Copyright: 1996 - 2024
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
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Something to Cogitate Upon re Jammers - RF Cafe Forums
RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media
platforms dominating public commenting venues. RF Cafe Forums began sometime around
August of 2003 and was quite well-attended for many years. By 2010, Facebook and
Twitter were overwhelmingly dominating online personal interaction, and RF Cafe
Forums activity dropped off precipitously. If the folks at
phpBB would release a version with integrated
sign-in from the major social media platforms, I would resurrect the RF Cafe Forums,
but until then it is probably not worth the effort. Regardless, there are still
lots of great posts in the archive that ware worth looking at.
Below are the old forum threads, including responses to the original posts.
|-- Amateur Radio
Gripes & Humor
-- CAE, CAD, &
Test & Measurement
Post subject: Something to Cogitate Upon re Jammers
Posted: Mon Oct 03, 2005 10:34 am
Sun Aug 03, 2003 2:02 pm
Location: Erie, PA
Here's something that just occurred to me after reading about the
suicide bombings in Bali over the weekend.
Cellphone jammers do not place calls to cellphones - they block
calls. Could it be that the people looking to build jammers, who seem
to be mostly from areas like India, Pakistan, etc., are looking to build
devices to protect themselves in public places? If I lived in an area
prone to such attacks, having a cellphone blocker operating that could
prevent remote detonation calls from being received within a radius
of a few hundred feet would be very appealing. The inconvenience to
everybody else pales in comparison.
Of course, now that I think
about it while writing this post, it is possible that the bad guys want
them to prevent their own devices from going off prematurely while being
delivered to the scene of the crime.
It is a shame that a handful
of terrorists, supported by many large OPEC countries like Saudi Arabia
and Iran, can commandeer such wonderful technologies that are the hard
work of respectable people, and exploit them for harm. I've asked the
question before: Why does the vast majority of the world's population
not band together to utterly destroy the sect that finds it eternally
rewarding to kill innocents? Those people should be utterly afraid to
ever make their intentions known, and be dealt with in an overwhelming
manner when caught perpetrating an act of terrorism.
- Kirt Blattenberger
RF Cafe Progenitor & Webmaster
Post subject: Posted: Tue Oct 04, 2005 9:22 am
Joined: Tue Jan 06, 2004 1:51 pm
Yeah Kurt I
see your point about wanting to protect themselves. I actually thought
the same thing. But I didn't consider your counterpoint about using
the damn things to keep the bombs from going off during the delivery
phase. Maybe you should delete all the jammer posts. Hard to say where
someone's right free speech on the forum is trumphed by my right to
That news about the suicide bomber in OK City is
disturbing, since it was learned that he had Jihad material from the
mosque down the road in his apartment. I got that off the Internet.
CNN never even mentioned it.
Post subject: Posted: Tue Oct 11, 2005 5:54 pm
Joined: Fri Sep 02, 2005 7:25 pm
Location: Hampshire UK
The whole point about using mobile
phones is they are cheap, very available, they can be set off by ringing
the number from anywhere, they hide among all the ligit RF clutter,
and the vibrator or ringer is ready made to mis-apply. It is not the
tool of a suicider!
Of all the methods of spectrum use, is civilian
EW jamming now a kind of street norm? I can take a free speech from
a potential jammer, provided it is just a speech. An act of jamming
is hardly that, and casual jamming/jammer construction is hard to justfy
in any civilised social context.
Hell, the spectrum is jammed
up enough. Why does anyone think they can arrogate to themselves the
right to "jam" anything? Is this a feedthrough from the videogames culture?
Is it "I'm gonna jam your block unless you pay me"? What?
never provide a HowTo for a jammer!