Custom Search
Over 10000 Pages Indexed
Your Host
Click here to read about RF CafeKirt

... single-
what an
engineering website
should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse
riding business website -
lots of info

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Job Board

About RF Cafe©

RF Cafe E-Mail

About the Jammers! - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

 Post subject: About the Jammers!
Posted: Thu Oct 13, 2005 12:34 pm 
User avatar

Joined: Fri Sep 02, 2005 7:25 pm
Posts: 47
Location: Hampshire UK
Hi RFCafe Folk

Now that I have had a think about why anyone would want to aquire for free from experts, the complete circuit of an effective mobile GSM jammer, I realise that there are some uses where it would be part of a co-ordinated attack of another kind! (Imagine here I am trying hard not to be posting all sorts of inflammatory keywords via an un-encrypted web input).

Among you guys, we are mostly professionals and other interested folk who can make our own circuit diagrams. Where we do share diagrams, they are usually illustrative circuit snippets when discussing some technical feature or other. I am extremely suspicious of these requests under the guise of being "student projects", miss-spelled and unlikely. Call me prejudiced, but I feel I can almost tell from the context the difference between some evil-doer fishing for an easy way to develop his mischief, and a genuine cultural or language oddity.

Here in the UK, we have over the years become used to living with the permanent threat of tragic mayhem, and it happens too regularly, and so maybe I am being over-sensitive about this. Even so Kurt - I am asking that this type of posting should be considered to be possibly outside the terms of use for this forum.

Thanks for listening


 Post subject:
Posted: Thu Oct 13, 2005 1:27 pm 
User avatar

Joined: Mon Jul 18, 2005 4:31 pm
Posts: 42
Location: Baltimore, MD
Yeah, I'm pretty much in agreement. It is kind of interesting to gauge how many people are looking for such devices, though.

As long as nobody answers their questions, I'm fine. If somebody actually does answer the question, the entire thread should be deleted immediately.

The fact is that operating a jammer for mobile phones (or pretty much anything else) is illegal (in every country)... so it really doesn't matter how nefarious the builder's intentions are.

 Post subject:
Posted: Thu Oct 13, 2005 1:44 pm 
Site Admin
User avatar

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 629
Location: Erie, PA

I suppose the prudent thing to do is to terminate all of the jammer threads. I just went through and locked everything to date, and will take measures to prevent them in the future.

Thanks for the input.

- Kirt Blattenberger :smt024
RF Cafe Progenitor & Webmaster

 Post subject:
Posted: Thu Oct 13, 2005 6:14 pm 
User avatar

Joined: Fri Sep 02, 2005 7:25 pm
Posts: 47
Location: Hampshire UK
Thanks Kurt
BTW - its interesting how whatever you used replaced the word "jammer" with the word "idiot" in all the postings - it still managed to preserve the context :-)

 Post subject:
Posted: Thu Oct 13, 2005 6:17 pm 
User avatar

Joined: Fri Sep 02, 2005 7:25 pm
Posts: 47
Location: Hampshire UK
Well how about that ... let me experiment

type j_ a_ mmer several times below

jammer and jammer and jammer

Hmm.. here we go..

 Post subject:
Posted: Thu Oct 13, 2005 6:19 pm 
User avatar

Joined: Fri Sep 02, 2005 7:25 pm
Posts: 47
Location: Hampshire UK
Pleas forgive. I don't normally post to myself - but I couldn't resist a little try-out.


Posted  11/12/2012
A Disruptive Web Presence

Custom Search
Over 10,000 pages indexed! (none duped or pirated)

Read About RF Cafe
Webmaster: Kirt Blattenberger

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

RF & EE Symbols Word
RF Stencils for Visio

Product & Service Directory
Personally Selected Manufacturers
RF Cafe T-Shirts & Mugs

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel