hi.
On Jun 19, 2009, at 7:23 PM, Anthony Carrico wrote:
Paul Flint wrote:
Each station consists of at least two white boxes,
one of which fronts to the RJ-14 and contains isolation
transformers to allow the audio signal to remain balanced.
Then I'd hook the outer
taps up to large pieces of plexiglass that I painstakingly drilled
thousands of holes into, and sprayed with carbon paint. Then I'd
sandwich a very, very, very, very, very thin piece of mylar between
them, and lightly spray it with carbon or soap, and hook it to the
center tap of that transformer, with a very high static voltage in
between.
<snip>
Oh to
be young and foolish again! I'm probably too old to appreciate sound
that good anymore anyhow.
Anthony:
You actually built an electrostatic speaker? How big was this? Door
size? :)
I started on such a project but DNF, so, many Kudos! The dream lives on!
VAGUERS:
Perhaps I'm not paying attention, but, I point out SDR.
http://en.wikipedia.org/wiki/Software-defined_radio
http://en.wikipedia.org/wiki/GNU_Radio
http://gnuradio.org/trac/wiki
http://www.gnu.org/software/gnuradio/doc/exploring-gnuradio.html
http://www.ettus.com/downloads/er_broch_trifold_v5b.pdf
Aside: I used to work FM/AM radio in College, but did not,
emphatically, build any reliable TX/RX rigs except for tinkering with
old Hand-built crystal Carrier Current AM, cantennas, and climbing
the radio tower to change the light-bulb... and of course, running a
Linux server for the station in... the mid 90's.
Also, while we're on the radio topic, any other Amateur Radio
operators lurking around on this list?
Thanks.
have a day.yad
jdpf
kb3dqz
