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Forget Me Not Design Challenge
Blog "Remember me always!" - Part 003
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  • Author Author: COMPACT
  • Date Created: 11 Aug 2014 8:56 PM Date Created
  • Views 761 views
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  • remember_always
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"Remember me always!" - Part 003

COMPACT
COMPACT
11 Aug 2014

image

My EAGLE licence has just arrived and can't wait to put its new features to the test.

 

Things can be harder to do when upside down!

 

In Australia our electromagnetic spectrum management is handled by the Australian Communications and Media Authority (ACMA).

Here is a link to their spectrum chart.

http://www.acma.gov.au/~/media/Spectrum%20Transformation%20and%20Government/Publication/pdf/spectrum_chart2013%20pdf.pdf

 

You will notice that the 315MHz, 868MHz and 902MHz bands used by the EnOcean Energy Harvesting sensors are already allocated FIXED services and therefore can not be used in their current state.

EnOcean Alliance company Nuuon has lodged a submission to the ACMA notifying of its intent to obtain approval.

http://www.acma.gov.au/webwr/_assets/main/lib550052/ifc47_2012-nuuon_australia.pdf

 

At the end of March EnOcean announced a 2.4GHz IEEE 802.15.4 model.

http://www.enocean.com/en/enocean-self-powers-2-4-ghz-radio-with-kinetic-energy/

It has the same form as the PTM 210 switch module thus fits into a standard light switch and is powered by the patented ECO 200 kinetic electromechanical module. Hopefully EnOcean will release accompanying energy harvesting sensors for it.

 

For those who don't know, IEEE 802.15.4 is a standard for LR-WPANs (Low Rate Personal Area Networks) it is the basis of existing technologies such as ZigBee and MiFi and can be used with LoPAN (IPV6 over Low Power Personal Area Networks).

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  • mcb1
    mcb1 over 10 years ago in reply to COMPACT

    Compact

    Nice to see you back in the world of internet.

     

    I've sent you a PM re 315MHz modules.

     

    Mark

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  • COMPACT
    COMPACT over 10 years ago

    I've found the following ACMA document and I believe it implies that 315MHz useable for LIPD devices provided that the maximum power output is less than 10uW.

    http://www.acma.gov.au/webwr/_assets/main/lib311880/lipd_class_licence_2000.pdf


    From the TCM320 datasheet the unit is rated at 7.5dBm (5.62mW) which exceeds this value and I can't see a soft command to attenuate the power output.

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  • mcb1
    mcb1 over 11 years ago in reply to COMPACT

    Compact

    Typical legal 'goobly-de-gook' writing

    On one hand they say you can't and the other they say you can if you meet the other requirements.

    In NZ it must have a 1% duty cycle, so obviously anything that continually transmits is out.

     

    NZ had an issue with the FM band as we already had Radio Telephones using it long before FM radio was around, but otherwise we tend to follow overseas frequency allocations.

    It's strange that Australia has chosen to give it to other uses.

     

    You should be getting contacted by Joyee Chung from element14 (on you company email) to help sort out some modules.

    She had to order mine via Singapore since while legal weren't listed.

     

    Mark

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  • COMPACT
    COMPACT over 11 years ago in reply to mcb1

    Hi Mark,

     

    Here's a link to an AMCA that mentions the prohibited use of 868MHz.

    http://www.acma.gov.au/webwr/_assets/main/lib310037/fs185-compliance_labelling_requirements_low_powered_radcom_transmitters.doc

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  • mcb1
    mcb1 over 11 years ago

    Compact

     

    I have been having some problems, with the NZ supply due to frequencies, and have sorted out getting them (PM me)

    I did find this re SRD (Short Range Devices)

    http://www.acma.gov.au/Industry/Spectrum/Radiocomms-licensing/Class-licences/spectrum-opportunities-for-short-range-devices

    and the obligatory regulations/paperwork

    http://www.acma.gov.au/Industry/Spectrum/Radiocomms-licensing/Class-licences/lipd-class-licence-spectrum-acma

     

    It seems they have ignored the 868 MHz band

     

    Mark

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