereo Station KYET  (Read 3219 times)

Offline skeezix

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Tour of AM Stereo Station KYET
« on: September 06, 2022, 0139 UTC »
https://swling.com/blog/2022/09/video-tour-of-am-stereo-station-kyet/

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Dan, shango066 on You Tube give us a nice little tour of KYET on 1070 kHz in Golden Valley Arizona which transmits in AM Stereo (6K day, 1 watt night). Harris solid state transmitter.
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Offline ChrisSmolinski

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Re: Tour of AM Stereo Station KYET
« Reply #1 on: September 06, 2022, 1525 UTC »
1450 WTHU in nearby Thurmont MD used to transmit in C-QUAM stereo, but that transmitter died and the new one is just mono.
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Offline ~SIGINT~

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Re: Tour of AM Stereo Station KYET
« Reply #2 on: September 07, 2022, 0044 UTC »
One would think that they would invest in a proper air conditioner --- LOL That sea container must get pretty hot.
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Offline Kage

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Re: Tour of AM Stereo Station KYET
« Reply #3 on: September 08, 2022, 1432 UTC »
Awesome seeing Shango mentioned on here. By far one of my favorite youtubers and definitely recommend his channel.
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Offline Charlie_Dont_Surf

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Re: Tour of AM Stereo Station KYET
« Reply #4 on: September 08, 2022, 1832 UTC »
Quote from: ~SIGINT~ on September 07, 2022, 0044 UTC
One would think that they would invest in a proper air conditioner --- LOL That sea container must get pretty hot.

The reason they have to run 1 Watt at night is to be able to cool off the container because of all the heat build up in the daytime.  :D

On a serious note, I love the lack of ESD awareness. "Hi. I'm the Chief Engineer. Let me show all the cards in the C-QUAM generator as I put my hands all over them, touching the chips and the card-edge fingers, while I am ungrounded, did not touch a grounded metal body before handling them, while working in the dry Arizona air. I'm a real pro, I zap shit a lot, can't figure out why and it shows." 

Those older chips in his C-QUAM generator have maybe (if he is lucky) 1 kV HBM survivablility, which means he has very little room to play with here and is tempting fate.

Don't @ me with your "but I do this sort of thing all the time, it's fine" horsehockey. No, I'm not bullshitting nor am I being overly cautious. One of the things I do for a living is worry about ESD survivability and I see a lot of customer damage issues from exactly this sort of scenario. I bet he's been handling cards like that for years - possibly even the cards in that C-QUAM generator - but he's not the model to emulate. End of story.

« Last Edit: September 08, 2022, 2041 UTC by Charlie_Dont_Surf »
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Offline ~SIGINT~

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Re: Tour of AM Stereo Station KYET
« Reply #5 on: September 08, 2022, 1948 UTC »
I had the same sentiments with all those cards being pulled ... including the C-QUAM generator card not being re-seated properly. Don't get me started on working on the live transmitter. As a former broadcast engineer, I have performed transmitter maintenance in the past, one of which was 1 mega watt ERP. There is "hot swap" and then there is "hot swap". It's within limits. And then there is walking up to a "hot" tower.
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Offline Charlie_Dont_Surf

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Re: Tour of AM Stereo Station KYET
« Reply #6 on: September 08, 2022, 2045 UTC »
Quote from: ~SIGINT~ on September 08, 2022, 1948 UTC
I had the same sentiments with all those cards being pulled ... including the C-QUAM generator card not being re-seated properly. Don't get me started on working on the live transmitter. As a former broadcast engineer, I have performed transmitter maintenance in the past, one of which was 1 mega watt ERP. There is "hot swap" and then there is "hot swap". It's within limits. And then there is walking up to a "hot" tower.

This line appears appropriate here as well: "I'm a real pro, I zap shit a lot, can't figure out why and it shows."
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Offline ~SIGINT~

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Re: Tour of AM Stereo Station KYET
« Reply #7 on: September 08, 2022, 2056 UTC »
Regardless, kudos must go out to the engineer for keeping the station on the air. He is knowledgeable.
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Offline redhat

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Re: Tour of AM Stereo Station KYET
« Reply #8 on: September 10, 2022, 2317 UTC »
There isn't a lot of CMOS in those cards.  Most of it was MC series stuff from the 80's, the rest being discrete TTL stuff.

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Offline Pigmeat

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Re: Tour of AM Stereo Station KYET
« Reply #9 on: September 11, 2022, 1525 UTC »
My half brother is a project manager for the TVA. They use CCTV vids of guys like that engineer getting bit for that final time as, "What not to do.", lessons for the employees.
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Offline CoolAM Radio

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Re: Tour of AM Stereo Station KYET
« Reply #10 on: September 13, 2022, 1156 UTC »
The dutch LPAM station "Radio Tpot" is also broadcasting
on 918 KHz. in C-QUAM Stereo!

Check out some clips @ Youtube!

http://youtu.be/-uxvzzQaLJE

http://youtu.be/iOeZLJZoNj0

http://youtu.be/7WHcEaCv1ns

Check also

https://www.mediafire.com/folder/ie8w4gttn8jij/%23_%23_-_CARVER


André
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« Last Edit: September 21, 2022, 1335 UTC by CoolAM Radio »
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Offline IQ_imbalance

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Re: Tour of AM Stereo Station KYET
« Reply #11 on: September 19, 2022, 2241 UTC »
Chris, have you picked up this guy yet?
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Offline CoolAM Radio

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Re: Tour of AM Stereo Station KYET
« Reply #12 on: September 21, 2022, 1337 UTC »
Check also

https://www.mediafire.com/folder/ie8w4gttn8jij/%23_%23_-_CARVER


André
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Offline Molvania Poacher

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Re: Tour of AM Stereo Station KYET
« Reply #13 on: October 01, 2022, 0119 UTC »
One QSL letter every two to three years...wow! Thanks for sharing this video.

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Offline Charlie_Dont_Surf

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Re: Tour of AM Stereo Station KYET
« Reply #14 on: October 08, 2022, 0642 UTC »
Quote from: redhat on September 10, 2022, 2317 UTC
There isn't a lot of CMOS in those cards.  Most of it was MC series stuff from the 80's, the rest being discrete TTL stuff.

+-RH

Which can all get zapped.
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