25 Oct
2000
25 Oct
'00
12:16 p.m.
Picked up an Intel brand Pentium 100, runs OS/2 nicely. Also found a DEC MicroVax II with
2 4-line serial controllers. No drives, but I have a few spares. Time to froray into VMS.
Last Sunday I went to see the Woz speak at the Mac Group of Detroit. Fascinating speaker,
if anyone has the chance to see him I highly reccomend it. He talked in-depth about
working at TI, designing Breakout with Steve Jobs for Atari, and designing his own
computers at the Homebrew Computer Club. Most fascinating factoid: He was inspired to make
his first TV-display terminal when he paid a visit to Captain Crunch and saw that he had a
Teletype in his apartment, and was "Talking to some guys in Boston!" over
Arpanet.
29 Oct
29 Oct
2:40 a.m.
Last Sunday I went to see the Woz speak at the Mac
Group of Detroit. =
Fascinating speaker, if anyone has the chance to see him I highly =
reccomend it. He talked in-depth about working at TI, designing Breakout =
with Steve Jobs for Atari, and designing his own computers at the =
Homebrew Computer Club. Most fascinating factoid: He was inspired to =
make his first TV-display terminal when he paid a visit to Captain =
Crunch and saw that he had a Teletype in his apartment, and was "Talking =
to some guys in Boston!" over Arpanet.
Did he talk about his TV jammer or the first version of Breakout for the
Apple ][? He mentioned them in an interview he did for Call A.P.P.L.E. magazine.
The TV jammer was very small and could easily be concealed. He used it to
train his housemates to adopt wierd poses. He would jam the TV, they would
attempt to fix it, he would unjam it, then he would jam it again later and
make them do something more drastic than the last time. It began with his
housemates hitting the TV, but eventually he had one person sitting on top
of the TV blocking the screen with his legs!
The first version of Breakout was mostly the same as LITTLE BRICK OUT on
the DOS 3.3 System Master disk except for the cheat mode and the insulting
judgement of your score. (The finished program said things like, "YOUR
SCORE IS NOT TOO BAD. KEEP TRYING" but the beta version said, "YOUR SCORE IS
PURE SHIT.")
-- Derek
7:15 p.m.
On Sun, 29 Oct 2000, Derek Peschel wrote:
Did he talk about his TV jammer or the first version
of Breakout for the
TV jammers were fun toys to build! I'm rumored to have used mine on a
few paper-route customers who wouldn't pay me, who expected free
newspaper delivery. :-)
The TV jammer was very small and could easily be
concealed. He used it to
train his housemates to adopt wierd poses. He would jam the TV, they would
attempt to fix it, he would unjam it, then he would jam it again later and
make them do something more drastic than the last time. It began with his
housemates hitting the TV, but eventually he had one person sitting on top
of the TV blocking the screen with his legs!
Didn't everyone build one of these, as well as AM and FM radio
transmitters for their own radio station, as a kid? The circuitry for
a TV jammer is very simple; just requires a few easily made inductors,
an RF transistor, antenna, resistors, caps, variable cap and batteries
(I used two 9V batteries in mine). The whole thing fit on a hand-made
PCB that was about 2" by 2" or less.
--
Copyright (C) 2000 R. D. Davis "The best way to gain a true understanding of
All Rights Reserved Wile E. Coyote on the Roadrunner cartoons is to
rdd(a)perqlogic.com 410-744-4900 fly, head-first, off a horse into something like
http://www.perqlogic.com/rdd a fence or a tree; trust me, this works." --RDD
30 Oct
30 Oct
2:32 p.m.
"R. D. Davis" <rdd(a)smart.net> wrote:
Didn't everyone build one of these, as well as AM and FM radio
transmitters for their own radio station, as a kid? The circuitry for
a TV jammer is very simple; just requires a few easily made inductors,
an RF transistor, antenna, resistors, caps, variable cap and batteries
(I used two 9V batteries in mine). The whole thing fit on a hand-made
PCB that was about 2" by 2" or less.
Hi
I saw an article that showed that one could put
two junction fets together in such a manner that
it made a negative resistance curve like a tunnel
diode. I did this and made a FM jammer. It used:
1 PFET
1 NFET
1 pot
1 coil
1 tuning cap
1 bypass cap
1 battery
I would think that a standard oscillator could be
done with less transistors but it would require more
total parts. I used to hate opera ( still do ). Most
of this was on FM. A few blanked out signals would eventually
cause the person listening to hunt for another channel.
FM goes completely quite when jammed, unlike AM that squeals.
Dwight
5:12 p.m.
Dwight Elvey wrote:
"R. D. Davis" <rdd(a)smart.net> wrote:
It might be added here that I very much enjoy something called ARDF (Amateur
Radio Direction Finding.) The same techniques can be used to find such
devices rather easily :).
Didn't everyone build one of these, as well as AM and FM radio
transmitters for their own radio station, as a kid? The circuitry for
a TV jammer is very simple; just requires a few easily made inductors,
an RF transistor, antenna, resistors, caps, variable cap and batteries
(I used two 9V batteries in mine). The whole thing fit on a hand-made
PCB that was about 2" by 2" or less.
Hi
I saw an article that showed that one could put
two junction fets together in such a manner that
it made a negative resistance curve like a tunnel
diode. I did this and made a FM jammer. It used:
1 PFET
1 NFET
1 pot
1 coil
1 tuning cap
1 bypass cap
1 battery
I would think that a standard oscillator could be
done with less transistors but it would require more
total parts. I used to hate opera ( still do ). Most
of this was on FM. A few blanked out signals would eventually
cause the person listening to hunt for another channel.
FM goes completely quite when jammed, unlike AM that squeals.
5:45 p.m.
Marvin <marvin(a)rain.org> wrote:
It might be added here that I very much enjoy something called ARDF (Amateur
Radio Direction Finding.) The same techniques can be used to find such
devices rather easily :).
Hi
It should also be noted that here in the US, any jamming
of a lawful receiver is considered against federal law.
Dwight
PS
Marvin you'll never find my milliwatts. I keep on the move
and I'm vary careful to check my range. Besides, you can't
really like opera.
8:46 p.m.
I've been lurking for a while, but had to jump in on this one.
I will testify that it is possible to like opera. It happened to me for a while
when I was a kid. It was subtle, but I'm pretty sure I remember correctly that I
liked it. Later I think my class-consciousness screwed up the innocent affection I
had for it. But somehow I thought it was neat that anyone would speak routinely in
song, like they do in opera.
I probably wouldn't go after your milliwatts, unless you did it too close to my
receiver. But I've fantasized about being able to do RDF, especially on weak and
transient signals.
John, KF0NM
Dwight Elvey wrote:
Marvin <marvin(a)rain.org> wrote:
It might be added here that I very much enjoy something called ARDF (Amateur
Radio Direction Finding.) The same techniques can be used to find such
devices rather easily :).
Hi
It should also be noted that here in the US, any jamming
of a lawful receiver is considered against federal law.
Dwight
PS
Marvin you'll never find my milliwatts. I keep on the move
and I'm vary careful to check my range. Besides, you can't
really like opera.
8604
days inactive
8609
days old
6 comments
6 participants
participants (6)
-
dpeschel＠eskimo.com -
elvey＠hal.com -
jbmcb＠hotmail.com -
jtinker＠coin.org -
marvin＠rain.org -
rdd＠smart.net