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CX2SA > SATDIG 16.04.09 01:41l 295 Lines 8774 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: [amsat-florida] Re: FCC 70cm Proposal (Trevor .)
----------------------------------------------------------------------
Message: 1
Date: Wed, 15 Apr 2009 18:49:23 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] Re: [amsat-florida] Re: FCC 70cm Proposal
To: amsat-bb@xxxxx.xxxx Louis McFadin <w5did@xxx.xxx>, Graham
Shirville <g.shirville@xxxxxxxxxx.xxx>
Cc: amsat-florida@xxxxx.xxx
Message-ID: <978412.16056.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi Graham,
We should bear in mind that in the British Isles and Europe Automobile Key
Fobs, which operate on 433.920 MHz as against the 315 MHz used elsewhere, are
also "Unprotected Devices".
In a number of cases in the UK where people have complained about being unable
to open their Automobiles in the vicinity of licenced 70cm Amateur Radio
Repeaters then the Regulator (Ofcom in UK) has forced the licensed Amateur
repeater to shutdown.
Nevermind the cause of the problem is the Automobile Key Fob receiver. These
typically have wide open front ends that collapse in the presence of strong RF
fields.
For those in North America, repeaters in the UK are individually licensed and
now as a result of Key Fobs using 433.920 MHz anyone wishing to set up a 70cm
repeater has to prove to the regulator that the "Unprotected" Automobile Key
Fobs will not suffer "interference" (overload) from the repeater.
Embedded (implanted) radio devices for medical applications is set to become a
boom industry in the coming years. While the current FCC proposal relate to
one particular application it is inevitable that once granted the frequencies
will in coming years be used for a wide variety of other medical devices.
Irrespective of what may be said now the health care needs of citizens
(voters) will take precedance over Ham Radio operations.
If these devices end up in Ham Radio allocations then we will in time be
forced out.
73 Trevor M5AKA
--- On Wed, 15/4/09, Graham Shirville <g.shirville@xxxxxxxxxx.xxx> wrote:
> From: Graham Shirville <g.shirville@xxxxxxxxxx.xxx>
> Subject: [amsat-bb] Re: [amsat-florida] Re: FCC 70cm Proposal
> To: "Louis McFadin" <w5did@xxx.xxx>
> Cc: amsat-florida@xxxxx.xxxx amsat-bb@xxxxx.xxx
> Date: Wednesday, 15 April, 2009, 5:27 PM
> Hi Lou,
>
> Yes I agree we should never relax!
>
> Thanks for reminding me of the fact:)
>
> 73
>
> Graham
> ----- Original Message -----
> From: "Louis McFadin" <w5did@xxx.xxx>
> To: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
> Cc: "Keith N4ZQ" <n4zq@xxxxxxx.xxx>;
> <amsat-bb@xxxxx.xxx>;
>
> <amsat-florida@xxxxx.xxx>
> Sent: Wednesday, April 15, 2009 4:51 PM
> Subject: Re: [amsat-florida] Re: [amsat-bb] FCC 70cm
> Proposal
>
>
> >I don't believe relaxing is a good idea. Constant
> vigilance by all is? the
> >mantra to have. I am worried about getting sued for
> causing? someone to
> >have some reaction to my 70CM signal I send up to AO51
> or? other satellite
> >or talking to the local repeater. Someone who I
> have? no knowledge of.
> > We should ask them to stay away from the 70 cm ham
> band. 400Mhz is OK? as
> > long as they can accept signals from 420 + without
> harm.
> >
> > I would think something that has health consequences
> would receive a? lot
> > of careful safety analysis before being made
> operational.
> >
> > On Apr 15, 2009, at 4:28 AM, Graham Shirville wrote:
> >
> >> A further check with an expert gives me this
> response:
> >>
> >> "No protection at all - at least in Europe. Short
> Range Devices must? not
> >> cause interference and must suffer any
> interference they receive.? Ofcom
> >> don't like that, but it's in the Short range
> Device Directive. Not? that
> >> Ofcom pay any attention to it if they can avoid
> doing so. Even Part? 95
> >> MICS
> >> devcies in the US get no protection, and that
> applies every where? else,
> >> too."
> >>
> >> so perhaps we can relax?
> >>
> >> cheers
> >>
> >> Graham
> >> ----- Original Message -----
> >> From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
> >> To: "Keith N4ZQ" <n4zq@xxxxxxx.xxx>;
> <amsat-bb@xxxxx.xxx>;
> >> <amsat-florida@xxxxx.xxx>
> >> Sent: Wednesday, April 15, 2009 8:38 AM
> >> Subject: Re: [amsat-bb] FCC 70cm Proposal
> >>
> >>
> >>> Hi All,
> >>>
> >>> From another group I read that the maximum
> power radiated outside? the
> >>> body
> >>> will be around -30 to -40dBm, so not much
> chance of these systems? being
> >>> a
> >>> problem to us.
> >>>
> >>> But of course if they expect "protection" from
> our signals....
> >>>
> >>> 73
> >>>
> >>> Graham
> >>> ----- Original Message -----
> >>> From: "Keith N4ZQ" <n4zq@xxxxxxx.xxx>
> >>> To: <amsat-bb@xxxxx.xxx>;
> <amsat-florida@xxxxx.xxx>
> >>> Sent: Monday, April 13, 2009 11:18 PM
> >>> Subject: [amsat-bb] FCC 70cm Proposal
> >>>
> >>>
> >>>> This is interesting....? N4ZQ
> >>>>
> >>>>
> >>>>
> >>>> FCC Proposes to Allocate 20 MHz of
> Spectrum in 413-456 MHz Band For
> >>>> Implanted Neuromuscular Devices
> >>>>
> >>>> The FCC has released a Notice of Proposed
> Rulemaking (NPRM - ET? Docket
> >>>> 09-36) seeking comment on a proposal to
> allocate 20 MHz of? spectrum in
> >>>> the 413-457 MHz band for use by wireless
> medical devices that? could be
> >>>> implanted into the human body and used to
> restore sensation and
> >>>> mobility to paralyzed limbs and
> organs.? The devices would act as a
> >>>> wireless medical micro-power network (MMN)
> within the patient.???Among
> >>>> the conditions that could be treatable
> using MMNs include polio, ALS
> >>>> (Lou Gehrig's disease), cerebral palsy,
> and spinal cord injuries.
> >>>>
> >>>> The 400 MHz band is targeted because it is
> optimal for RF? propagation
> >>>> through body? tissue.? The
> devices would require at least 5 MHz of
> >>>> bandwidth to function and would operate on
> a low power, secondary? non-
> >>>> interference basis.? Twenty MHz of
> spectrum in four band segments? are
> >>>> proposed so that the device would have
> four options in case one band
> >>>> segment was already in use in a given
> area. The NPRM seeks comment? on
> >>>> the feasibility of four different band
> segments:
> >>>>
> >>>> * 413-419 MHz
> >>>>
> >>>> * 426-432 MHz
> >>>>
> >>>> * 438-444 MHz
> >>>>
> >>>> * 451-457 MHz
> >>>>
> >>>> Comment is also sought on:
> >>>>
> >>>> * Potential for interference between MMNs
> and incumbent users
> >>>>
> >>>> * Service rules (licensed or unlicensed,
> definitions, permissible
> >>>> communications, eligibility, etc.)
> >>>>
> >>>> * Technical rules (power limitations,
> bandwidth, frequency? stability,
> >>>> channelization, antenna locations, etc.)
> >>>>
> >>>> The text of the News Release is available
> at:
> >>>> http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-289482A1.doc
> >>>>
> >>>>
> >>>>
> >>>>
> ____________________________________________________________
> >>>> Learning Centers - Click Here.
> >>>>
http://thirdpartyoffers.netzero.net/TGL2241/fc/BLSrjpYXVv0gKYPqCr8IkCaCq5KAFAR
A3MaWnAKwpstVyhQi63dVmuM3Jz6/
> >>>>
> >>>>
> _______________________________________________
> >>>> Sent via AMSAT-BB@xxxxx.xxx.
> Opinions expressed are those of the
> >>>> author.
> >>>> Not an AMSAT-NA member? Join now to
> support the amateur satellite
> >>>> program!
> >>>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
> >>>
> >>
> >> _______________________________________________
> >> Via the AMSAT-Florida mailing list courtesy of
> AMSAT-NA
> >> AMSAT-Florida@xxxxx.xxx
> >> http://amsat.org/mailman/listinfo/amsat-florida
> >
> >
> >
> > Lou McFadin
> > W5DID
> > w5did@xxx.xxx
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx.
> Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur
> satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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End of AMSAT-BB Digest, Vol 4, Issue 179
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