Brent Brown wrote:
> On 12 May 2010 at 20:47, ivp wrote:
>   
>>> Is 315 allowed in North America or  Japan?
>>>       
>> At retail level in NZ the modules I've found and used are all 434MHz.
>> Equivalent modules in the US are 315MHz versions. That lead me to
>> believe that there wasn't a 315MHz telemetry allocation in NZ, but
>> now I know differently. So it could be that there's no reason other
>> than simply supply or purchasing habits for NZ stockists to have only
>> 434MHz
>>     
>
> Jinx,
>
> I have an 1999 version of General User Licence for Short Range Devices in my 
> archives, 315MHz wasn't listed back then so perhaps it's a fairly recent addition for 
> NZ. Also noticed the 434MHz band was only 1mW back then. I use some 433.92 
> keyfob remotes in a project and can get a good 40m or so (OOK), not sure what 
> power they put out.
>
> I'm led to beleive the 868MHz common in Europe may not suit as it's usually(?) 
> 868.somethingMHz, whereas our allocation in NZ is only 864 to 868MHz.
>
> Brent.
>
>   
It's 866 to 870 in most of Europe I think. 862 or 864 is top of UHF TV 
band. 872MHz is start of   Flash-OFDM/extended GSM-R/GSM-tetra, there is 
a guard band  either side of the  868MHz  SRD band.

The 433Mhz is  in the middle of  the 70cm Amateur  band. The  868 is  
SRD  only, but  includes  wireless Mics,  Wireless Headphones,  very 
local Walkie Talkies  (some  with  PMR 446  0.5W also ), most Wireless 
supermarket barcode 2 way terminals used by floor staff/Shelf audits / 
warehouse (I have such Wireless laser barcode terminal with 20x4 screen 
and realtime communication to SQL server via multiple 868MHz bases).
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