433Mhz use in Australia. - Page 1
Forum section: electronics / rf-microwave

author: PeterG
author_rank: Frequent Contributor
timestamp: January 29, 2018, 01:12:38 am
content: I have spent some time looking into the rules and regs in Australia regarding the use of the 433Mhz band. It seems Australia does not have a 433Mhz ISM band as such. It does however seem to allow for this band to be used for short bursts using digital communication.The issue i am faced with is this. I have designed a device with both WiFi and an HC-12 module. The HC-12 will be sending about 5 bytes at 1200bps at very long intervals. The signal is used to control a remote relay(Sonoff is not an option). How does this setup stand regarding Australian regs?Hope someone here knows more than i do regarding this question.RegardsPeterG

author: tautech
author_rank: Super Contributor
timestamp: January 29, 2018, 02:02:42 am
content: I looked at much the same thing in NZ. The rules do need some wading through to find the answers but it should all be there. The most likely constraint will be W ERIP that's a product of your transmitter and antenna gain combination.433 MHz is a common telemetry band down under while the US uses 315 MHz.

author: PeterG
author_rank: Frequent Contributor
timestamp: January 29, 2018, 03:17:36 am
content: Thanks for the reply Tautech, looking at the datasheet for HC-12 i doubt it will exceed the 25mW ERIP stated in the regs if i tone down the output power. I am more concerned with working out if there are specific licensing issues to deal with.RegardsPeterG

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: February 23, 2018, 08:33:24 pm
content: 433 MHz in Australia is covered by the ACMA class licence for "Low Interference Protection Devices". Seehttps://www.acma.gov.au/Industry/Spectrum/Radiocomms-licensing/Class-licences/lipd-class-licence-spectrum-acmaI don't think there's an issue with long interval transmissions. In the past FM walkie talkies, where the transmit time is indefinite, have been designed and sold by Australian companies for this band.Here I have some fun with 433 MHz modules and get some quite incredible ranges from themhttp://home.alphalink.com.au/~parkerp/projects/projuhf.htm433 MHz is shared with radio amateurs who use much higher power equipment. That could interfere with typically unselective LIPD receivers. So it shouldn't be used for mission critical applications.

author: mh2000wh
author_rank: Newbie
timestamp: April 27, 2019, 12:12:38 am
content: Dear there,I have run into the same problem. My product is using 433Mhz for smart home control. However, I just realized this band may need a licence or permission to operate. Or even the product have to be certificated. Please let me know the outcome. Thanks!

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 27, 2019, 12:36:11 am
content: if you ask them... they want to own everything...https://transition.fcc.gov/oet/spectrum/table/fcctable.pdf

author: mh2000wh
author_rank: Newbie
timestamp: April 27, 2019, 12:51:34 am
content: And also sharing some reference I found online.1.Short-range spread-spectrum devices fact sheethttps://www.acma.gov.au/Industry/Spectrum/Radiocomms-licensing/Class-licences/shortrange-spreadspectrum-devices-fact-sheetIt only mentioned the following band.915 to 9282400 to 2483.52400 to 2483.55725 to 58502. ISM form WIKIhttps://en.wikipedia.org/wiki/ISM_band433.05 MHz-434.79 MHz only in Region 1, subject to local acceptanceHowever, Australian is in Region 3.3. Spectrum at 434 MHz for low powered deviceshttps://www.acma.gov.au/theACMA/spectrum-at-434-mhz-for-low-powered-devices433Mhz only can up to 25mW but my one is around 50mW

author: mh2000wh
author_rank: Newbie
timestamp: April 27, 2019, 12:53:33 am
content: Quote from: Mechatrommer on April 27, 2019, 12:36:11 amThanks for your help! However, I think it is for US.

author: Lord of nothing
author_rank: Super Contributor
timestamp: April 30, 2019, 05:44:09 pm
content: 430 - 440 is in many Country a Amteur Radio Band. So you can use it with an AFU Licenece?

author: vk6zgo
author_rank: Super Contributor
timestamp: May 07, 2019, 11:42:52 am
content: Quote from: Lord of nothing on April 30, 2019, 05:44:09 pmAs it is in Australia.We had a perfectly good band at 305MHz for car remotes & the like, but big business wanted to import EU style 433MHz units which, due to the existing large market were cheap.Under pressure from various "interest groups", ACMA "rolled over & played dead" & so the so-called Low Interference Potential Device (LIPD) category was born.

author: JoeyG
author_rank: Regular Contributor
timestamp: May 14, 2019, 02:46:26 pm
content: Australian Law - Radiocommunications act lists the Short Range Devices starndard (LPID) See herehttps://www.legislation.gov.au/Details/F2019C00004I saysStandard for performance – short range devices(1) For paragraph 162(1)(a) of the Act, the standard for performance of an applicable device is as set out in AS/NZS 4268,AS / NZS 4268:Feb 2018 is the current standard and it lists 433MHz as one of the available frequencies up to 25mW EIRP.With the performance test derived from EUROPEAN ETSI 300 220.There is no limit max transmission time.** Disclaimer - I offer one persons opinion and customers should do they own due diligence when evaluating government legal requirements **

author: Richard Crowley
author_rank: Super Contributor
timestamp: May 14, 2019, 05:19:47 pm
content: According to international (ITU) regulations, 433 MHz ISM is legal only in Region 1(Europe, Africa, the former Soviet Union, Mongolia, and the Middle East west of the Persian Gulf)Ref:https://en.wikipedia.org/wiki/ISM_band#Frequency_allocationAustralia and New Zealand are in ITU Region 3.Ref:https://en.wikipedia.org/wiki/ITU_Region433 MHz ISM is not legal in Region 2, either (Americas, Greenland, some eastern Pacific islands)

author: Lord of nothing
author_rank: Super Contributor
timestamp: May 14, 2019, 05:37:52 pm
content: When a Country make a Law who legalise it so where is the problem?