If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #65
Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
Most LTE networks use the same bands as the old cell networks. Note too, that the telecoms managed to win commercial usage rights for formally public upper WiFi bands as well. So there's a possibility of running your own LTE base-station, and not necessarily violate FCC rules.
However, interfering with service will have the FCC Fox Hunters (or annoyed ARRL members) after you fairly quickly given the other stations naturally triangulate carrier signal location by default (better than GPS in cities). There is also the constant flow of other users into the broadcast area, and link loss without hand-off would form a fairly good picture of the marked broadcast lobe/circle shadow. Avoid the FCC fines, and remember people have gone to jail for joke devices interfering with user emergency services.
Wideband LTE MIMO multi-polarization naturally handles interference well, and unlike old GSM protocols includes encryption to resist targeted link tampering.
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Site rules:
Part I: Behavior and Conduct
D. Be careful where the law is concerned. Script kiddies, 1337 hax0rz, kewl bomb kidz, etc, begone. This isn't the Jolly Roger's cookbook, or a warez site. Take that kind of stuff somewhere else. Some of what we discuss here may be illegal in certain states, or countries. If you don't think you should be posting it, don't. If you don't know if you should be reading it, don't. You are always responsible for being aware of the laws in your area. This site has a right and a responsibility to defend free speech; we won't censor anyone unless we are forced to. In return, we ask that you defend the site by being aware of your own legal rights and responsibilities.
Reference:
Jamming Cell Phones and GPS Equipment is Against the Law
In recent years, the number of websites offering “cell jammers†or similar devices designed to block communications and create a “quiet zone†in vehicles, schools, theaters, restaurants, and other places has increased substantially. While these devices are marketed under different names, such as signal blockers, GPS jammers, or text stoppers, they have the same purpose. We remind and warn consumers that it is a violation of federal law to use a cell jammer or similar devices that intentionally block, jam, or interfere with authorized radio communications such as cell phones, police radar, GPS, and Wi-Fi. Despite some marketers’ claims, consumers cannot legally use jammers within the United States, nor can retailers lawfully sell them.
News Release: FCC Enforcement Bureau Steps Up Education and Enforcement Efforts Against Cellphone and GPS Jamming. [Word | PDF]
Advisory: Retailers Advised that the Marketing or Sale of Devices Designed to Block, Jam, or Interfere with Authorized Radio Communications Is Strictly Prohibited in the U.S. Enforcement Bureau Takes Action Against the Retail Sale of Jammers. [Word | PDF]
Advisory: CONSUMERS BEWARE: It is Unlawful to Use “Cell Jammers†and Other Equipment that Blocks, Jams, or Interferes with Authorized Radio Communications in the U.S. [Word | PDF]
Downloadable Poster
Bureau/Office: Consumer and Governmental Affairs Updated: Friday, November 20, 2015
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
cell phone jamming
