[BC] Why you wanted to be an engineer...
RichardBJohnson at comcast.net
RichardBJohnson at comcast.net
Wed Oct 24 07:00:23 CDT 2007
Most of the tower tuning equipment will sing a bit, at least with rock-en-roll!
At WARE, a directional station, my first radio job, I got some speaker cabinets
and installed cheap Oaktron speakers into them. I made a loop antenna
around the inside of the box and connected it in series with a 1N2004
rectifier and the speaker. Now I had "high fidelity" audio in every tuning
house. Originally I used 1N34 diodes, but they would burn out.
The speakers did not change the phase, magnitude, nor common-point
current. Also the pattern measurements remained stable.
--
Cheers,
Richard B. Johnson
Read about my book
http://www.LymanSchool.org
-------------- Original message ----------------------
From: "Stevan A. White" <w5saw at pathwayz.com>
> nakayle at gmail.com wrote:
> > Reminds me how you can draw an arc off a hot AM tower with a
> > screwdriver and hear the music in it.
> Or a shovel if you really want to hear something! I had a crew doing
> some work and a backhoe digging next to the reference tower of a 5 tower
> array and the operator wasn't paying attention very well and swung the
> bucket up and knocked the Johnny balls together and shorted out the
> world. I was in the transmitter building and saw the VSWR light come on
> the front panel of the ND-10 so I went out to investigate. I found
> everyone standing around scratching their heads and picking their noses
> asking if it hurt anything and what should be done to "fix it." I found
> a shovel and reached up to separate the balls and pulled a small
> lightning bolt off the base of the tower. You could hear the program
> audio, a lot of crackling, and a lot of "wow, cool man" type comments.
>
> Steve White, W5SAW
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