[amsat-florida] Re: [amsat-bb] FCC 70cm Proposal

Graham Shirville g.shirville at btinternet.com
Wed Apr 15 00:38:46 PDT 2009

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....


----- Original Message ----- 
From: "Keith N4ZQ" <n4zq at netzero.com>
To: <amsat-bb at amsat.org>; <amsat-florida at amsat.org>
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
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