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

Louis McFadin w5did at mac.com
Wed Apr 15 08:51:48 PDT 2009


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 at btinternet.com>
> To: "Keith N4ZQ" <n4zq at netzero.com>; <amsat-bb at amsat.org>;
> <amsat-florida at amsat.org>
> 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 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
>>>
>>>
>>>
>>> ____________________________________________________________
>>> Learning Centers - Click Here.
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>>>
>>> _______________________________________________
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>>
>
> _______________________________________________
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Lou McFadin
W5DID
w5did at mac.com




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