Flair Products are announcing that the new Multiplex transmitters are currently in stock, including the IPD dual conversion variants shown here. As briefly described in the modelling press, these transmitters sound particularly interesting, so I've picked the following additional information off the web for you.

The IPD system - what is it?
IPD stands for Intelligent Pulse Coding, and the receiver incorporates a processor which analyses the incoming signal for validity. Like a PCM system, IPD filters out invalid signals. The difference between IPD and PCM is that the receiver does not "switch off" the "dirty" signal as field strength declines, but instead widens its tolerance. This means that control becomes less precise as field strength falls away, but remains usable for longer (greater range). The result is that you can infer the approaching limit of range from the model's behaviour, whereas PCM suddenly robs you of control. When the signal is insufficient for the receiver to interpret, a fail safe condition is actioned, thereby driving the servos to pre-selected safe positions, e.g., throttle back.

An IPD receiver sees all usual PPM formats as valid, which means that all standard FM PPM transmitters can be operated in conjunction with these receivers on the appropriate frequency. IPD is faster than PCM because there are no check cycles.

Practical testing has shown that IPD and PCM produce comparable results when interference occurs. But we are warned not to get complacent. Like PCM, IPD is not an excuse for incompetent R/C installation and careless cable deployment, and thorough suppression of electric motors and ignition systems is still essential.

As fast as PPM Compatible with other PPM transmitters Detects invalid signals No servo jitter with transmitter switched off Hold function (for bad signals up to 0·5 seconds) Fail safe function (for bad signals greater than 0·5 seconds) No servo travel beyond set limit values

Plug options
Check the plug options for these receivers. They can be Multiplex (MPX) standard or Universal (Uni) for compatability with Futaba and JR systems.

Programming cable for IPD receivers
This cable is required to store the fail-safe positions in IPD receivers.
1. Connect the cable to the receiver diagnostic socket.
2. Set the servos to the required fail-safe positions from the transmitter.
3.Press the button once briefly to store the fail-safe positions. That's it!

The recommended retail price for the dual conversion mini receiver is £69.95. IPD  single conversion micro receivers are also available.

For more information on these receivers contact Flair Products via their website at
http://www.flairproducts.co.uk
and please tell them you read about them here on ModelFlight!