25-Jun-24 - 06:35 PM

Thermal Circle Text - Thermal Circle 29

Written by Hayden Daley - 23 August, 2017.
Thermal Circle Text - Thermal Circle 29

Welcome to this edition of the Thermal Circle. In this edition we will take a look at the new Jeti DC 24 and DS 24 radios and also the Spektrum DX 20. The Jedi lift version of the Jedi F3B is in stock at Model Flight from Baudis and also new in stock is the Pike Dynamic F5J from Samba models and the Euphoria F3J.

Available from:
Available from:

Jeti DC/ DS 24

This revolutionary, digital, 24 Channel, 2.4GHz, frequency hopping, radio system is fully designed and manufactured by Jeti Model in the Czech republic. This is one of the most advanced radio systems on today's market. With their solid CNC aluminum case, a fully integrated antenna, mini USB port, built-in speaker, headset jack, metal transmitter gimbals with Hall sensors (4096 step resolution) and 9 ball bearings for precision movement, large 320x240 full color backlight display and many other features the Jeti DC/DS-24s are sure to become the new standard in transmitter performance

JETI DC-24 Carbon Line is the tray style (European) variant of this world class radio, with black carbon trim features, and includes an R9 EX receiver and an aluminium carry case. The JETI DS 24 was designed with the input of professional model pilots and World Champions in many modelling categories. They have been developed with the aim of providing maximum functionality, comfortable handling as well as maximum durability and reliability of the mechanical parts. The metal case provides maximum protection of the interior components as well as protecting against chemicals and dirt Dual-Band 2.4GHz & 900MHz, triple redundant with five (5) integrated antennas.

  • Dual haptic feedback - Integrated vibration feedback for both gimbals (Stick Shaker).
  • Integrated Microphone - Create custom voice announcements.
  • Voice Commands - Setup voice activated functions or telemetry announcements.
  • Built-In FM Tuner - Integrated, fully functional FM Radio.
  • Brand new, high contrast, full color 320x240 backlight LCD display.
  • State-of-the-art, upgradable firmware which gives you full freedom and complete control.
  • Solid aluminum, CNC cut transmitter case with fully integrated antenna and oversized LCD display.
  • Mini USB port for firmware upgrades and PC download of telemetry data.
  • Integrated speaker and 3.5mm headset jack. You can play back music and create custom voice alarms. Options are virtually unlimited.
  • Built-in, logical switches that lets you program a complex string of control events with the simple flip of a switch.
  • 9-point, programmable curve mixes for all 24 digital proportional channels.
  • You can set up not just dual, but triple rates.
  • Pre-programmed servo setups for nearly every type of wing, tail and swash plate imaginable.
  • Unlimited use of the on-board 8GB SD card memory.
  • Fully integrated logical switch functions. If you need to drop bombs only if your throttle is at 50% and bay doors are open, with this system you can. Your programming/mixing options are virtually unlimited.
  • Fully integrated digital telemetry. View, process and store all your telemetry data and even wirelessly program any of the Duplex EX sensors.
  • Create, manage and program all alarms. Enhance safety for both yourself and your model. Monitor your temperature, speed, battery voltage, receiver battery capacity and much more.
  • All switches and channels are completely moveable and assignable. Want to move throttle to the right slider or switch several functions to just one stick? With the Jeti radio system, yes you can. Basically, you can program any stick, dial, switch or slider to generate any output you choose.
  • Unlimited number of programmable timers. You can easily set a timer for your overall flight time, a model memory timer for the motor run of a specific model, and any number of countdown/stopwatch timers that can be activated any number of ways

Duplex 2.4GHz – for flight control and reception of telemetric data from the model to the transmitter the DC-24 takes advantage of the Duplex 2.4GHz wireless system, which has been developed by the JETI company as well. TheDuplex 2.4GHz data transfer system is very reliable and has been verified during many years. TFT LCD display placed on the top side of the transmitter offers perfect legibility at any lighting condition and a large surveillance angle. Thanks to the high display resolution and application of a relatively big ammount of graphic images it was possible to create a simple and intuitive setting procedure, especially for displaying telemetric data.The DUPLEX EX product family has been equipped with an improved telemetric data transfer system and the subsequent data processing on the LCD transmitter display or analysis on a PC. The transmitter allows setup of acoustical notifications (optionally created by the user himself), which are related to the actual telemetric values or to sound signals assigned to conditions of particular control element

One of the most important features of Jeti's transmitters is the gimbal and switch function assignment flexibility. With the DC/DS-24 you are free to fully customize your radio. You can swap switches or sticks (Mode 1-4) and the on-board computer will recognize your changes and assign functions anywhere you like.

Other important functions are programmable Sounds/Alarms and even user-recordable sounds. This audible alarm feature was specifically designed to keep you informed while also keeping distractions to a minimum. We think this is the best way enhance both your enjoyment and your model safety. You can simply set a receiver battery capacity alarm for the desired capacity used and once that number is reached the system acoustically and visually gives you warning

The DC-24 represents an evolution in the world of top-class RC transmitters. The metal case provides maximum protection of the interior as well as of the outside surfaces against chemicals and the straightforward shapes make servicing easy. Metal quad ball raced stick units with magnetic Hall sensors confirm the revolutionary design concept of this mostly strained element of a RC-System. The Jeti DS/dc 24 is a well designed 24 channel radio. It has features for all types of competition flying and it can be expanded to suit all styles of model flying.

Available from:
Available from:

Spektrum DX20

The all new Spektrum DX20 takes everything great about the DX18 and puts it in a new ergonomic case with superb machined aluminium gimbals and custom leather grips for an awesome feel. The very powerful, but user friendly AirWare software will let you program giant scale models, jets with lots of channels, super complex gliders and any type of multi rotor model with ease. Supplied with an AR9020 DSMX receiver and a high end dual Transmitter Case, this the high end radio you need to get your hands on.

The Spektrum™ AirWare™ software that comes in the DX20 gives expert pilots all the programming features they could want along with a few they never knew they needed. And its intuitive SimpleScroll™ interface makes navigating menus and changing settings as simple as "roll and click." The airplane programming includes a multi-engine control option that, when activated, allows you to independently adjust and control up to four engines or motors. You could use it to make individual run-up checks on the ground or synch propeller speeds in flight. It also makes it possible to use asymmetric thrust to tighten the turning radius of large models during ground operations.

When active, ProTrim will allow you to make small dual rate, expo, mix and differential adjustments in flight. With voice alerts, you can keep tabs on important functions without ever taking your eyes off what you’re flying. They can be programmed to call out what flight mode you’ve chosen or report telemetry information on demand. If an alarm goes off, you won’t have to look at the transmitter display to see what’s happening. The DX20 will tell you. In addition to extensive airplane and heli programming, the DX20 has the most impressive sailplane programming features you'll find in any handheld transmitter.

Ten available flight modes, 5 wing types, 3 tail types, 2 motor types, flap delay with elevator compensation – it has it all. You even have the ability to adjust individual servo characteristics (end points, travel, center, etc.) for all 20 channels. Program a sequence of switch-activated events with time delays between each event. For instance, with a flip of the gear switch you could have an auxiliary channel open landing gear doors, then have the retract channel lower the landing gear, followed by the auxiliary channel closing the gear doors after the gear is extended. No more will you need a complicated network of little boxes littering your fuselage if you want to balance servos. You can precisely balance the output of swashplate servos or multiple servos on a single control surface with the transmitter using a 7-point curve mix.

This exclusive Spetkrum technology gives DX20 users the ability to wirelessly link up with other Spektrum transmitters and specially-equipped Spektrum FPV headsets. Once bound to another transmitter or component, ModelMatch™ technology will allow the DX20 to re-link without having to go through the bind process again. With Wireless Trainer Link, you could:

  • Wirelessly ''buddy box'' with another DSM2®/DSMX® transmitter when teaching someone to fly.
  • Assign gimbal functions to a 2nd ‘camera’ transmitter when flying a camera drone so you can focus on avoiding obstacles and maintaining visual contact while someone else lines up the shot.
  • Link with specially-equipped Spektrum FPV headsets to wirelessly control head tracking and remotely change video frequencies on the fly.

The enormous capacity of the DX20’s on-board memory means you will rarely, if ever, need to juggle models between transmitter memory and your SD card. The model memory menu is easier to navigate too. Only memory slots with model settings saved to them will appear. You won't have to scroll through empty slots or move models around if one is deleted.

Because the DX20 uses the same AirWare™ software as many other Spektrum transmitters, you can share model setups across platforms with almost any Spektrum pilot.Register your DX20 and receive alerts whenever Spektrum Airware software updates are available. You also gain access to a growing library pre-set model setups for the most popular Horizon Hobby aircraft. Both the DX20 and the AR9020 receiver it comes with have X-Plus channel expansion capabilities.This means you can add up to eight extra channels with an X-Plus channel expansion module (SPMXP8000 - sold separately). Just plug the module into the receiver, bind it and then assign the extra channels to any function you want.

Built-in telemetry gives you real-time information on things like your model's battery voltage, signal quality, engine or motor temperature, airspeed, altitude and more. You can have the DX20 recite this information on demand using programmable voice alerts. You also have the option of logging telemetry data to the transmitter’s SD card for review after the flight. To use the telemetry function, your model must be equipped with a Spektrum telemetry module and telemetry sensors (all sold separately). You will find there are Spektrum telemetry sensors for tracking just about any model function you can think of, and new ones are being added all the time. The weight distribution and ergonomics of the DX20 have been optimized to fit the way you fly. The result is a sense of balance and comfort that perfectly complements the speed and precision of DSMX technology

Available from:


Producing a new model that will beat the competition is very difficult, you can be certain that we did it. The new Dynamic is more than you might expect at first sight. Although visually similar to the Perfection the Dynamic is an all new design. Two of the most important qualities of a F5J model are the ability to circle at very low altitudes while in a thermal and to be able to move around the sky with minimal loss in height. The Dynamic excels in both areas, combined with low flying weights and improved controllability in landing we believe the Dynamic is the perfect choice for F5J pilots. The Dynamic was designed using CAD/CAM technology, all parts are completely produced out of carbon fibre.

  • New F5J specific airfoil- Exact camber changes must be made for each Flight Mode, this allows unbelievable range in speed.
  • Thinner Fuselage
  • Increased dihedral on wings tips allows for increased turning performance. Centre joiner can be 3 or 5.3 degrees. Wider flaps for increased landing control and wider ailerons for more precise handling.
  • RTF weight starting at 1100g.
  • Control of flaps and ailerons is available with our LDS system http://www.f3j.com/precision/lds/index.htm or delivered with 2mm GFK control horns
  • Elevator and rudder are produced using machined solid core foam technology with low weights.
The PIKE Dynamic is delivered with pre-bonded pushrod housings in the fuselage, wire harness installed wings and supplied for fuselage, GFK control horns (if customer doesn’t order LDS) for ailerons and flaps, couplers for pushrods in fuselage, and 2mm carbon fibre pushrods. Many pilots want extremely low flying weights but low weight won’t do you any good if you can’t get back to the landing tape. In F5J, competition results are often decided by who can catch a thermal and return from downwind

Available from:

Euphoria F3J

The Euphoria is a magnificent full-carbon thermal glider that features the latest advances in aerodynamic design. It builds upon the strengths of successful gliders to create a model where pilots can grow their skills in F3J and Thermal Soaring class competition. The moulds for the wings and tail surfaces have been created using CNC milling machines to ensure superb accuracy. Furthermore, the four-piece wing section is carbon-skinned for additional strength and stiffness. This four-piece construction allows for larger ailerons to give you great roll control. All the wing control surfaces are large, making camber changes effective. Additionally, the large flaps allow the glider to be spot-landed very slowly and precisely.

This wing design allows for great turn ability and landing control. You will also notice the excellent glide angle and low sink speed. The Euphoria's wing, in addition to its tailplane, are made of spread carbon construction, making the model durable and light. This wing has a large spar, allowing you to perform great aerobatics and strong launches if you so desire. In keeping with current trends, the tailplane has been mounted on a small pylon in front of the fin. The tailplane comes with a separate elevator to give it precise pitch control. The carbon fin features a large film-covered rudder to reduce tail weight.

The pod is made from Kevlar and features a precise snap lock canopy, under which you can easily accommodate a 2.4GHz radio system. This pod is solid, yet lightweight and comes with a carbon fibre tube as a tail boom. The rudder and elevator are also lightweight and are made from CFRP shells. The servo bays can accommodate servos up to 16mm in width for the ailerons. The Euphoria also comes with a ballast tube, allowing you to adjust the weight for windy conditions. The Euphoria has a brilliant finish, with all fittings, locks and joiners coming pre-assembled. All parts slide into place perfectly. The Euphoria comes with pushrods, control horns and linkages.

Available from:

Thats all from the Thermal Circle!!! More Thermal Circle coming soon!!!

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