Sam KS2AM
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« on: December 21, 2012, 05:59:33 PM » |
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--- Post No Bills ---
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N8LGU
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« Reply #1 on: December 21, 2012, 06:33:32 PM » |
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Those guys are stupid to the bone.
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"Rock Cave Dave"
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KL7OF
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« Reply #2 on: December 21, 2012, 07:58:32 PM » |
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Clever......Takin hits off that weed as it modulates....
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Steve - K4HX
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« Reply #3 on: December 21, 2012, 08:53:23 PM » |
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The audio is almost too clear.
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN
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« Reply #4 on: December 22, 2012, 12:00:06 AM » |
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If the guy used his nose rather than a dandelion he might even hear it in stereo....  73DG |
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Just pacing the Farady cage...
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Opcom
Patrick J. / KD5OEI
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« Reply #5 on: December 22, 2012, 12:08:08 AM » |
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with cost-cutting in an already impoverished area, those are probably the actual station engineers testing out their new monitoring equipment.
I wonder how many watts.. 10K?
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Radio Candelstein - Flagship Station of the NRK Radio Network.
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W1ATR
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« Reply #6 on: December 22, 2012, 10:43:36 AM » |
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Those must be the engineers. There's no way anybody could get past that high security picket fence.  What is that in the background? Tuning network? Guessing by the sheer size of the surrounding equipment, I would think it's a lot bigger than 10kw. Maybe 50? |
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kb3ouk
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The Voice of Fulton County
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« Reply #7 on: December 22, 2012, 11:28:08 AM » |
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Almost looks like they are feeding the towers with that 5 wire unbalanced line, the kind where the center wire forms the center conductor then the 4 outer wires are like the shield.
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Clarke's Second Law: The only way of discovering the limits of the possible is by venturing a little past them into the impossible
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W3RSW
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Rick & "Roosevelt"
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« Reply #8 on: December 22, 2012, 06:02:03 PM » |
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Fascinating.
Is the ionization of plant out-gassing acting as the diode?
If so what is the sound reproducer? Vibration at the audio rate of the carbonized plant stalk or leaf against the ceramic insulator? Similar to Steve's comment, the audio though frequency restricted is surprisingly clear. A carbon microphone... There you go.
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RICK *W3RSW*
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KB2WIG
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« Reply #9 on: December 22, 2012, 06:26:05 PM » |
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Strange. Being that close and watching these fools would have the "brown note" effect on me.
klc
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What? Me worry?
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W5COA
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« Reply #10 on: December 24, 2012, 04:46:32 PM » |
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I visited a high power (50KW?) AM broadcast station in Houston way back when. The engineers who were showing us around took us into the antenna coupling/matching room, and we heard the station's audio perfectly.
I was looking around for a monitor speaker, and the engineer noticed and said that there was no speaker. He said that they had silver soldered/brazed all the connections to try to cure possible diodes to no avail. They finally assumed that we were all just hearing the rectification in our heads. There was no localization of the audio, and it was the same level in all directions.
I have also seen and heard experiments with "arc audio", and I believe that there are some posted on youtube.
Jim
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN
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« Reply #11 on: December 24, 2012, 04:49:41 PM » |
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Big mica caps in high power RF service can sing.
So will certain big coils.
73DG
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Just pacing the Farady cage...
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Opcom
Patrick J. / KD5OEI
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« Reply #12 on: December 25, 2012, 03:17:29 AM » |
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On a little tour some of us in a radio collectors club were taken to a 5KW TX site, and sort of crowded into the tuning room. The building housed the transmitter in one room, tuning in another, and storage in a third. Audio came from a phone line of some sort. It was all very interesting.
2 walls of the tuning room were lined with coils and capacitors and large wires. The engineer/guide said "don't stand close to that wall and don't touch anything". Several people over the 5 minutes of the guide's educational spiel managed to shift around and were about 1 FT from those coils.
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Radio Candelstein - Flagship Station of the NRK Radio Network.
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Steve - K4HX
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« Reply #13 on: December 25, 2012, 12:12:22 PM » |
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IIRC, there were speaker made that used an arc for the tweeter portion. I have also seen and heard experiments with "arc audio", and I believe that there are some posted on youtube.
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W2NBC
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« Reply #14 on: December 25, 2012, 01:55:28 PM » |
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W3GMS
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« Reply #15 on: December 25, 2012, 05:37:09 PM » |
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IIRC, there were speaker made that used an arc for the tweeter portion. I have also seen and heard experiments with "arc audio", and I believe that there are some posted on youtube.
Steve, They are called Plasma Tweeters and can sound very good. A local student in our area who was attending Villanova University built one as his senior project. http://www.angelfire.com/electronic/cwillis/tweeter.htmlJoe, GMS |
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Simplicity is the Elegance of Design---W3GMS
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W1ATR
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« Reply #16 on: December 26, 2012, 09:47:32 AM » |
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I visited a high power (50KW?) AM broadcast station in Houston way back when. The engineers who were showing us around took us into the antenna coupling/matching room, and we heard the station's audio perfectly.
I was looking around for a monitor speaker, and the engineer noticed and said that there was no speaker. He said that they had silver soldered/brazed all the connections to try to cure possible diodes to no avail. They finally assumed that we were all just hearing the rectification in our heads. There was no localization of the audio, and it was the same level in all directions.
I have also seen and heard experiments with "arc audio", and I believe that there are some posted on youtube.
Jim
Must have been a little odd for the brain to process too. There's millions of years of training there on determining the direction, and distance, that a sound is coming from. That's why animals (and even some humans  ) tilt their heads to get their ears on a different plane, as to find the vertical position so it can be compared to the horizontal position. Fascinating stuff  . |
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ke7trp
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« Reply #17 on: December 26, 2012, 10:30:04 PM » |
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This is my Friend henry. He built a 304 TL modulator and decided to modulate his Tesla coil with it. http://youtu.be/KTZT0ocvOc4 |
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AJ1G
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« Reply #18 on: December 27, 2012, 10:26:24 AM » |
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If that the actual acoustic output of the arc that was then recorded using a mike, pretty awesome, especially the low end, how loud to a listener in the room? |
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Chris, AJ1G
Stonington, CT
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N0BST
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« Reply #19 on: January 01, 2013, 03:08:14 PM » |
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"I would think it's a lot bigger than 10kw. Maybe 50?"
Judging by that base insulator I'd say 100kW+ easily.
Scott Todd
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