DopplerFXTM Accessory Board

This revolutionary accessory for our ShockWave 3 sound system provides enhanced Doppler Shift effects. In conjunction with the ShockWave 3 sound module, the DopplerFX board can make a model airplane sound as though it is going as fast as Mach 0.5 (385.26mph or 616.42km/hr)!.

What's New:

February 20, 2019

New 5th generation ShockWave 3 sound module released. Many new features making it our best yet.

January 12, 2019

New Panzer II Luchs Tank sound set now available bringing our total tank sounds to 12.

January 01, 2019

New de Havilland Venom airplane jet sound set now available bringing our total airplane sounds to 108!

December 21, 2018

New AH-1 Super Cobra helicopter sound set now available bringing our total helicopter sounds to 38!

November 29, 2018

New Sikorsky CH-53E heavy lift helicopter sound set now available bringing our total helicopter sounds to 37!

DopplerFX Accessory Board


Name : DopplerFX
Item Number : DopplerFX
Dimensions : 51mm x 22mm x 4mm
                     (2.0" x 0.87" x 0.16")
Weight : 8 grams (0.3oz)

Included with this board :
1 x 4 wire 270mm long connecting cable,
4 x #4.40 threaded nylon spacers,
4 x #4 pan-head screws

DopplerFX Manual available on-line here

USD$49.99

Expected availability End of March, 2019.
Accepting pre-orders now.

This DopplerFX board is absolutely unique in the R/C world. This innovative device receives input from its on-board GNSS receiver and passes that information to its host ShockWave 3 sound module. The ShockWave 3 sound module then calculates what the Doppler frequency shift should be depending on the model's position relative to its starting point and its speed multiplied by a user settable "Speed Multiplication Factor".

The model will exhibit a mild Doppler frequency shift due to its own motion, but because the model's speed is much slower than the real airplane, this Doppler shift effect is quite mild. Our ShockWave sound module allows the modeller to "dial up" a model speed multiplication factor, up to 7 times either remotely through the radio transmitter, or by using small on-board DIP switches.

This value is then factored into the Doppler frequency shift calculations so that the ShockWave sound module can generate the Doppler frequency shift equivalent to the model flying much faster than it really is. So if your model is flying at 50km/hr it can be made to sound as though it is flying at 350km/hr - Wow! A maximum simulated model speed of 385.26mph (616.42km/hr or Mach 0.5) is possible!

The "start point" or "Observer Position" can be set remotely from the R/C transmitter so that it can be set to near the judges location, for example, in a scale flying competition.

DopplerFXTM is a trade mark of Model Sounds Inc.