Fail Safes – What and Why

The Importance of Fail Safes

We discussed last week how the 900mhz backup feature is a highly recommended, under utilized feature, but we also want to talk about another feature that gets overlooked. With Jeti, as with most systems, you have the ability to set up a fail safe on your receiver. Fail Safe is a feature that tells your aircraft what to do in the case of a communication loss. This is important, because a communication loss can be catastrophic and cause an aircraft to do unexpected things. When you lose control of your aircraft, people can get hurt, and all of us want to avoid that scenario. To prevent such a series of events, you can set up a fail safe to carry out a specific task, like turning off your motor, in case of a communication loss. While this seems like a natural thing to do, many pilots are so excited to get a new model finished, this step is often overlooked. It can be the difference between a minor scare and a really bad day. Don’t forget to test the failsafe before you get to the field as you want to make sure it is functioning before you need it.

Check out this video on how to set up your fail safe.

Benefits to Jeti’s 900MHz Backup

An Under-Utilized Gem

With so much flexibility in how to use your Jeti products, it is very easy to miss some really important features. One feature that we often see go under-utilized is the use of the 900 MHz backup on the transmitters.

The Jeti Duplex system is a highly reliable system of transmitters and receivers that send and receive data through the use of radio signals at a frequency of 2.4GHz. Due to the fact that the 2.4GHz frequency offers a decent way to transmit data long range, more and more devices now operate on 2.4GHz. Here is a brief list, just to give you an idea:

  • Cordless phones (yes, these do still exist)
  • Baby monitors
  • Wi-Fi networks
  • Bluetooth devices
  • Garage openers
  • Car alarms
  • Microwaves

With all of those devices around you running on the same frequency it is very possible to face some issues beyond your control. Now, Jeti designed their products with many in fail-safes in mind; telemetry options to analyze signal strength and quality, dual antennas on our receivers to help with shielding issues, and even receiver redundancy in case of failure. These are all amazing features, and have helped save many aircraft, but where it doesn’t help is in the case radio frequency interference. That is where running the 900MHz backup comes into play.

With the use of dual frequency, if there is an issue in the 2.4GHz signal, the back up 900MHz will pick up and transmit necessary data – resulting in you, the pilot, maintaining control of your aircraft. We cannot stress enough how helpful this feature is. Utilizing the 900MHz backup can absolutely save your aircraft, and we feel that no matter how big or small, no airplane deserves to crash! Keep in mind, this is only a back-up, and typical use will be on the 2.4GHz frequency.

Jeti offers two different 900 MHz receivers, but each one has a very specific use. The R3 REX 900MHz is used for the DC-24 and DS-24 transmitters. The DS-12, DS-14 G2, and DS-16 G2 all utilize the “Next Gen” 900MHz receivers – the 900NG.

Check out our entire line of Jeti receivers here.

Author Unknown. “List of 2.4 GHz Radio Use.” Scholarly Community Encyclopedia. (2023). Retrieved from URL (May, 2023).
Gizmodo. “Why Everything Wireless is 2.4 GHz.” Wired. (September, 2010). Retrieved from URL (May, 2023).

Kasi’s Flight Log

Entry: Day One

I have worked in the hobby for a good percentage of the last fifteen years, yet I have never actually learned to fly. I think now is the time. We dusted off an old DJI Flame Wheel from the shop and set it up for me to learn on. Last month we shared a video of my first flight, but being the one who manages the blogs and social media pages I thought it would be cool to keep a “Flight Log” and share it here for you (our readers) to follow along with me as I learn. This is my first entry covering my first flight from a few weeks ago.

03/23/2023: Day 1 – James has taken on the seemingly impossible task of teaching me to fly! I was excited to learn, but very nervous that I would crash. Today, I did well. I flew a DJI Flame Wheel, fitted with Jeti REX 7 Assist receiver and a Jeti SBEC. Thank goodness for the REX Assist receiver – it offers a mode that allows James to adjust the reactivity of the quadcopter. This allows me to get a better handle on how to move the sticks to achieve a certain reaction (with a little latency in between 🙂 ) So far, the Jeti DS-12 has been easy to use, but James has already programed everything. All I need to do is turn on the transmitter and make sure the correct model is selected. I worked on turning the Flame Wheel on by holding the sticks off center. Once it was on, I practiced getting the throttle to the right level for it to take off. The goal today was to hover it around waist high – and I did it! I did get scared if it veered away, and there was once when I lost orientation, but overall it was a great first run! Oh, and I didn’t crash!

Congratulations Are In Order!

Martin Awarded as Best Aviation Athlete!

Jeti USA wants to congratulate Jeti Model pilot Martin Popovský for taking home an award for Best Czech Aviation Athlete – Junior. Congratulations on your achievement!

Jeti Model Facebook Post

*** Photo Credit – Jeti Model (Facebook)

Harness the Power

MUI Installation Tips from the Pros

If you are setting up your aircraft for the first time, or adding to an existing set up, installing a Jeti current/voltage/capacity telemetry sensor (MUI) can look like a difficult process, but it doesn’t have to be!

Typically, when installing a MUI sensor, you would splice into and solder together the red (positive) lead on your electronic speed controller (ESC) to the lead on the MUI sensor. Then you would solder your connectors and connect to your battery as usual. This is often difficult to complete due to the limited length on the ESC leads.

We have a solution – instead of splicing into your ESC leads, simply create a harness. With a set of your favorite connectors, a length of wire in the proper gauge, and your MUI sensor, you can quickly create a harness that is simple to install.

If you take a look at the diagram posted below, you will see that we soldered connectors onto the MUI sensor. The second step was taking another piece of a similar gauge wire, soldering this into the negative side of the connectors, and making an extension. Now we can connect the MUI sensor in between our ESC and battery without any issues!

Get yours here!

MUI Harness Diagram

A New Era of ESC

Mezon EVO – Jeti ESC’s Like Never Before

The Mezon EVO series speed controllers are sure to impress. Like their predecessor (the Mezon Pro), the Mezon EVOs offer complete telemetry capabilities with the added convenience of EX Bus full system integration – all which are completely programmable through device explorer on your transmitter. However, unlike the Mezon Pro, the EVO series offers multi-application capabilities. You now have the option to choose applications for planes, gliders, acro planes, f3A planes, helicopters, cars, or boats. In addition, the setup wizard in the Jeti transmitter allows for a quicker and more intuitive setup of the controller. If you do not run Jeti, you can still take full advantage of the Mezon EVO, simply use Jeti Studio on your computer to complete setup.

Each Mezon EVO, with exception of the slim version, offer a well fitted heatsink to aid in effective cooling during product use. No matter which size you choose, the Mezon EVO series brushless speed controllers are the right choice for any of your next projects.


  • Device Explorer/EX Bus system integration using DS/DC line of Jeti transmitters
  • Suitable for wide range of applications (Heli/Aerobatic/3D/EDF/Boat/Car)
  • Real-time telemetry with full data logging and remote data reset
  • Wirelessly adjustable BEC voltage output (5V – 8.4V)
  • Wirelessly adjustable motor brake, timing, switching frequency and much more
  • Wirelessly adjustable Min/Max limits, cut-off voltage & protection settings
  • All Mezon EVO ESCs are firmware updatable (Jeti Studio)

Here is a great video from Jeti user Harry Curzon on Mezon EVO set up.

Upgraded Hinges on our OV-10 Bronco

In It For The Long Hall (OV-10 Bronco Build)

OV-10 Bronco

Another one of our goals when building our aircraft is to keep the quality up for as long as possible. For this reason, we chose to upgrade the hinges to aluminum hinges. Being made out of a metal, such as aluminum, verses Kevlar fabric (CA Hinges) or nylon, will increase the longevity of the hinges when under repeated stress. The added bonus is how nice they look!

Explore Hinges