We make new modem for diy use. Can be use as a transparent UART modem. Board have also USB to UART converter.
433MHz (414-454MHz) 100mW (20dBm) Super Long Distance LoRa Wireless data modem with USB and UART interface.
General:
LoRa LRS series is a low cost, high performance transparent transceiver with operating at 433MHz. It is LoRa/FSK/ GFSK/OOK modulation variety. It features small size, high output power, high sensitivity, long transmission distance and most of the parameters can be set via the command. Receive and send data to automatically switch. U s e generic UART interface. It is easy to realize the wireless data transmission with only providing the UART data. It is flexible for the users to set the UART baud rate, output power, data rate, frequency select, modulation mode select etc parameters. It is your ideal choice for designing wireless data transmission products which can be widely used on wireless data transmission field.
Features:
- Low cost, high performance , high reliability
- LoRa/FSK/GFSK/OOK modulation, 2-way half –duplex communication, strong anti-interfere
- Frequency Hopping Spread Spectrum
- 414-454MHz ISM band，globally license free.
- Maximal output power100mW(20dBm)，output power adjustable between 2-20dBm
- LORA Sensitivity -139dBm
- Supply current for Tx 130mA@20dBm, 35mA@13dBm
- Supply current for Rx 16mA
- Low current sleep mode 2uA
- Standard UART interface and USB interface
- Operation frequency can be configured, acceptable for several modules working in different frequency with no disturbance on each other.
- RF parameters as needed, users can be modulated by software
- Easily use, auto exchange on communication & transceiver
- Communication speed 1.2kbps -115.2kbps，can be modulated through software
- Afford Sleep control signal，user self control work duty cycle
- With LED indication
- Longer transmission distance，over 5Km in open air
- Small size 42x30mm， USB connector and 4 pin connector for UART
- Weight 8 gramm
- SMA antenna connector
- Tuning free
- Accord FCC,ETSI standard
Comments
>What is the difference with a normal 433MHz telemetry solution ??, can you make a comparisson table ?
5Km with 20dBm is nothing: The 5Km path loss at 433MHz is around 100dB (using isotropic antenna's) so with 20dBm transmission power you have -80dBm at the receiver input. I tested my 18$ "3DR radio telemetry..) solution with 0dBm TX power, over 11Km with isotropic antenna's: works perfect (still 20 dB noise margin) as long as you have line of sight and no RF noise from your own PC.
Range more than 5km. You can see I write 5+ km This modem have LoRa modulation. More about this modulation you can read on this page
http://www.semtech.com/images/datasheet/an1200.22.pdf
Because China uses 433, LoRa radios are fantastic its what is in Trappys Crossfire. The modules themselves are cheap and pin compatible with earlier types. I am looking at several different ones as I type. Experimenting with them for other purposes.
Hi @CSG,
I notice that you also have a 868 MHz version, I searched on Canadian documentation on radio frequencies - I think it's the same as in the US - and, unless I am wrong, I do not think it is usable without HAM certification. Perhaps a novice question, but why not use 915 mhz?
Hi @Dan,
I'm sure that it's configurable, so you'd be able to lock it into the 433MHz. Here is AUS it's not part of our ISM band either (Region 3) but we do have a Low Interference Potential Devices which allow for a limited band at 25mW.
I think the ISM band they are referring to is for Region 1 (Europe?). Maybe the globally part should be removed to avoid confusion?
Chris
@Darius,
Saying a component is good for drone use without checking it doesn't interfere is not good but lets think about this for a second - its a low powered 433MHz radio. If I put a new item on one of my rigs I do a few short range, low alt tests before doing anything else. I'm betting most of the people here do the same.
There is currently no requirement for what you are suggesting, pending legislation that is yet to be passed by both houses and not signed into law is likely to end up heavily modified from it's current state. Also note that no system is specified in the text, only that the Administrator has to establish one in 1 year. Lets say it happens with the exact text as it is now, how good is the FAA's track record of this (it will take them 2 to 3 years to get there I predict).
Drone Certified is who's trademark? Where does the text say the AMA does the testing? Why would a company waste valuable resources getting something certified against no set standards for something they don't have to do. Do you think before you type? If you beef is with the legislation take it to people that write the laws, trying to make a point on every post about the implications is counter productive. I'm happy I don't live in the US where we have somewhat sensible RPA rules.
I think I'll now ignore your posts like many others.
There is a narrow ISM band in zone 1 around 433/434 MHz (and a few others that Gregory didn't list above), but there is certainly NOT a global ISM band spanning 414-454 MHz, or even any global ISM band in any part of that range. This device is almost certainly illegal to use in the U.S. without a license.
Given this glaring misrepresentation, I would be wary of any of the other claims presented.
@CSG
get full text of the Bill from Senate
testing goes back to AMA ..
so just call AMA and arrange for tests of your data modem installed into drone
Drone Certified (TM) Standard should be applied to every hardware part intended for use with, or installation in a drone.
It makes sense not to install hardware parts not pretested to operate safely with a drone.
"
..
‘‘(4) each operator of a test site under section 44802; ‘‘(5) the Center of Excellence for Unmanned Aircraft Systems; ‘‘(6) unmanned aircraft systems stakeholders; and ‘‘(7) community-based aviation organizations. ‘‘(d) FAA APPROVAL.—Not later than 1 year after the date of enactment of the Federal Aviation Administration Reauthorization Act of 2016, the Administrator of the Federal Aviation Administration shall establish a process for the approval of small unmanned aircraft systems make and models based upon safety standards developed under subsection (a). The consensus safety standards developed under subsection (a) shall allow the Administrator to approve small unmanned aircraft systems for operation within the national airspace system without requiring the type certification process in parts 21 and 23 of the Code of Federal Regulations. ‘‘(e) ELIGIBILITY.—The standards for approval of small unmanned aircraft systems developed under this section shall set eligibility requirements for an airworthiness approval of a small unmanned aircraft system which shall include the following:
"
ISM is
Frequencies listed are in the Amateur Radio 70cm band, so where's the FCC part 15 registration?
looks interesting.
find it in http://www.csgshop.com/product.php?id_product=223
What is the difference with a normal 433MHz telemetry solution ??, can you make a comparisson table ?
5Km with 20dBm is nothing: The 5Km path loss at 433MHz is around 100dB (using isotropic antenna's) so with 20dBm transmission power you have -80dBm at the receiver input. I tested my 18$ "3DR radio telemetry..) solution with 0dBm TX power, over 11Km with isotropic antenna's: works perfect (still 20 dB noise margin) as long as you have line of sight and no RF noise from your own PC.
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