Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #189549

Re: [OT] Relavant mailing list or USENET group

From John Hasler <jhasler@newsguy.com>
Newsgroups linux.debian.user
Subject Re: [OT] Relavant mailing list or USENET group
Date 2017-12-04 14:50 +0100
Message-ID <uSZia-5v2-13@gated-at.bofh.it> (permalink)
References (4 earlier) <uSBzb-7pb-1@gated-at.bofh.it> <uSCbT-7SD-3@gated-at.bofh.it> <uSOZr-7pA-1@gated-at.bofh.it> <uSQyd-8vp-1@gated-at.bofh.it> <uSSJH-1mK-1@gated-at.bofh.it>
Organization Dancing Horse Hill

Show all headers | View raw

I wrote:
> It has an antenna.  A sharp knife or some conductive tape or adhesive
> and Bob's your uncle.

Stefan writes:
Hmm... I thought the antenna on those devices nowadays are physically
just traces printed on a PCB.

They are.

> They're not necessarily very easy to find AFAIK...

They're pretty obvious (at least to me as an engineer).  Someone who
cared a lot about this issue and had access to lots of phones could put
up a site with photos and drawings.

> and conductive tape probably wouldn't help since the traces are
> coated...

The resist coating is very thin so the tape would be very close to the
foil.  Capacitive coupling at those frequencies would effectively short
all the parts of the antenna together (and all parts of the traces are
not coated with solder resist).  Remember the Apple phones that quit if
you held them wrong?

> tho since it's very high-frequency signals, cutting a trace might be
> like adding an inline capacitance which might not really stop the
> signal

It would stop it.

Better to find the rf chip and cut a power supply pin, though.
-- 
John Hasler 
jhasler@newsguy.com
Elmwood, WI USA

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-02 18:20 +0100
  Re: [OT] Relavant mailing list or USENET group rhkramer@gmail.com - 2017-12-02 19:10 +0100
    Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-02 20:20 +0100
      Re: [OT] Relavant mailing list or USENET group David Wright <deblis@lionunicorn.co.uk> - 2017-12-02 20:40 +0100
        Re: [OT] Relavant mailing list or USENET group John Hasler <jhasler@newsguy.com> - 2017-12-02 21:00 +0100
          Re: [OT] Relavant mailing list or USENET group David Wright <deblis@lionunicorn.co.uk> - 2017-12-02 23:10 +0100
            Re: [OT] Relavant mailing list or USENET group John Hasler <jhasler@newsguy.com> - 2017-12-03 02:20 +0100
              Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 14:10 +0100
          Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 14:00 +0100
            Re: [OT] Relavant mailing list or USENET group The Wanderer <wanderer@fastmail.fm> - 2017-12-03 14:30 +0100
              Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 16:30 +0100
                Back to the question [Re: [OT] Relavant mailing list or USENET group] Richard Owlett <rowlett@cloud85.net> - 2017-12-03 16:50 +0100
                Re: Back to the question [Re: [OT] Relavant mailing list or USENET group] rhkramer@gmail.com - 2017-12-03 17:20 +0100
            Re: [OT] Relavant mailing list or USENET group Tom Furie <tom@furie.org.uk> - 2017-12-03 14:40 +0100
              Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 16:20 +0100
                Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 21:50 +0100
                Re: [OT] Relavant mailing list or USENET group Richard Hector <richard@walnut.gen.nz> - 2017-12-05 04:40 +0100
        Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 13:30 +0100
          Re: [OT] Relavant mailing list or USENET group John Hasler <jhasler@newsguy.com> - 2017-12-03 14:10 +0100
            Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 16:20 +0100
            Re: [OT] Relavant mailing list or USENET group Stefan Monnier <monnier@iro.umontreal.ca> - 2017-12-04 03:50 +0100
              Re: [OT] Relavant mailing list or USENET group John Hasler <jhasler@newsguy.com> - 2017-12-04 05:30 +0100
                Re: [OT] Relavant mailing list or USENET group Stefan Monnier <monnier@iro.umontreal.ca> - 2017-12-04 07:50 +0100
                Re: [OT] Relavant mailing list or USENET group <tomas@tuxteam.de> - 2017-12-04 09:30 +0100
                Re: [OT] Relavant mailing list or USENET group John Hasler <jhasler@newsguy.com> - 2017-12-04 14:50 +0100
      Re: [OT] Relavant mailing list or USENET group Joe <joe@jretrading.com> - 2017-12-02 21:10 +0100
        Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 14:30 +0100
  Re: [OT] Relavant mailing list or USENET group Curt <curty@free.fr> - 2017-12-03 11:10 +0100
    Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 15:20 +0100
  Re: [OT] Relavant mailing list or USENET group Ben Finney <bignose@debian.org> - 2017-12-03 11:20 +0100
    Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-03 15:30 +0100
      Re: [OT] Relavant mailing list or USENET group David Wright <deblis@lionunicorn.co.uk> - 2017-12-04 01:30 +0100
        Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-04 05:00 +0100
          Re: [OT] Relavant mailing list or USENET group The Wanderer <wanderer@fastmail.fm> - 2017-12-04 05:40 +0100
      Re: [OT] Relavant mailing list or USENET group Ben Finney <bignose@debian.org> - 2017-12-04 09:00 +0100
  Re: [OT] Relavant mailing list or USENET group Eric S Fraga <e.fraga@ucl.ac.uk> - 2017-12-04 12:10 +0100
    Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-05 17:30 +0100
      Re: [OT] Relavant mailing list or USENET group Eric S Fraga <e.fraga@ucl.ac.uk> - 2017-12-05 20:10 +0100
        Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-05 22:00 +0100
          Re: [OT] Relavant mailing list or USENET group Eric S Fraga <e.fraga@ucl.ac.uk> - 2017-12-06 07:50 +0100
            Re: [OT] Relavant mailing list or USENET group Dan Purgert <dan@djph.net> - 2017-12-06 12:00 +0100
              Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-06 12:30 +0100
              Re: [OT] Relavant mailing list or USENET group Richard Hector <richard@walnut.gen.nz> - 2017-12-06 12:40 +0100
                Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-06 14:40 +0100
    Re: [OT] Relavant mailing list or USENET group Richard Owlett <rowlett@cloud85.net> - 2017-12-22 18:00 +0100

csiph-web