Tag: Radio

  • How to Set Up ImmersionRC Ghost GPS Telemetry for FPV

    How to Set Up ImmersionRC Ghost GPS Telemetry for FPV

    ImmersionRC Ghost 2.4GHz long-range LoRa based radio system was announced a year ago and is available on the market for only a little shorter. In this time, ImmersionRC put quite an of effort into making it better, but for unknown reasons always ignored one very important aspect of a long-range radio control link: telemetry!

  • QmuBeacon – ESP32 and LoRa based GPS recovery beacon and locator

    Having a broken leg, limited mobility, and paid sick leave have some perks after all. I’ve finally found some free time to sit on the project I started, I think, two years ago: ESP32, LoRa based GPS beacon, and locator. You know, put it on an airplane and have a way to get the distance…

  • FlySky FRM302 & FTR16S AFHDS3 – The Ultimate 2.4GHz Long-Range Radio System

    FlySky FRM302 & FTR16S AFHDS3 – The Ultimate 2.4GHz Long-Range Radio System

    ImmersionRC Ghost is the new long-range 2.4GHz radio system that is getting the most traction in the media in the last few days. However, IRC Ghost is not the first 2.4GHz SX1280/SX1281 LoRa based radio system that has hit the market. FlySky FRM302 TX module and FlySky FTR16S AFHDS3 receiver are available since May 2020,…

  • The best RC radio transmitters for Q2 2020

    The best RC radio transmitters for Q2 2020

    The last year was a good year in terms of new radio transmitters. It’s no longer a choice between FlySky and FrSky. We have new players and new products. Below is my, very subjective, overview of the most interesting radios on the market. Still the best – FrSky X10S Horus In my very personal opinion,…

  • FrSky R-XSR pinout

  • How to make 868MHz or 915MHz dipole antennas for FrSky R9 or TBS Crossfire receivers

    How to make 868MHz or 915MHz dipole antennas for FrSky R9 or TBS Crossfire receivers

    The correct length of 868/915MHz antennas used by FrSky R9 and TBS Crossfire is: From time to time FrSky has a big problem with cutting their antennas to a correct length. Good thing, you can make your own TBS Crossfire RX antennas for cheap! In this tutorial, you’ll learn how to build your very own…

  • LoRa versus FSK modulation signal spectrum

    LoRa versus FSK modulation signal spectrum

    LoRa modulation is a wireless communication technique designed for long-range, low-power data transmission. It is based on Chirp Spread Spectrum (CSS) modulation, which spreads the signal over a wide frequency range, making it robust against interference and noise. This technology is particularly useful for Internet of Things (IoT) applications, where devices need to communicate over…

  • Testing 868MHz LoRa range, part 1: urban area

    With a (more less) free evening I decided to finally start testing range of 868MHz LoRa E45-TTL-100 radio modules I described only yesterday. Instead of building new testing rig, I only upgraded testing setup I used to test range of FS1000A and XY-MK-5V 433MHz radio modules. Few hours later I came up with this: I’ve…

  • E45-TTL-100 868MHz LoRa wireless modules

    E45-TTL-100 868MHz LoRa wireless modules

    My quest for ultimate (?) DIY telemetry system for UAVs continues. Last year I was playing with HC-12 433MHz wireless modules with pretty decent results. After all, more than 1km of range for a few bucks is more than acceptable. Still, HC-12 has at least few problems: