20 Jun
2001
20 Jun
'01
10:42 a.m.
Does that qualify as an early form of spread spectrum;-)
--tom
At 06:22 PM 6/20/01 -0400, you wrote:
Actually, we got a special permit to activate a spark
transmitter
[1000 watts, quenched gap Navy WW I unit] several years ago at the AWA
[Antique Wireless Association] annual meeting in Rochester, NY. We were
allowed a 60 sec transmission once an hour for a 12 hour period for
purposes of "historical demonstration".
I'm sure the harmonics [multiple and MANY] played hell with the local
TV and radio reception. Across the parking lot it could be received
anywhere from 400KC [where it was "supposed to be tuned"] .. on up to
about 50MC or so.
Sorry about the O/T post but it's a special interest area for me.
There a 500 watt, 500 cycle War I Navy transmitter sitting behind me in
my office!
Craig
Jim Strickland wrote:
It's my impression the FCC takes a pretty dim view of spark-gap
transmitters. But then I've never been a ham or anything like that.
I don't *do* analog (yet).
No packet hardware... I guess that my old Utica
transciever would be
useless for this. Since we're talking about sending/receiving data in
a classic manner, wouldn't it be neat to use sparc-gap transmitters,
and then never worrying about having to do any form of D/A or A/D
conversion?
--
Jim Strickland
jim(a)DIESPAMMERSCUMcalico.litterbox.com
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