[Scan-DC] cordless phones

[Steve Rigby]

knowlton wrote:

> A0015/01 - ATTENTION INTERNATIONAL OPERATORS: INTERFERENCE 
> IMPACTING AERO- NAUTICAL AIR TRAFFIC FREQUENCIES CAUSE BY ILLEGAL
>  HIGH POWER CORDLESS TELEPHONES.

   There are many "high power" cordless phones available for sale
that operate outside of the normal commercial aircraft control
frequencies, including phones that are FCC certified for use in the
United States.  I would suspect that any of these could produce
spurious radiation in the frequency ranges that are used by
aviation, perhaps even those approved for use in the United States.
There may even be such phones that are set up to transmit within
the normal commercial aircraft radio frequency ranges although I do
not know of any.

   Certain baby monitors that have been FFC approved, and are thus
perfectly legal to operate, have been found to be causing similar
interference in the aircraft bands.

   Of course, in the eyes of the law, even a certified device that
winds up causing interference, totally unbeknownst to the user, is
considered illegal.  Some of these interferences are probably from
intentional illegal use of these phones, but others may be
unintentional.  Additionally, persons visiting the United States
from abroad, where FCC restriction do not apply, quite likely will
bring these phones with them, and use them here for whatever purposes.

   Steve