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More on radar detectors, FCC, and interference with gas pumps
- Date: Sat, 18 May 2002 18:46:35 -0400
- To: politech@politechbot.com
- Subject: FC: More on radar detectors, FCC, and interference with gas pumps
- From: Declan McCullagh <declan@well.com>
Previous Politech message:
"Will radar detectors be regulated out of existence?"
http://www.politechbot.com/p-03544.html
---
Cc: geoff_gariepy@hotmail.com, declan@well.com
Date: Fri, 17 May 2002 23:32:17 -0400
From: Alan Dixon <n3hoe@juno.com>
These guys are blowing this out of proportion. The "bottom line" below is
ludicrous. This pending FCC proposal (ET Docket 01-278 [FCC 01-290]) seeks
only to regulate radar detectors manufactured in the future. Existing
detectors would remain exempt from certification. In fact, having radar
detectors certificated in the future could possibly give manufacturers and
consumers some leverage in court when fighting state and local bans on
these devices. Certification would provide clear evidence that such bans
would definitely be contrary to federal objectives. Also, many, though not
all, state-of-the-art radar detectors have substantially reduced IF
emissions to avoid detection by VG-2Ó devices. (At least two alternative
methods are used for this purpose, as well.)
A couple of questions remain. One, it is difficult to believe that a
pay-at-the-pump system can be defeated by a mere open carrier or swept
carrier. These VSAT systems obviously carry modulated data. Additionally,
for these retailers not to use some sort of encrypted key code to
authenticate customers would be really stupid engineering. So would
failing to include any data correction scheme, at least
FEC. Please! Additionally, unless the terrestrial VSAT antenna was
mounted directly over a gas pump in question, the radar detector IF
emissions at issue would likely be well outside of the satellite's beam
aperture. Hence, no interference.
Two, I presume that "direct-to-home" wireless Internet access in the Ka
band are licensed services. If they would turn out to be Part 15 services
though, they would not be permitted to interfere with radar detectors. In
any event, it is unlikely that such transmitters, which are line-of-sight
and above ground level, would interfere with radar detectors any more than
do premise security systems, already. In addition, direct-to-home
transmitters must not interfere with licensed-by-rule police radar (47 CFR
§90.103). Oh.
Incidentally, in FCC nomenclature, an endorsement is a condition of added
privileges on a licensee's authorization. Therefore, I presume that what
we meant to say is that ChevronTexaco Corporation has filed supporting
comments with the FCC on new regulation that would apply to radar detectors.
Radar detectors may well be regulated out of existence? No. Not "may well
be". They will remain alive and well, and future manufacturing will most
likely continue, with minor adjustments.
A new round of FCC regulation on radar detectors? Again, no. Not a whole
"round" of regulation. Clearly, we are looking at a single rule change.
Kind regards,
Alan Dixon
Contributing Editor - Popular Communications
Retired Senior Telecommunications Engineer
Former Member - TIA TR-45 AHAG Standards Committee,
wireless security and encryption
Former Republican candidate for appointment to
the Federal Communications Commission (1996)
<mailto:n3hoe@arrl.net>n3hoe@arrl.net
Above, USA copyright 2002, A. Dixon, Melbourne, FL.
Okay to distribute with this notice included.
---
Date: Fri, 17 May 2002 22:47:22 -0500
To: declan@well.com
From: Doug Bedell <dougb@metronet.com>
Subject: Re: FC: Will radar detectors be regulated out of existence?
In-Reply-To: <5.1.0.14.0.20020516225926.00a4d7a0@mail.well.com>
Declan --
I just wrote a story about radar detectors for the Dallas Morning News.
During my research, I questioned several experts about this very point.
According to them, only Cobra RF emissions were problematic.
Supposedly Cobra models using 12.2 GHz were the only radar detectors
actually doing any interference. According to the people at
radartest.com, Cobra modified its configurations to eliminate the problem,
and everyone's happy.
I'd like to know if that's not the case.
Best wishes,
-=drb
Copyright 2002 Warren Publishing, Inc.
SATELLITE WEEK
February 18, 2002, Monday
SECTION: THIS WEEK'S NEWS
LENGTH: 977 words
HEADLINE: SIA ASKS FCC TO TAKE SWIFT ACTION AGAINST RADAR DETECTORS
BODY:
Satellite Industry Assn. (SIA), in Feb. 13 letter to FCC, asked agency to
"take swift action" to limit harmful interference it said radar detectors
cause to many Very Small Aperture Terminal (VSAT) satellite networks.
Devices are operating in manner inconsistent with FCC rules and are
imposing unacceptable financial burden on VSAT operators, SIA Pres. Richard
Dalbello said: "This situation is intolerable."
Radar detectors are emitting power levels that are greatly in excess of
norms established by FCC for unlicenced devices, SIA said. It said radar
detector in automobile passing by or parked near VSAT terminal or other
satellite earth station could "easily break the satellite communications
link." Many SIA companies have independently identified devices as cause of
interference, Dalbello said. Problem has been around since early 1990s, he
said, but it gradually has gotten worse. Radar detectors have begun to
encroach more seriously on VSAT bands since they changed their operational
frequencies to adapt to changes in police radar guns, he said. (RADAR)
said its members would voluntarily limit radar detector Radio Assn.
Defending Airwave Rights emissions over VSAT receive band at 11.7-12.2 GHz
to Class B levels -- levels Commission has set for most unintentional
radiators. RADAR said limitations would be applicable to units that were
imported or domestically manufactured on or after June 1, 2003, making it
unnecessary for Commission to establish rules to protect VSAT systems.
Attorney Mitchell Lazarus, who represents RADAR, said members are
"unilaterally and voluntarily" committed to complying with Class B levels
"no matter what the FCC does." Once RADAR members are in compliance with
Class B rules, controversy should end, Lazarus said: "We would be putting
no more noise into their band than hundreds of other devices, like PCs or
palm pilots." Radar detectors are unregulated because they're classified as
unintentional radiators and FCC rules exempt receivers that tune only above
960 MHz.
[...]
***********Doug Bedell************
"Seconds ahead when minutes count."
972-857-6460 ... fax 972-857-6461
mailto:dougb@metronet.com
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