Is it true that using Spektrum will prevent the problems I'm having with interference
caused from electric motors and speed controllers in my model?
In many instances, yes it will. The radio interference caused by noisy motors, speed controllers,
metal rubbing metal, noisy bearings, etc, generates all its interfering noise below 300MHz-right
where we've been operating our 72 and 75mHz models. The Spektrum system operates at
2.4GHz, that's 2400mHz and is well above the frequency that model generated noise is on, so the
Spektrum system is unaffected.
Air Module Systems: What radios are the Spektrum Air Modules compatible with?
Three Spektrum Aircraft Modules are available. The JR Module will fit popular JR module-based
aircraft radios including the XP8103, XP9303, 10X, 347, 388, PCM10, PCM10S, PCM10SX and
the PCM10SXII. Spektrum´s Futaba Compatible Modules fit all versions of the Futaba 7, 9C and
9Z. Spektrum´s MZ Compatible Modules are designed to fit the Futaba 12 and 14MZ radios.
Why do I only get 9 channels with JR and 8 Channels with the Futaba Compatible Modules
when the transmitter I´m using has 10, 12 or 14 channels?
Spektrum Air Modules operate by utilizing the PPM stream output from the transmitter. It´s
necessary to place the transmitter in PPM modulation prior to operating the module system. JR´s
9– and 10–channel transmitters output 9 channels in PPM mode while Futaba´s 9, 12 and 14
channel radios output 8 channels in PPM mode.
This is new technology. How can I be assured that the Module System will provide a solid
interference-free RF link with plenty of range?
Actually the RF technology is identical to the technology that is used in Spektrum´s DX7. There
are currently thousands of Spektrum DX7 systems in operation with tens of thousands of
successful flights in all types of aircraft—the technology is well proven. In fact, our Technical
Director John Adams has been specifically testing the Module Systems for over two years, plus
we´ve had several Module Systems in the hand of testers for months prior to release.
What is the purpose of the AR9000´s Data Port?
An optional device called a Flight Log (SPM9540) is available and plugs into this data port. After
a flight and before the receiver is powered off, the Flight Log displays RF link performance of the
previous flight. Parameters displayed include the number of bit losses of each remote receiver, the
number of frame losses (simultaneous bit losses on all receivers) and holds. In addition to this
information, the main receiver battery voltage will be displayed. The Flight Log is an important
tool that allows you to confirm that your system and installation is optimized and working
perfectly.
Will Model Match work with the Module System?
No. Model Match is a patented feature that prevents a model from being operated using the
wrong model memory. Model Match can only be integrated into a dedicated Spektrum transmitter
such as the Spektrum DX7. The programming necessary to make Model Match functional must
be embedded into the transmitter´s programming.
I hear a lot about latency and response time. Supposedly the DX7 is faster than any 72MHz
systems. Is the Module System as fast as the DX7?
The DX7 is a purpose-built 2.4GHz spread spectrum radio. With the DX7, the stick inputs are
directly converted to digital code bypassing the PPM stream. This is the primary reason the DX7
is so fast and responsive. The module system needs to utilize the transmitter´s PPM stream and
converts it to the appropriate digital code. Because of this extra processing step, the module
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