Good low-cost sub-gigahertz FSK transmitter and receiver - Page 1
Forum section: electronics / rf-microwave

author: robotix3
author_rank: Regular Contributor
timestamp: March 03, 2017, 05:04:34 pm
content: Can anyone recommend a good low-cost sub-gigahertz FSK transmitter and receiver solution, every time I find one I like I find out that it is obsolete...Preferably one that is well-documented with an easy-to-buy eval board.At this point I only have experience with 2.4ghz setups like the nrf24l01+ but I need something cheaper for a toy design.Thanks for any recommendations

author: daveshah
author_rank: Unknown
timestamp: March 05, 2017, 06:42:16 pm
content: Have you looked at the modules made by HopeRF? They have quite a range of nice sub-gigahertz modules, and would be a good starting point as you could then move onto using just the IC if needed. Another option I've looked at but never used are the ON-semi transceivers; either the AX5043 or the AX8052 series which incorporate both the transceiver and a 8052 MCU.

author: sorenkir
author_rank: Regular Contributor
timestamp: March 06, 2017, 10:09:51 am
content: You can find a lot of cheap nRF905 based boards.Nordic Semiconductor's nRF905 is a single chip 433/868/915MHz GFSK Transceiver easy to drive with a MCU.Michel.

author: 3apw
author_rank: Contributor
timestamp: March 06, 2017, 10:23:02 am
content: You can look atDRA818V - VHF (136-174 MHz)http://www.dorji.com/docs/data/DRA818V.pdfDRA818U - UHF (400-470MHz)http://www.dorji.com/docs/data/DRA818U.pdfBoth versions have 0.5/1W RF TX power.

author: TheDane
author_rank: Regular Contributor
timestamp: March 06, 2017, 09:53:18 pm
content: Texas Instruments makes a chip capable of sub-GHz FSK, and they also have an evaluation board:http://www.ti.com/tool/CC1101EMK433CC1101 - and I'm sure there's a lot more to choose from when you dig into their RF sectionExtremly LOW cost 433MHz modules can be found on aliexpress and ebay. They have a pin header, with SPI interface - great

author: Smokey
author_rank: Super Contributor
timestamp: March 06, 2017, 10:03:41 pm
content: Unless something changed, HopeRF are just Silicon Labs chips on circuit boards. The messed up thing is that they try to remove all references to SiLabs and pass the chips off as their own. 100% copies of SiLabs data sheets with the company name photoshopped over. A little dishonest if you ask me. Other than that, they are good dev boards for SiLabs chips.

author: Simbarashe Bryne Chipembe
author_rank: Contributor
timestamp: May 15, 2019, 08:55:27 am
content: Steer clear of the AXSEM-ONSEMI parts AX8052xxx,Horrendousdocumentation and support. Just extremely impossible to get started with, rather go for Silabs EZR32HG devices or TI's CC1310.It seems as if ONSEMI fired all the smart AXSEM guys, impossible for you to get technical assistance, there is no meaningful documentation, so you'll quickly find yourself in a quagmire.

author: OwO
author_rank: Super Contributor
timestamp: May 15, 2019, 10:17:17 am
content: I've had good experiences with AX5043, which I think is just AX8052 without the MCU. You really do need to read the reference manual carefully and write your own driver for it. Don't bother with the provided code. In the one instance where something was undocumented (BPSK mode) I emailed ONSEMI and got a satisfactory reply.

author: JoeyG
author_rank: Regular Contributor
timestamp: May 15, 2019, 11:49:51 am
content: A bit new : Microchip SAMR30M18A 900MHz module (mcu+Transmitter and receiver) and50ohm ant connection.https://www.microchip.com/DevelopmentTools/ProductDetails/ac164159https://www.microchip.com/wwwproducts/en/ATSAMR30M18