You could have a lower gain omni as just a sense antenna.

----- Original Message ----- 
From: "John Valenti" <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Wednesday, November 19, 2008 5:20 PM
Subject: Re: [WISPA] TVBD height requirement


> Mike,
>
> Where are you reading this on page 43?
>
> And I've made it farther back in the report...
>
> Is Appendix B (Final Rules) the actual rule?   That doesn't look good,
> see Antenna Requirements on page 101. Not only is the transmit antenna
> limited to 30 meters high, but the receive antenna must be 10 m high.
> Sounds like a single story ranch house is going to need a mast.  That
> won't be popular.
>
> Also, it sounds like a yagi isn't acceptable as a receive antenna:
> "The antenna system shall be capable of receiving signals of protected
> services equally in all directions."  Sounds like an omni to me.
>
> I hope I'm reading this wrong!
> -John
>
>
> On Nov 19, 2008, at 1:48 PM, Mike Hammett wrote:
>
>> There previously was some discussion about a 10 meter antenna height
>> requirement in the TVWS.
>>
>> I'm only on page 43 of the report, but on this page it states that
>> the FCC doesn't see a need for either a height or an outdoor
>> requirement, only a 40 cm distance away from people.  This is to
>> comply with the most restrictive MPE distance required by the
>> frequencies in use.
>>
>> TVWS = TeleVision White Spaces
>> TVBD = TeleVision Band Device
>
>
>
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