Will FMA receiver(s) work with my o.e.m. transmitter?
With rare exceptions, FMA Direct receivers are available to be compatible with any transmitter manufactured over the past 25 or so years. The specific exceptions are one each model transmitter manufactured by Futaba, Airtronics, and JR when they first introduced the so-called PCM encoding format in the early 1980s. Those three transmitters can not be switched to PPM. You must confirm that your PCM transmitter has the capability to be switched or programmed for PPM encoding. The FMA Model 202AM is about the only AM receiver available on airplane frequencies. The FCC requires transmitters at 72 MHz and 75 MHz to be within approximately 1500 Hz of the specified frequency. We often find brand new transmitters that are off by 1500 Hz or more. The original equipment receiver works with that transmitter, although not in optimum fashion. However, it generally works because it is has a relatively broad band pass and doesn’t see the difference in frequency. Of course, that means it is more susce
